Patent ID: 7859451
Filing Date: 2010-12-28
Classification: G01S

Abstract:
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.