Communications: directive radio wave systems and devices (e.g. – Determining direction – Monopulse
Reexamination Certificate
2008-11-18
2010-12-28
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
Monopulse
C342S152000, C342S080000, C342S133000, C342S139000, C342S140000, C342S146000
Reexamination Certificate
active
07859451
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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Kaup Peter G.
Yu Kai-Bor
Howard IP Law Group PC
Lockheed Martin Corporation
Sotomayor John B
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