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过去几个月来,围绕巴尔的摩-华盛顿国际机场空城飞行的飞机一直受到由洛克希德马丁任务系统公司设计的一个试验系统的跟踪.不要惊奇,被跟踪的飞机尽管装配有RWR或因ESM接收机,但这些告警系统都对自己被跟踪一事一概不知.洛克希德马丁公司上个月在华盛顿的AUSA展会上展示了它的“寂静哨兵”系统.研制了差不多15年之久后,这一概念可以被看成是:一半是雷达——仅就重要性而言,一半是无源的——接收机和处理器系统.“寂静哨兵”系统不依赖雷达发射机发送出大功率微波脉冲,接收机而后检测从飞机、直升机、UAV或导弹蒙皮反射回去的信号这一陈旧的概念,而是分析商业调频广播或电视广播信号的反射信号,这些广播信号在大多数人口密集区域总是大量存在的.
Over the past few months, flying around the empty city of Baltimore-Washington International Airport has been tracked by a pilot system designed by Lockheed Martin Task Systems Inc. Not to be surprised, the aircraft being tracked, despite being equipped with an RWR or an ESM receiver But none of these alert systems knew they were being tracked.The Lockheed Martin Company demonstrated its Silent Sentinel system at the AUSA show in Washington last month.After almost 15 years of development, It can be thought of as being: Half of the radar - half as important as passive - receiver and processor systems. The Silent Sentinel system does not rely on radar transmitters to send out powerful microwave pulses to receive The machine then detects the obsolete concept of signals reflected back from aircraft, helicopters, UAVs or missile skin, but analyzes reflected signals from commercial FM or TV broadcast signals that are always present in most densely populated areas of.