Transmitting no electromagnetic wave, passive radar cannot be detected by hostile reconnaissance system.

无源雷达由于不发射电磁波，因而不易被敌方侦察系统探测到。

youdao

Transmitting no electromagnetic wave, passive radar cannot be detected by hostile reconnaissance system.

无源雷达由于不发射电磁波，因而不易被敌方侦察系统探测到。

youdao