3-Channel selectable polarization, target discrimination antenna
- 申请公布号：
- US3988732(A)
- 申请号：
- US19650515740
- 申请日期：
- 1965.12.22
- 申请公布日期：
- 1976.10.26
- 申请人：
- THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
- 发明人：
- BRICKEY, ORVILLE G.
- 分类号：
- G01S7/02;G01S13/44;H01Q21/24;H01Q25/02;(IPC1-7):H01Q15/24
- 主分类号：
- G01S7/02
- 摘要：
- A monopulse radar antenna having an improved three-channel feedhorn for providing selectable polarization and greater target discrimination. The antenna feed employs a comparator having a difference port, a first sum port, and a second sum port utilizing a coupling pin or probe therein, between the comparator ports and an adjustable polarization device, for receiving and separating returned energy which has become cross-polarized with respect to the polarization of the transmitting sum arm, by reflection from an asymmetrical target. The three-channel feedhorn makes possible the identification of different types of targets, and the detection of hidden targets in rough terrain, forests, underbrush, and rough seas.
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