passive detection system

passive electronically scanned array (PESA) / passive phased array

passive detection

heat passive homing guidance system

passive homing system

passive orientation and damping system

tank passive pitch and roll damping system

passive optical surveillance system

passive surveillance system

Eagle Passive Active Warning Survivability System (EPAWSS)

automated target detection, tracking, co-ordinate finding and interceptor guidance system

detection system

combustible fume detection system

gunshot detection system

detection and warning system

fire detection system

radar-version microwave mine detection system

short-pulse mode radar mine detection system

fault inferring nonlinear detection system

image-intensifying Passive Driving Periscope (PDP)

passive

passive air defense

passive armor

passive counterintelligence measures

passive deception measures

passive defence

passive defense measure

passive defenseequipment

passive defenses

passive detector

passive deterrents

passive electronic countermeasures

passive electronic protective measures