双基地天基雷达功率孔径积分析  

Analysis of Power-Aperture Product in Bistatic Space Based Radar System

作　　者：张春红[1] 宋光磊[1] 苗慧[1] 

机构地区：[1]中国空间技术研究院513所北京研发中心,北京100191

出　　处：《遥测遥控》2011年第1期39-42,共4页Journal of Telemetry,Tracking and Command

摘　　要：功率孔径积是制约天基雷达系统性能的一项重要因素。从接收功率的角度给出双基地天基雷达搜索方程的详细理论推导,并通过与单基地天基雷达搜索方程的比较得出一个重要的结论———双基地天基雷达的功率孔径积在面积覆盖率和目标散射系数固定条件下,只与接收距离有关而与发射距离无关。进一步证明了地球同步卫星-飞艇双基地天基雷达系统需要更低的功率孔径积,同时通过理论仿真给出了该类双基地系统的功率孔径积随各因素的变化趋势,从而为双基地天基雷达系统的构建和设计指明了方向。The power-aperture product is a key issue in Space Based Radar(SBR) system.By comparison with the monostatic space based radar,the power-aperture product of bistatic space based radar is described according to the detailed theoretical illation.An important conclusion about bistatic space based radar is obtained that its power-aperture product is only appropriate with square of the distance from the receiver to the target of interest on the condition of the fixed Area Coverage Rate(ACR) and the fixed Radar Cross Section(RCS) of target.Furthermore,it is proven that the geostationary-satellite and airship bistatic space based radar system has the lower power-aperture product requirement,and it is a potential system by simulations based on the above theoretical analysis.

关 键 词：双基地SBR系统 功率孔径积 面积覆盖率 目标反射截面积 

分 类 号：TN958[电子电信—信号与信息处理]