|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 1 인용 특허 : 0|
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.
In a target detecting device of the passive type for use in a guided missile: (a) signal receiving means for receiving pulsed and continuous wave signals from radiating targets for producing negative and positive output pulses and positive and negative dc signals, (b) missile guidance circuit means for receiving signals from radiating targets and producing output signals representing the pulse repetition rate of the target radar of interest, (c) an “and”gate circuit having a plurality of inputs and an output, (d) chopper-amplifier circuit means coupled t...