公开(公告)号：US3710390A

公开(公告)日：1973-01-09

申请号：US65891557

申请日：1957-05-01

申请人： HUGHES AIRCRAFT CO

发明人： KREINHEDER D

IPC分类号： G01S13/68 ,  G01S9/22

CPC分类号： G01S13/68

摘要： 6. An electronic lobe switching system for locating a target in space comprising: a simultaneous lobing antenna including four symmetrically positioned radiators defining the corners of a square, and a plurality of intercoupled hybrid junctions having four input terminals, a sum output terminal, an azimuth output terminal and an elevation output terminal, each of said radiators being coupled to one of said input terminals and adapted to excite a microwave signal therein representative of a microwave signal received from said target, said plurality of hybrid junctions being adapted to develop a sum signal in said sum terminal, an azimuth signal in said azimuth terminal and an elevation signal in said elevation terminal representative of the range, the azimuth and the elevation of said target respectively; a receiver responsive to a microwave error signal and a reference signal and adapted to develop demodulated error voltages representative of the azimuth and elevation of said target; and a switching circuit responsive to said sum signal, said azimuth signal and said elevation signal and coupling and said simultaneous lobing antenna to said receiver, said switching circuit being adapted to develop said microwave error signal and including a microwave two-channel switch, a microwave phase inverter, adder means, and an electronic reference generator for developing said reference signal and first and second control signals, said switch being coupled to said phase inverter and to said generator and responsive to said first control signal for sequentially applying either said azimuth signal or said elevation signal to said phase inverter, said phase inverter being coupled to said generator and being responsive to said second control signal for sequentially introducing a 180* phase shift to the sequentially applied azimuth or elevation signal, and adder means coupling said phase inverter to said sum terminal and being adapted to mix the sequentially phase-inverted signal from said phase inverter and said sum signal to develop said microwave error signal.