A passive target detecting system for discriminating against both doppler and continuous wave off-target radars. A signal from the missile guidance system representing the pulse repetition frequency of the target being tracked is combined in a coincidence circuit with the signals received by the target detecting device. Doppler signals are compared directly while CW signals are processed through a chopper amplifier circuit to simulate doppler signals before comparison.
申请公布号
US4321871(A)
申请公布日期
1982.03.30
申请号
US19680725262
申请日期
1968.04.24
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
发明人
ABADIE, ERWIN I.;DICK, JOHN O.;FORRESTER, HOWARD M.