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飞机飞临住宅附近会引起家用电视接收机和图象的抖动。这种相互感应的自然现象正是ＬｏｃｋｈｅｅｄＭａｒｔｉｎ公司当初研制“寂静哨兵”(ＳｉｌｅｎｔＳｅｎｔｒｙ)监视系统的初衷。它的核心是被动利用多个目标被商用电视及调频信号“照射”后形成的反射。系统的概念是保密
Aircraft flying near homes can cause jitter in home television receivers and images. This natural phenomenon of mutual induction is the original intention of Lockheed Martin company to develop “Silent Sentry” surveillance system. At its heart is the passive reflection of multiple targets being “illuminated” by commercial television and FM signals. The concept of the system is confidential