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    • 4. 发明授权
    • Satellite surveillance system and method
    • 卫星监控系统及方法
    • US06611226B1
    • 2003-08-26
    • US10119961
    • 2002-04-10
    • David A. JonesHenry L. McCordPaul A. JensenEric B. JensenJames M. Knight
    • David A. JonesHenry L. McCordPaul A. JensenEric B. JensenJames M. Knight
    • G01S1352
    • H01Q25/00G01S3/023G01S7/003G01S13/449G01S13/52G01S13/68H01Q1/288H01Q19/19H01Q19/192
    • A radar surveillance system includes a plurality of satellites a plurality of medium earth orbit satellites to provide continuous, long dwell coverage of a region of interest. Each satellite has an antenna having a main reflector and a subreflector electromagnetically coupled to the main reflector. A phased array generates multiple electromagnetic beams positioned so the electromagnetic beams reflect from the subreflector onto said main reflector. The system may be used in determining slow moving targets using a combination of monopulse anomaly and target spectral width measurements. The system also performs synthetic aperture radar imagery and focussed area fast moving target detection using alternating slope linear frequency modulated pulses. The plurality of medium Earth orbit satellites include a self-contained communications system consisting of high bandwidth self-relay crosslinks, high bandwidth downlink, and direct broadcast downlinks for processed data.
    • 雷达监视系统包括多个卫星,多个中等的地球轨道卫星,以提供感兴趣的区域的连续,长的停留覆盖。 每个卫星具有天线,其具有主反射器和与主反射器电磁耦合的副反射器。 相控阵列产生多个电磁束,使得电子束从副反射器反射到所述主反射器上。 该系统可用于使用单脉冲异常和目标光谱宽度测量的组合来确定慢移目标。 该系统还使用交替斜率线性调频脉冲执行合成孔径雷达图像和聚焦区域快速移动目标检测。 多个中等地球轨道卫星包括由高带宽自中继交叉,高带宽下行链路和用于处理数据的直接广播下行链路组成的独立通信系统。