DEVICE AND METHOD FOR COUNTERING A TARGET WITH CUMULATIVE HIGH-POWER PULSES

Information

  • Patent Application
  • 20250198731
  • Publication Number
    20250198731
  • Date Filed
    December 17, 2024
    7 months ago
  • Date Published
    June 19, 2025
    a month ago
Abstract
A control device which has an input and/or a memory for known pulse properties of a high-power pulse, influx properties and dissipation properties of a target to be assumed, determines a pulse train of the high-power pulses that renders a cumulative influx into the target from the incident high-power pulses greater than a cumulative dissipation due to the dissipation properties, such that an excess accumulation would occurs in the target for disrupting or destroying the target. A control signal representing the pulse train is delivered at the output. An irradiation device contains the control device and the pulse source arrangement for generating the pulse train with the high-power pulses. The control signal is generated with the aid of the control device or the irradiation device and the target is irradiated with the pulse train by the irradiation device.
Description
CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority, under 35 U.S.C. § 119, of German Patent Application DE 10 2023 005 217.5, filed Dec. 18, 2023; the prior application is herewith incorporated by reference in its entirety.


FIELD AND BACKGROUND OF THE INVENTION

The invention relates to the countering of a target with high-power pulses, e.g., HPM (High-Power Microwave) or HPEM (High-Power Electromagnetics) pulses.


European published patent application EP 3 641 056 A1 discloses an HPEM source for HPEM pulses in a desired emission direction: It contains at least three mutually fixed antennas for pulse components, there being at least two groups of antennas having a respective main direction, and a control unit for the activation and phasing of the pulse components for the superposition to form the HPEM pulse. The instantaneous emission direction of the HPEM pulse is selectable in an angular range around the main direction.


Targets can be countered with the aid of the known HPEM source.


SUMMARY OF THE INVENTION

It is an object of the present invention to provide improvements with a view to countering a target.


With the above and other objects in view there is provided, in accordance with the invention, a control device for generating a control signal to drive a pulse source arrangement for generating a pulse train of high-power pulses for irradiating a target,

    • wherein the pulse source arrangement contains at least one pulse source and is configured to generate the pulse train under control by the control signal;
    • wherein each of the pulse sources of the at least one pulse source is configured to generate the high-power pulses, and each of the high-power pulses has respectively known pulse properties;
    • wherein the pulse train of the high-power pulses is established by the control signal;
    • wherein the pulse properties of a respective one of the high-power pulses potentially radiated into the target cause an influx into the target likely to be expected according to an assumed influx property of the target; and
    • wherein each of the influxes is assigned a dissipation likely to be expected in the target due to an assumed dissipation property of the target;
    • the control device comprising:
    • at least one of an input or a memory for the known pulse properties, for the assumed influx properties, and for the assumed dissipation properties;
    • an output for outputting the control signal;
    • the control device being configured to determine the pulse train of the high-power pulses in such a way that, based on the pulse properties and the influx properties, a cumulative influx into the target due to the incident high-power pulses is to be expected, with the cumulative influx being greater than a cumulative dissipation in the target that is to be expected based on the dissipation properties, and to cause an excess accumulation in the target according to which a desired disruption or destruction of the target is to be expected; and
    • the control device being configured to generate the control signal with the pulse train so determined and to deliver the pulse train at the output.


The control device is used, or is configured, to generate and provide, or deliver, a control signal. The control signal is used, or is configured, to drive a pulse source arrangement. The pulse source arrangement is used, or is configured, to generate and radiate a pulse train of high-power pulses. The emission of the pulse train by the pulse source arrangement is used to irradiate a potentially present target. The target is, or is intended to be, countered by the corresponding irradiation of said target.


The invention is based on the following assumptions, or premises:


The pulse source arrangement contains at least one pulse source, in particular a plurality of pulse sources. The pulse source arrangement is configured to generate the pulse train with the aid of the control signal. The control signal thus determines which of the pulse sources of the pulse source arrangement emits when, and optionally also which high-power pulses (nature, shape, power, . . . ). The sum of all high-power pulses emitted according to the control signal forms the pulse train. The driving of the pulse sources takes place according to the control signal, that is to say either by the control signal directly or by signals derived therefrom.


Each of the pulse sources is configured, or is used, to generate respective high-power pulses. A pulse source, or else different pulse sources, may in particular emit different high-power pulses, i.e. pulses of different types here. The pulse sources may be designed here e.g. according to a different nature, capacity and technology. There may thus e.g. be pulse sources in the form of HPM, HPEM, NB (narrowband), WB (wideband) and/or UWB (ultra-wideband) sources inside a pulse source arrangement. Thus, for example, there may be different high-power pulses such as HPM and/or HPEM pulses with different bandwidths (NB, WB, UWB) in a pulse train.


Each of the high-power pulses has—according to one assumption for the control device, or in the control device—known pulse properties. These properties of the pulse are assumed. The pulse properties relate e.g. to pulse type, pulse duration, energy content, profile properties such as edge steepness, etc. In particular, the pulse properties may e.g. be uniformly known for the aforementioned pulse types or else pulse sources. The pulse properties represent assumptions concerning the pulses and therefore apply above all for pulses to be generated in the future.


The pulse train of the high-power pulses is thus established, or to be established, by the control signal. The control signal thus determines which pulses of which type are intended to be generated with which strength and at which instants by which of the pulse sources, and emitted towards the target. The pulse train thus determines the total group, or totality, of the pulses, which is to be generated by a corresponding control signal. In other words, the control signal thus determines the pulse train, or contains a rule as to how the train is to be generated by the pulse source arrangement.


The pulse train is thus used, or is configured, to irradiate the, or a, potentially present target with the high-power pulses. The irradiation of the target leads to an influx of power/energy of each of the pulses into the target, for example into its electronic components, etc. This leads e.g. to an increase in the temperature there or to a current/voltage impulse in a conductor or component, etc.


A respective one of the high-power pulses which are potentially to be radiated, or are radiated, into the target thus imparts in the target an influx (of energy/power/temperature/ . . . ) likely to be expected. For this purpose, an influx property of the target is assumed. This thus describes which repercussions the incident pulse (which has the pulse properties to be assumed) will expectedly or likely cause in the target.


Each of these influxes (of energy/temperature/current/etc.) into the target is assigned a dissipation likely to be expected in the target. This is described by a dissipation property to be assumed in the target. In other words, the influx is absorbed in the target and is then distributed therein so that its action decays/is distributed etc. according to the dissipation properties. This is also an assumption which is made concerning the target.


The control device contains an input and/or a memory for the known pulse properties, or the pulse properties presumed as known, and the influx properties that are to be assumed, or are assumed, and the dissipation properties of the target that are to be assumed or are assumed. The corresponding quantities are therefore available/provided in the control device.


The control device has an output for the control signal, i.e., for providing/delivering the control signal.


The control device is configured, or is used, to ascertain the pulse train of the high-power pulses in the following way: first (for a selected pulse train), a cumulative influx (energy/power/temperature/etc.) into the target due to the incident high-power pulses is ascertained on the basis of the influx properties, which—on the basis of the assumptions of the pulse properties concerning the incident pulses and the influx properties of the target (how it reacts to the respective influx)—is to be expected by assumption for the (underlying) pulse train. On the basis of the dissipation properties, the way in which the corresponding influxes, or the cumulative influx, is/are subjected to dissipation in the target is ascertained. In other words, the cumulative dissipation of the high-power pulses radiated in with the aid of the pulse train is also ascertained. This may, or should, result in an excess accumulation of the influxes, which cannot be neutralized/removed by the dissipation. In other words, the dissipation leads to a “discharge” from the target; the excess remains in the target as the difference of the influx into the target minus the discharge from the target.


The pulse train is then selected (its action in the target is checked thus e.g. iteratively as explained above and the pulse train is optionally adapted/optimized) in such a way that a desired disruption or destruction of the target is to be expected due to the incidence of the pulse train. This is achieved in that the dissipation is not sufficient for all influxes to decay rapidly enough, but rather in that there is a temporal superposition, or additive summation or buildup, of the cumulative influxes in the form of the excess accumulation despite the cumulative dissipation. In other words, the sum of all influxes in the pulse train less the sum of all dissipations that occur results in an excess accumulation of introduced energy/temperature/power/ . . . , by which a desired disruption or destruction effect in the target may be expected in view of the properties of the target, which are likewise assumed as known. In other words, the pulse train is selected with a view to the target to be assumed, with a suitable combination of the high-power pulses, so as to provide a cumulatively increasing superposition of energy/temperature/other influxes which disrupts or destroys the target in the long term, or for the intended purpose.


The control device is furthermore configured to generate the control signal ascertained in this way, which represents the ascertained pulse train, and to deliver/provide it at the output. During the operation of the control device and the driving of a corresponding pulse source arrangement and the emission of the generated pulse train onto the target with the aid of the control signal, it may therefore be assumed that the target is expectedly disrupted or destroyed.


Corresponding assumptions concerning the target and/or the pulse sources/pulses may for example be ascertained by empirical tests, theoretical considerations etc. For example, an exponentially decaying dissipation (1/ex curve) may be assumed. Moreover, the use of electronic and electrical components, lines etc. that are customary according to the state of the art may be assumed. Effects/actions (influx/dissipation) that are initiated by the radiation of a pulse train into corresponding components may be ascertained sufficiently generally and customarily according to the state of the art, for example by EMC studies etc.


The invention is based on the observation that, in practice, HPEM-DS (damped sinusoidal) wideband systems presently operate with a pulse repetition rate in the range from a few tens to a few hundreds of Hz. The energy in an individual HPEM pulse is in this case often not sufficient to be able to produce suitable ranges. Because of the low pulse repetition rate and the corresponding very long time intervals between successive pulses, compared with a pulse duration of a few nanoseconds, the energy dissipation in the target is too high to bring about cumulative effects.


HPEM-UWB source systems, on the other hand, can at present be operated with a high pulse repetition rate up to the high kilohertz range. UWB pulses have typical pulse widths in the range of from a few tens to 100 ps. The energy content of the pulse is therefore relatively low despite enormously high powers producible in the gigawatt range. Further, the power coupled into the target system (target), or the target electronics, or the energy in the relevant sensitive spectral range, is very low because of the very high bandwidth (compared to the peak power of a UWB pulse). In this case as well, because of the energy dissipation in the target electronics, the effective energy/power coupled in is therefore insufficient, despite a higher pulse repetition rate of the UWB system, in order to bring about a cumulative effect of the power, or the energy, coupled into the electronics in such a way that the target electronics or components or systems are temporarily and/or lastingly impaired in their functionality, disrupted or even destroyed.


Targets are in particular electronic target systems and electronics, for example UAV (unmanned aerial vehicles), IED (improvised explosive devices), rockets (missiles), military weapons and reconnaissance systems, communication and command installations and structures, as well as high-value military and civil targets and infrastructures.


The basic concept of the invention is to increase the coupling of energy and power by high-power pulses, in particular HPEM, into such targets with the aim of temporarily and/or lastingly disrupting them in their function and/or destroying the target electronics and therefore bringing about the failure of the target system.


The invention will be explained below in particular with the aid of “HPEM” (high-power electromagnetic) as a representative of all suitable high-power pulses.


It is a further object of the invention to increase the effective range and efficiency of HPEM systems, and to coordinate the action of distributed HPEM systems in order to increase the action efficiency and effective range at the target. To mention an example: defense and protection of own systems and installations in a swarm attack scenario.


According to the invention, in other words, assumptions are made for example concerning transistors or integrated circuits (chips) in a potential target. The influx into the target then takes place “fast enough” to overcompensate for the dissipation effects to be assumed there. The invention is therefore based in particular on the idea of using short pulses, i.e., with a rapid rise time. In this way, almost no propagation of (in particular thermal) energy takes place in the target, and local heating and therefore disruption or destruction takes place in the target. A prerequisite for this is that the next pulse arrives “fast enough” (that is to say the time between the leading edges of the pulses is short enough) not to let the local heating decay, but to further increase it cumulatively per pulse.


With the above and other objects in view there is also provided a (HPEM) method or system in which the action of the high-power pulses is matched temporally with one another with the temporal energy/temperature/power dissipation and/or the behavior/decay of latency effects. The temporal superposition and accumulation of the power or energy coupled in in the target electronics is used to correspondingly accumulate energy. Thus, the disruption or destruction threshold of the electronic components and component parts can be exceeded in order to cause failure and destruction of the electronics, or of the system. Latency effects are in particular charge carrier injection into boundary layers, pn junctions, depletion layers, modification, attenuation or strengthening of electric fields.


The invention therefore provides a method and system for increasing, amplifying, optimizing the coupling of power and energy of high-power pulses into electronic systems. Temporal matching and combination of the high-power pulses, current impulses, voltage impulses, individual impulses, pulse repetition rates and/or pulse sequences radiated and/or coupled in with the energy/temperature dissipation to be expected in the affected electronics, electronic components, electronic component parts, lines and conductor tracks are obtained. This enables local cumulative additive superposition and buildup of the energy influxes and the temperature. These are caused by the respective individual impulses/pulse sequences and pulse repetition rates. With a sufficient number of local impulses and energy influxes, this therefore leads to long-term disruption and/or destruction of the electronic component parts and components. The influxes must be faster than the local energy/temperature dissipation in the respective component part/electronics/pn junction etc.


The method may be used both via conduction and via radiation. The method makes it possible to increase significantly the action efficiency of the high-power pulses/systems and their effective range. The method may be adapted to the requirements of different designs of the target electronics and therefore different speeds of energy/temperature dissipation, due to different system designs. The adaptation takes place by (modified) temporal matching and synchronization of individual or multiple pulses, current pulses, voltage pulses, the number, the length, the pulse amplitude and the pulse repetition rate, pulse sequence and length.


Further, latency effects in electronic component parts may be expediently used by the very rapid (HPEM pulses) repeated voltage/current/field/energy and temperature influx, temporally matched with these effects, into the construction elements, depletion layers etc. This is done since they lead to a short-term temporary attenuation of the switching properties/increase of the internal resistance etc., for example by short-term heating or charge carrier injection into pn junctions, and therefore to a temporal attenuation and change of the characteristic properties of the construction element, of the components or of the electronics. Component part properties are for example modified in pn junctions, boundary layers, depletion layers, field distributions, charge carrier mobility, the temperature behavior, changes in the charge carrier mobility and the field distribution in electronic component parts. By very rapid cumulative energy and/or temperature influx/increase, temporally matched with one another and the energy dissipation in the electronics/component part, and repetition or cumulative amplification of these effects, they ultimately lead to temporary and/or long-term disruption and/or destruction of the corresponding component parts, construction elements, components and systems.


In order to produce the rapid temporally matched pulse train and/or pulse sequences, for example in the nanosecond/picosecond range so as to achieve the desired cumulative effects, it is necessary to have very accurate temporal synchronization and matching of the individual impulses, the impulse order, pulse sequence and/or superpositions thereof in relation to the expectable time profile of the energy/temperature dissipation and/or of the latency effects at the circuit/component part and/or doping level of the target electronics, or of the electronic component parts and components of the target electronics.


Such a method may be implemented with all HPM, HPEM, UWB, WB and NB(-HPEM) source systems. What is essential is the very accurate temporally synchronous accurate matching of the individual pulses incident/acting in the electronics, pulse train, pulse sequences and pulse train sequences, which is matched with the energy/temperature dissipation to be expected and/or the time profile of latency effects in the target electronics/component part. Further, the optimization of the pulse shape, amplitude, rise time, duration, energy and frequency content can have a positive impact on this desired effect.


An increase of the effective range is obtained by exposing the target to impulses, impulse orders and sequences which are matched with the temporal energy and temperature sensitivity as well as the sensitivity of the target electronics in respect of temporal latency effects.


The invention provides the following advantages:


It distributes the required total energy and power over a plurality of individual and/or combined and/or identical and/or else different (HPEM) technologies (NB, WB, UWB etc.), sources, components and systems.


It furthermore generates and provides HPEM/high-voltage/high-current/electromagnetic/high-energy high-power pulses (amplitude, duration, pulse repetition rate, energy, power), pulse trains, pulse sequence and pulse train sequences, pulse repetition rates, temporally matched and/or synchronized with the energy/temperature dissipation/latency effects.


It generates a temporary energy/temperature and latency behavior/effects in the target electronics, electronic component parts, components and systems, in such a way that they temporarily, in the long term, permanently bring about a function disruption or failure and/or destruction of the target electronics and systems.


It matches the pulses (amplitude, duration, pulse repetition rate, energy, power), pulse trains, pulse sequence and pulse train sequences with the specific properties of the temperature and energy dissipation function and latent effects in the target electronics, components, component parts and systems, in order to bring about a (local) additive energy/temperature effect/energy/temperature boost until the disruption/destruction threshold of the component part is exceeded. The method/the device may be used both via conduction and via radiation. With correspondingly short dead times, the use of statistical effects such as jitter may also be employed in order to generate the desired effects.


The invention is particularly suited for use in the following:

    • (A) HPEM systems, stationary or on mobile platforms for various applications (for example counter-UAS as vehicle protection, counter-UAS military camp protection, C-IED etc.)
    • (B) HPEM system, mobile for land applications integrated on a vehicle for self-protection in the scope of NNbS (Close and Immediate Area Protection) and MGCS (Main Ground Combat System) for various applications (for example counter-UAS, C-IED, convoy protection etc.).
    • (C) HPEM system, mobile for air and sea application, integrated on an aircraft, drone or ship for self-protection in the scope of NNbS for various applications (for example counter-UAS, C-IED, BootStop etc.).
    • (D) Distributed HPEM systems with swarm capability for coordinated action for protection or for attack. Integration on mobile and/or airborne platforms (for example FCAS, RC, LW, UAV, UAS, mini-UAS etc.).


There is therefore an application for (HPEM) active systems for self-protection in the field of NNbS, military camp protection, MGCS for the immediate area and FCAS for self-protection, for example counter-UAS, C-IED, convoy protection, protection of military camps, BootStop, protection of ships, aircraft, drones etc. Use for attack with drone swarms against military weapons and reconnaissance systems, communication and command installations and structures, as well as high-value military and civil targets and infrastructures.


The basic principle of the invention provides a method for coupling in HPEM power and increasing range.


(HPEM) pulses/impulses are capable of coupling high energies and powers into lines, electronics, electronic components, and systems. Powerful impulses induce high voltage and current impulses in target electronics. Because of the very short impulses, the powers, voltages, energies coupled in and the local coupling in of energy/voltage increase/boost and/or heating and temporary latency effects (for example charge carrier injection, field boost/attenuation in the semiconductor structure/pn junctions/zones) thereby caused are not strong enough to disrupt and/or destroy the electronic system, component part, components in terms of function temporarily and/or in the long term.


Lines, printed circuit boards, and electronic systems have a certain defined energy dissipation, which depends strongly on the nature of the component parts or components and on the layout or structure (printed circuit boards, multilayer, cooling elements, energy sinks, line thicknesses, line widths, materials etc.).


By matching the chronological succession and number and/or shape of the HPEM impulses with the local decay behavior of the temperature/energy/energy dissipation/recovery from latency effects, the energy is redelivered by the matched chronological succession of the HPEM impulses more rapidly than the local decay of the temperature/energy/latency effects by the specific energy dissipation function.


Because of the temporal synchronization/succession of the coupling in of energy/voltage/current/field/latency events with the local decay/behavior of the energy/temperature and/or latent effects (latencies), an additive local buildup of the energy and/or temperature and/or of latency effects takes place, which, when a disruption or destruction threshold is exceeded, leads to a temporary and/or long-term and/or complete failure up to the extent of destruction of the electronics and their functionality.


A local buildup of the deposited energy/temperature of latency effects takes place by energy influxes, temporally matched with the decay behavior (dissipation function), due to HPEM pulses up to the extent of temporary/long-term disruption and/or destruction of the electronics. Influencing parameters and variables are for example (not exclusively) a time interval between two pulses, for example a current/temperature profile in the target electronics induced by the pulses, a maximum amplitude of an induced current/temperature, a rise and fall time of the current dI/dt, a rise and fall time of the temperature (dT/dt).


According to one preferred embodiment of the invention, the control device is configured to ascertain the pulse train, or the control rule, according to at least one matching rule for the high-power pulses. The matching rule is in particular a temporal (time train of the pulses/time durations etc.) or power rule (pulse power) and may also contain or be a combination rule (how which pulses are to be combined with one another). In other words, the pulses are in particular matched with one another temporally and according to their nature inside the pulse train in order to achieve the aforementioned accumulation effects and to overcome the dissipation.


The preferred embodiments (including those below) have already been explained above together with their advantages.


According to one preferred variant of this embodiment, at least one of the matching rules includes the specification of a pulse repetition rate and/or a pulse number and/or a pulse length and/or a maximum time interval between two of the high-power pulses. In the case of small time intervals needing to be produced, the jitter may also be used in the case of a plurality of sources, as explained above: for example, 3 sources are triggered simultaneously via a trigger signal. Because of a known jitter phenomenon in the trigger signal, the 3 pulses can be emitted distributed over the jitter time period and lead to the desired accumulation.


According to one preferred embodiment, at least one of the matching rules includes the specification of a pulse shape and/or a pulse sequence of high-power pulses. The term “pulse sequence” refers to a succession and/or a combination of pulses, in particular the chronological succession of the pulses.


In one preferred embodiment, at least one of the dissipation properties contains a property to be assumed concerning the behavior of current and/or voltage impulses which are brought about in the target by high-power impulses.


In one preferred embodiment, at least one of the dissipation properties contains a property concerning the behavior to be assumed and/or the decay of latency effects in the target.


In one preferred embodiment, at least one of the dissipation properties relates to an electronic component (or “electronics”) of the target that is to be assumed. This is in particular an electronic component part, a line, a conductor track, a transistor, an integrated circuit (chip) and in particular the respective disruption or destruction thresholds thereof. In particular, it describes the local accumulation of power/energy and temperature.


With the above and other objects in view there is also provided, in accordance with the invention, an irradiation device which is used, or is configured, to irradiate the aforementioned target with the mentioned pulse train of high-power pulses. The irradiation device contains the aforementioned control device. The irradiation device also contains the aforementioned pulse source arrangement, which contains the at least one pulse source and which is driven by the control signal delivered at the output by the control device. The pulse source arrangement is configured to generate the high-power pulses in the form of the pulse train represented by the control signal and to radiate them onto the target (potential, if present). This is a potential target, if present.


The irradiation device and at least some of its possible embodiments, as well as the respective advantages, have already been explained in a corresponding way in connection with the control device according to the invention.


According to one preferred embodiment, at least one of the pulse sources is an HPM or HPEM source and/or a source in the form of an NB, WB or UWB source.


In accordance with a preferred embodiment, the pulse source arrangement contains at least two different pulse sources. High-power pulses may in this way be emitted simultaneously or with a time offset by each of the pulse sources.


In accordance with another preferred embodiment, the pulse source arrangement contains at least two pulse sources in the form of a distributed source system. The two sources are in particular distributed over different platforms; each of the platforms may be stationary (for example a camp) or movable (for example a vehicle, a drone). In particular, it may be a swarm, for example swarm of drones which are equipped with respective pulse sources.


In an alternative embodiment, however, it may also be a concentrated system, for example on a vehicle or a building, in which all pulse sources are installed on the system in question.


With the above and other objects in view there is also provided, in accordance with the invention, a method that is based on the premises explained above; in particular on the pulse source arrangement with the pulse sources, which are capable of generating the high-power pulses according to the rule by the control signal, and on the assumptions concerning the pulse, influx and dissipation properties.


The method and at least some of its possible embodiments, as well as the respective advantages, have already been explained in a corresponding way in connection with the control and irradiation device according to the invention.


The object of the invention is also achieved by a method for irradiating the target explained above with the pulse train of high-power pulses. The aforementioned method for generating and providing, or delivering, the control signal is in this case carried out, and the pulse source arrangement is driven by the latter as explained in order to radiate the high-power pulses towards the target.


The method and at least some of its possible embodiments, as well as the respective advantages, have already been explained in a corresponding way in connection with the method according to the invention for generating the control signal and the control and irradiation device according to the invention.


Other features which are considered as characteristic for the invention are set forth in the appended claims.


Although the invention is illustrated and described herein as embodied in countering a target with cumulative high-power pulses, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.


The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.





BRIEF DESCRIPTION OF THE FIGURES


FIG. 1 is a schematic view of an irradiation arrangement according to the invention for irradiating a target;



FIG. 2 is a graph showing the emission of successive high-power pulses without excess accumulation;



FIG. 3 is a graph showing successive high-power pulses with excess accumulation in order to disrupt the target; and



FIG. 4 is a graph showing successive high-power pulses with excess accumulation in order to destroy the target.





DETAILED DESCRIPTION OF THE INVENTION

Referring now to the figures of the drawing in detail and first, in particular, to FIG. 1 thereof, there is shown an irradiation device 2. The device is used to irradiate a target 4 with a pulse train 6 of, in this case, three high-power pulses 8a, 8b, 8c. This is used for exemplary representation. In practice, dozens or hundreds of high-power pulses are involved. The irradiation device 2 contains a control device, or controller 10, and a pulse source arrangement 12. The pulse source arrangement 12 contains in the example (likewise by way of example) three pulse sources 14a, 14b, 14c. The pulse source arrangement 12 is driven by a control signal 16, which is generated by the controller 10 and delivered, or provided, at an output 18 of the controller 10. The pulse source arrangement 12 generates the high-power pulses 8a-c in the form of the pulse train 6. The pulse train 6 is represented, or defined, or determined by the control signal 16. The pulse source arrangement 12 radiates the high-power pulses 8a-c in the form of the pulse train 6 onto the target 4, that is to say it irradiates the target 4 with the pulse train 6.


The pulse source 14a is an HPEM-UWB source. The pulse source 14b is an HPM source, and the pulse source 14c is an HPEM-NB source. The high-power pulses 8a and 8c are therefore electromagnetic HPEM pulses with UWB and NB characteristics. The high-power pulse 8b is a high-power microwave pulse. The pulse source arrangement 12 thus here contains three different pulse sources 14a-c. The pulse sources 14a-c are designed here as a distributed source system 20, i.e., each pulse source 14a-c is respectively mounted by itself on a respective drone (not represented in the figure). The drones act as a swarm in order to counter the target 4 in coordinated fashion.


According to the pulse train 6, the high-power pulses 8a-c are emitted in a chronological train successively at the instants t1, t2 and t3 and correspondingly arrive at the target 4 with the respective time interval T in between.


The controller 10 is used to generate the control signal 16 in order to drive the pulse source arrangement 12 as explained above to generate the pulse train 6, so that the pulse source arrangement 12 can irradiate, or irradiates, the target 4 with the pulse train 6. The pulse source arrangement 12 thus generates the pulse train 6 with the aid of the control signal 16. The pulse sources 14a-c are used to generate the high-power pulses 8a-c.


In the controller 10, a respective pulse property 22a-c of each of the high-power pulses 8a-c is known beforehand or is correspondingly presumed or assumed. In the example, this is related to the respective pulse type (HPEM-UWB, HPEM-NB, HPM). The pulse property 22a-c thus does not characterize each single individual pulse, but rather the general pulse characteristic of the high-power pulses 8a-c, which are always generated in the same way here. The pulse train 6 is established, or determined, by the control signal 16.


The controller 10 now presumes, or makes the assumption, that a respective one of the high-power pulses 8a-c radiated into the target brings about in the target 4 an influx 24a-c likely to be expected in the form of coupling in power or energy, which is described by a corresponding influx property 26a-c. In other words, energy or power is injected into the target 4, for example an electronic component 28 thereof, by each of the high-power pulses 8a-c, which depends on their respective pulse property 22a-c and the respective influx property 26a-c of the target 4. The corresponding influx property 26a-c is assumed in the controller 10 and thus represents an assumption (in general not exactly known) inside the controller 10.


The controller 10 furthermore presumes that a corresponding influx 24a-c in the target 4 undergoes, or is subjected to, a dissipation 30a-c likely to be expected, which is characterized by corresponding dissipation properties 32a-c of the target 4. In other words, power/temperature/energy that is potentially harmful to the target 4 is introduced by a high-power pulse 8a-c into the target 4 as an influx 24a-c, although this is subjected in the target 4 to a dissipation 30a-c, which opposes the harmful effect.


These described (partial) assumptions (pulse, influx and dissipation properties) are symbolically indicated in FIG. 1 as a (summary) assumption A for the controller 10. This assumption A thus exists in the controller 10, or is used by the latter. The corresponding conditions at the target 4 are therefore symbolically represented once more in FIG. 1 below the controller 10.


The controller 10 therefore contains an input 34 and a memory 36, with which the assumption A is input into the controller 10, specifically in the form of the pulse properties 22a-c, influx properties 26a-c, and dissipation properties 32a-c. The controller 10 is therefore in possession of the corresponding assumption A. These are now used in the controller 10 in the following way:


The controller 10 ascertains the pulse train 6 of the high-power pulses 8a-c iteratively/successively/according to specifications etc. (customary according to the state of the art, not explained in detail here) in such a way that, with knowledge of the pulse properties 22a-c and on the basis of the influx properties 26a-c, a likely cumulative influx 38 into the target 4 can be assumed. The control device in this case takes into account the respective dissipation 30a-c which is likely associated with the influxes 24a-c and is added to a cumulative dissipation 40, which is therefore likewise assumed. The pulse train 6 is now designed/configured, ascertained, optimized so that the cumulative influx 38 exceeds the cumulative dissipation 40, so that an excess accumulation 42 of introduced energy/power/temperature/current/voltage etc. results in the target 4, which leads to a desired disruption or destruction of the target 4 being expected or presumed.


The ascertaining of the pulse train 6 is in particular iteratively adapted, e.g. by varying the number/nature/succession/time interval etc. of the individual pulses, until the desired excess accumulation 42 is obtained. In other words, suitable high-power pulses 8a-c are sought in a suitable chronological succession and combination so that the influxes 24a-c brought about cannot be discharged again “fast enough” from the target 4 by the corresponding dissipations 30a-c in order to prevent the excess accumulation 42.


As soon as the pulse train 6 has been ascertained, the controller 10 delivers the control signal 16 which represents the corresponding pulse train 6, so that the pulse source arrangement 12 is informed with the aid of the control signal 16 to generate precisely that pulse train 6 according to the relevant rule in the control signal 16 and emit it onto the target 4.



FIG. 2 symbolically shows assumptions A concerning the radiation of the respectively individual high-power pulses 8a-c into the target 4 as a function of time t according to a tried-out pulse train 6. A respective current profile 44 and a temperature profile 46, which is assumed in the electronic component 28 of the target 4, are represented. Time intervals Ta and Tb between the high-power pulses 8a-c are assumed here. This leads to peak values to be assumed for the current amplitude SI and the temperature amplitude ST for the current profile 44 and temperature profile 46, as well as corresponding rise times and fall times dI/dt and dT/dt. It may be seen in FIG. 2 that no cumulative effects are achievable here. Each of the influxes 24a-c is compensated for by a corresponding respective dissipation 30a-c.


The pulse train 6 is therefore adapted by the controller 10.



FIG. 3 shows a pulse train 6 adapted in this way, in which a temporally more compact pulse train 6, that is to say with shorter time intervals T, is considered under the same assumptions A. Moreover, a fourth pulse 8d is also appended here. In this case, the dissipation 30a-d is not sufficient to compensate fully for the influxes 24a-d, and an excess accumulation 42 that increases with time, indicated here by a dashed line, remains in the target 4, or the electronic component 28, which ultimately leads to disruption thereof, specifically since the temperature profile 46 exceeds a disruption threshold SS of the target 4 at the instant t4. In the real application of this pulse train 6 onto the target 4, it is thus to be expected that the excess accumulation 42 presumed by the control unit 10 actually occurs in the target 4 and the target 4 is therefore actually disrupted (in FIG. 1, the excess accumulation 42 in the target 4 is therefore indicated once more).


However, if destruction of the target 4 is desired, the pulse train 6 is further optimized in the controller 10.



FIG. 4 lastly shows a further pulse train 6. Here, alternative high-power pulses 8a-e (high-power pulses 8d, 8e are HPEM-WB pulses of a further pulse source in the pulse source arrangement 12) are alternatively temporally concatenated even more compactly (shorter interval T). The temperature profile 46 accumulates even more strongly here and reaches a destruction threshold SZ in the target 4 as desired at the instant t5.


The corresponding combination of the high-power pulses 8a-e in the pulse trains 6 is performed with the aid of a matching rule or combination rule 50, which is symbolically indicated in FIG. 1 and is illustrated in FIGS. 2 to 4 as a corresponding concatenation of suitable high-power pulses 8a-e. This matching rule 50, as explained above, is ascertained iteratively in the controller 10 and contains the specification of a pulse repetition rate (time intervals T) of a pulse number (3 to 5 according to FIGS. 2 to 4) of a pulse length etc., here a maximum time interval T (FIG. 4) between two of the high-power pulses 8a-e etc.


A pulse shape (not represented) or a pulse sequence of the high-power pulses 8a-e may also correspondingly be varied in the iterative process (pulse shape for example by different driving of the pulse sources 14a-c, pulse sequence by different order of the driving of the different pulse sources 14a-c (mixture of electromagnetic, microwave, NB, WB or UWB pulses/source in different order)).


The current profile 44 therefore represents a (current) impulse 52 (here also as a representative of a voltage impulse) which is brought about by the high-voltage pulse 8a-e in the target 4. The dissipation properties 32a-e may therefore also be regarded as properties to be assumed concerning the behavior of the impulses 52. In particular, latency effects 54, or their behavior/decay, in the target 4 are therefore also contained, or taken into account, in the dissipation properties 32a-e.


In summary, the following method is thus carried out: in order to generate the control signal 16, it is assumed with the aid of the assumptions A that the high-power pulses 8a-e cause influxes 24a-e to be assumed in the target 4 with the aid of their influx properties 26a-e, these are subjected to a respective dissipation 30a-e according to the dissipation properties 32a-e, the pulse properties 22a-e, influx properties 26a-e and dissipation properties 32a-e are provided to the controller 10, and the controller 10 ascertains the pulse train 6 as explained above iteratively on the basis of these assumptions A, so that the cumulative influx 38 exceeds the cumulative dissipation 40 and an excess accumulation 42 takes place, which leads to disruption or destruction of the target 4 being expected.


In the method for irradiating the target 4, the above method is carried out and the pulse source arrangement 12 is driven with the ascertained control signal 16, whereupon it radiates the high-power pulses 8a-e according to the control signal 16 as a pulse train 6 onto the target 4, which leads to the expectation that the destruction of the target 4 will result.


The following is a summary list of reference numerals and symbols and the corresponding structure used in the above description of the invention:

    • 2 irradiation device
    • 4 target
    • 6 pulse train
    • 8a-e high-power pulse
    • 10 control device
    • 12 pulse source arrangement
    • 14a-c pulse source
    • 16 control signal
    • 18 output
    • 20 source system (distributed)
    • 22a-e pulse property
    • 24a-e influx
    • 26a-e influx property
    • 28 electronic component
    • 30a-e dissipation
    • 32a-e dissipation property
    • 34 input
    • 36 memory
    • 38 influx (cumulative)
    • 40 dissipation (cumulative)
    • 42 excess accumulation
    • 44 current profile
    • 46 temperature profile
    • 50 matching rule
    • 52 impulse
    • 54 latency effect
    • t1-5 instant
    • T,Ta,b interval (time)
    • A assumption
    • SI current amplitude
    • ST temperature amplitude
    • SS disruption threshold
    • SZ destruction threshold

Claims
  • 1. A control device for generating a control signal to drive a pulse source arrangement for generating a pulse train of high-power pulses for irradiating a target, wherein the pulse source arrangement contains at least one pulse source and is configured to generate the pulse train under control by the control signal;wherein each of the pulse sources of the at least one pulse source is configured to generate the high-power pulses, and each of the high-power pulses has respectively known pulse properties;wherein the pulse train of the high-power pulses is established by the control signal;wherein the pulse properties of a respective one of the high-power pulses potentially radiated into the target cause an influx into the target likely to be expected according to an assumed influx property of the target;wherein each of the influxes is assigned a dissipation likely to be expected in the target due to an assumed dissipation property of the target;the control device comprising:at least one of an input or a memory for the known pulse properties, for the assumed influx properties, and for the assumed dissipation properties;an output for outputting the control signal;the control device being configured to determine the pulse train of the high-power pulses in such a way that, based on the pulse properties and the influx properties, a cumulative influx into the target due to the incident high-power pulses is to be expected, with the cumulative influx being greater than a cumulative dissipation in the target that is to be expected based on the dissipation properties, and to cause an excess accumulation in the target according to which a desired disruption or destruction of the target is to be expected; andthe control device being configured to generate the control signal with the pulse train so determined and to deliver the pulse train at the output.
  • 2. The control device according to claim 1, wherein the control device is configured to determine the pulse train according to at least one matching rule for the high-power pulses.
  • 3. The control device according to claim 2, wherein said at least one matching rule includes a specification of at least one parameter selected from the group consisting of a pulse repetition rate, a pulse number, a pulse length, and a maximum time interval between two of the high-power pulses.
  • 4. The control device according to claim 2, wherein said at least one matching rule includes a specification of at least one of a pulse shape or a pulse sequence of high-power pulses.
  • 5. The control device according to claim 1, wherein at least one of the dissipation properties contains a property to be assumed concerning a behavior of at least one of current or voltage impulses that are brought about in the target by the high-power pulses.
  • 6. The control device according to claim 1, wherein at least one of the dissipation properties contains a property concerning at least one of a behavior in the target to be assumed or a decay of latency effects in the target.
  • 7. The control device according to claim 1, wherein at least one of the dissipation properties relates to a presumed electronic component of the target.
  • 8. An irradiation device for irradiating a target with a pulse train of high-power pulses, the irradiation device comprising: a control device according to claim 1;a pulse source arrangement having the at least one pulse source and being configured to be driven by the control signal delivered at the output of the control device;said pulse source arrangement being configured to generate the high-power pulses in a form of the pulse train defined by the control signal and to radiate the high-power pulses onto the target.
  • 9. The irradiation device according to claim 8, wherein said at least one pulse source is a high power microwave or high-power electromagnetics source with a bandwidth of selected from the group consisting of narrow band, wide band, and ultra-wide band.
  • 10. The irradiation device according to claim 8, wherein said pulse source arrangement comprises at least two different pulse sources.
  • 11. The irradiation device according to claim 8, wherein said pulse source arrangement contains at least two pulse sources in a distributed source system.
  • 12. A method of generating a control signal for driving a pulse source configured to generate a pulse train of high-power pulses for irradiating a target, the method comprising: providing a control device configured to control a pulse source arrangement containing at least one pulse source and being configured to generate the pulse train under control by the control signal; wherein each of the pulse sources is capable of generating the high-power pulses and each of the high-power pulses has respectively known pulse properties,wherein a respective one of the high-power pulses potentially radiated into the target causes in the target an influx likely to be expected from an assumed influx property of the target;wherein each of the influxes has an assigned dissipation likely to be expected in the target based on an assumed dissipation property of the target;receiving the known pulse properties, the assumed influx properties, and the assumed dissipation properties from at least one of the input or the memory;ascertaining the pulse train of the high-power pulses by the control device in such a way that, based on the pulse properties and the influx properties, a given cumulative influx into the target is to be expected from the incident high-power pulses, with the given cumulative influx into the target being greater than a cumulative dissipation in the target to be expected based on the dissipation properties, wherein an excess accumulation would occur in the target according to which a desired disruption or destruction of the target is to be expected; andgenerating the control signal representing the pulse train ascertained by the control device and providing the control signal at the output.
  • 13. A method for irradiating a target with a pulse train of high-power pulses, the method comprising: providing a control device according to claim 1 and an irradiation device with a pulse source arrangement configured for generating the pulse train of high-power pulses for irradiating the target;generating with the control device a control signal and providing the control signal at an output thereof;driving the pulse source arrangement, which contains at least one pulse source by the control signal delivered at the output of the control device;generating with the pulse source arrangement the high-power pulses in the form of the pulse train driven by the control signal, and radiating the high-power pulses onto the target.
Priority Claims (1)
Number Date Country Kind
102023005217.5 Dec 2023 DE national