| 1. | Active detection systems , such as radar and sonar , have encountered more and more threaten in modern electronic warfare and information warfare . passive location and tracking system , which uses electromagnetic wave emitted by target , has been proved its merits of self - hiding and far - distance detecting and becomes more and more important
现代电子战和信息战条件下,雷达和声纳等有源探测系统受到越来越多的威胁,利用目标辐射电磁信息的无源定位系统由于其自身隐蔽和探测距离远等优点而日显重要。 |
