METHOD AND SYSTEM FOR MONOPULSE RADAR TARGET ANGLE DETERMINATION
First Claim
1. A computer-implemented method for determining target angles based on data received from a monopulse radar array antenna, comprising the steps of:
- receiving by a processor of the computer, from a beamformer that generates beams from signals generated by the monopulse radar array antenna, signals having data indicative of a sum beam, an azimuth difference beam, an elevation difference beam, and a delta-delta beam;
based on the received signals, determining by the processor an azimuth monopulse ratio, an elevation monopulse ratio, a first complementary monopulse ratio based on the ratio of the delta-delta beam to the delta elevation beam, and a second complementary monopulse ratio based on the ratio of the delta-delta beam to the delta azimuth beam;
determining an azimuth angle by the processor based on the azimuth monopulse ratio and the first complementary monopulse ratio;
determining an elevation angle by the processor based on the elevation monopulse ratio and the second complementary monopulse ratio;
providing an output signal indicative of the azimuth angle; and
providing an output signal indicative of the elevation angle.
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Accused Products
Abstract
A method for determining target angles based on data received from a monopulse radar array antenna includes receiving from a beamformer that generates beams from signals generated by the monopulse radar antenna signals having data indicative of a sum beam, an azimuth difference beam, an elevation difference beam, and a delta-delta beam; based on the received signals, determining by the processor an azimuth monopulse ratio, an elevation monopulse ratio, a first complementary monopulse ratio based on the ratio of the delta-delta beam to the delta elevation beam, and a second complementary monopulse ratio based on the ratio of the delta-delta beam to the delta azimuth beam; determining an azimuth angle by the processor based on the azimuth monopulse ratio and the first complementary monopulse ratio; determining an elevation angle by the processor based on the elevation monopulse ratio and the second complementary monopulse ratio; providing an output signal indicative of the azimuth angle; and providing an output signal indicative of the elevation angle.
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Citations
20 Claims
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1. A computer-implemented method for determining target angles based on data received from a monopulse radar array antenna, comprising the steps of:
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receiving by a processor of the computer, from a beamformer that generates beams from signals generated by the monopulse radar array antenna, signals having data indicative of a sum beam, an azimuth difference beam, an elevation difference beam, and a delta-delta beam; based on the received signals, determining by the processor an azimuth monopulse ratio, an elevation monopulse ratio, a first complementary monopulse ratio based on the ratio of the delta-delta beam to the delta elevation beam, and a second complementary monopulse ratio based on the ratio of the delta-delta beam to the delta azimuth beam; determining an azimuth angle by the processor based on the azimuth monopulse ratio and the first complementary monopulse ratio; determining an elevation angle by the processor based on the elevation monopulse ratio and the second complementary monopulse ratio; providing an output signal indicative of the azimuth angle; and providing an output signal indicative of the elevation angle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for determining target angles based on data received from a monopulse radar array antenna, comprising;
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a memory device; a processor coupled to the memory device, the processor adapted to; receive from a beamformer that generates beams from signals generated by the monopulse radar array antenna, signals having data indicative of a sum beam, an azimuth difference beam, an elevation difference beam, and a delta-delta beam; based on the received signals, determine an azimuth monopulse ratio, an elevation monopulse ratio, a first complementary monopulse ratio based on the ratio of the delta-delta beam to the delta elevation beam, and a second complementary monopulse ratio based on the ratio of the delta-delta beam to the delta azimuth beam; determine an azimuth angle based on the azimuth monopulse ratio and the first complementary monopulse ratio; determine an elevation angle based on the elevation monopulse ratio and the second complementary monopulse ratio; provide an output signal indicative of the azimuth angle; and provide an output signal indicative of the elevation angle. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for determining target angles based on data received from a monopulse radar array antenna having a plurality of elements comprising the steps of:
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forming by a beamformer based on signals generated by the monopulse rectangular radar array antenna signals having data indicative of a sum beam, an azimuth difference beam, an elevation difference beam, and a delta-delta beam; based on the received signals, determining by the processor an azimuth monopulse ratio, an elevation monopulse ratio, a first complementary monopulse ratio based on the ratio of the delta-delta beam to the delta elevation beam, and a second complementary monopulse ratio based on the ratio of the delta-delta beam to the delta azimuth beam; determining an azimuth angle by the processor based on the azimuth monopulse ratio and the first complementary monopulse ratio; determining an elevation angle by the processor based on the elevation monopulse ratio and the second complementary monopulse ratio; providing an output signal indicative of the azimuth angle; and providing an output signal indicative of the elevation angle. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification