Claims
- 1. In combination:
- means for providing digital samples of radar echo signals, said digital samples being taken at intervals of time determined by a radar range setting;
- means for storing said digital samples of said radar echo signals;
- means for sequentially reading said samples out of said storing means at a rate constant over a plurality of radar range settings;
- means for displaying in the PPI mode information derived from said samples;
- a digital computer coupled to said displaying means, said digital computer operating upon at least portions of said samples for producing signals representing data to be displayed;
- a first set of switches, each of said switches of said first set corresponding to a predetermined set of instructions for performing computer operations, at least some of said operations being performed by said computer for producing display data derived from said samples; and
- a second set of numerically identified switches, activation of said switches of said second set of switches in a predetermined sequence corresponding to a predetermined set of instructions for performing a computer operation, said operation performed by said computer for producing display data derived from said samples.
- 2. The combination of claim 1 wherein:
- each switch of said first set of switches is identified in correspondence with the function to be performed by activation of the switch; and
- said switches of said second set of switches are each identified by one or more alphanumeric characters not syntactically related to the functions performed by said digital computer.
- 3. A radar system comprising in combination:
- means for providing digital samples of radar echo signals, said digital samples being taken at intervals of time determined by a radar range setting;
- means for storing said digital samples of said radar echo signals;
- means for sequentially reading said samples out of said storing means at a rate constant over a plurality of radar range settings;
- means for producing a display in response to said samples read out of said storing means;
- a digital computer, said digital computer producing data for display by said display producing means, said data being produced in response to at least some of said samples read out of said storing means;
- a first permanently programmed memory;
- a first set of operator actuable switches coupled to said computer, each of said switches corresponding to a predetermined set of instructions stored in said first permanently programmed memory, each of said switches being visually identified with a function derived from said radar echo signals to be performed upon actuation of the switch;
- a second permanently programmed memory; and
- a second set of operator actuable switches coupled to said computer, actuation of said switches in predetermined sequences corresponding to predetermined sets of instructions stored in said second permanently programmed memory, said switches individually having no syntactical correspondence to said instructions.
- 4. The combination of claim 3 further comprising:
- a read-write memory coupled to said computer, operations for both said sets of instructions stored in said first permanently programmed memory and said sets of instructions stored in said second permanently programmed memory being executed with the use of said read-write programmed memory.
- 5. The combination of claim 3 further comprising:
- a plurality of numeric displays coupled to said computer.
CROSS-REFERENCE TO RELATED CASES
This is a division of application Ser. No. 899,952, filed Apr. 25, 1978, now U.S. Pat. No. 4,205,313.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4104629 |
Isbister et al. |
Aug 1978 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
899952 |
Apr 1978 |
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