Active Radar and Passive Radar
Passive Radar Based on External Emitters
外辐射源雷达
基于外辐射源的无源雷达
基于外辐射源无源雷达
Passive Radar Based on Opportunity Transmitter
passive-radar-seeker PRS
passive-radar-seeker(PRS)
the external emitter passive radar
Passive Air Defense Radar
passive monitoring radar
passive reconnaissance radar
passive element passive element
microwave early warning radar {= MEW radar}