Claims
- 1. An adaptive receiver for determining parameters of an incoming signal, said receiver comprising:
a) a plurality of antenna channels; each of said antenna channels including a respective antenna element for receiving said incoming signal and for outputting a respective antenna channel signal; b) a switching matrix operatively coupled to receive antenna channel signals from said antenna channels; said switching matrix for distributing said antenna channel signals to a plurality of receiver channels according to a predetermined mapping; c) a multi-channel down-converter operatively coupled to receive said antenna channel signals from said receiver channels; said multi-channel down-converter for processing said antenna channel signals to output respective intermediate frequency signals; d) a plurality of analog-to-digital converters (ADCs) operatively coupled to receive said intermediate frequency signals from said multi-channel down-converter; said ADCs for converting said intermediate frequency signals to digital signals; said digital signals being indicative of at least the phase and amplitude of said incoming signal; and, e) a digital processor operatively coupled to receive said digital signals from said ADCs for determining said parameters.
- 2. The adaptive receiver of claim 1 wherein said multi-channel down-converter includes an intermediate frequency amplifier and a gain control circuit for each of said receiver channels for amplifying said intermediate frequency signals according to predetermined gains.
- 3. The adaptive receiver of claim 2 wherein said predetermined gains are selected to adjust the dynamic range coverage of said receiver channels to extend overall instantaneous dynamic range coverage.
- 4. The adaptive receiver of claim 1 wherein said intermediate frequency signals include predetermined offsets.
- 5. The adaptive receiver of claim 4 wherein said predetermined offsets are selected to adjust the instantaneous frequency range coverage of said receiver channels to extend overall instantaneous frequency range coverage.
- 6. The adaptive receiver of claim 1 wherein said plurality of receiver channels numbers four.
- 7. The adaptive receiver of claim 1 wherein said antenna element is included in an antenna face; said antenna face including a plurality of antenna elements.
- 8. The adaptive receiver of claim 7 wherein said antenna face is included in an antenna array block; said antenna array block including a plurality of antenna faces; each of said plurality of antenna faces pointing in a different direction.
- 9. The adaptive receiver of claim 8 wherein said plurality of antenna faces numbers four.
- 10. The adaptive receiver of claim 1 wherein said parameters include an angle-of-arrival (AOA) of said incoming signal.
- 11. The adaptive receiver of claim 1 wherein said incoming signal includes signals emitted from conventional and low probability of intercept (LPI) radar systems.
- 12. The adaptive receiver of claim 1 wherein said parameters include an average amplitude and a phase of an unwanted or interfering signal for digitally nullifying said unwanted or interfering signal by said digital processor.
- 13. The adaptive receiver of claim 1 wherein said multi-channel down-converter includes at least one local oscillator.
Parent Case Info
[0001] This application claims priority from U.S. Patent Application No. 60/315,948, filed Aug. 31, 2001, and incorporated herein by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60315948 |
Aug 2001 |
US |