同构双基地雷达星座优化设计  

Homogeneous constellations of bistatic radar design optimization

作　　者：范丽[1] 张育林[2] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073 [2]装备指挥技术学院,北京101416

出　　处：《系统工程与电子技术》2005年第11期1883-1888,共6页Systems Engineering and Electronics

基　　金："十五"国防预研基金资助课题(413200101)

摘　　要：通过对卫星的轨道特性、星座中卫星间的相对运动规律以及对地覆盖特性的研究,推导了星载单基地和双基地雷达探测区域计算公式,分析了双基地角和目标前向散射区域与卫星相对位置的关系。基于星座固有的空间约束条件,讨论了由于平台运动引起的地杂波多普勒频率扩展与卫星飞行的几何关系。最后,分析了系统性能与星座构型参数和卫星轨道根数的关系,提出了利用逆向运行极轨道同构星座作为多基地雷达星座的基本构型,并针对该构型星座提出了一套优化设计方法并给出了设计实例。Through the study on characteristics of satellite orbit, intersatellite relative motion in constellations and satellite coverage, the calculating method of monostatic and bistatic detection coverage of the space based radar is presented, The relationship between bistatic angle, forward-scatter RCS enhancement region and satellite relative position are analyzed. Based on the inherent constrains of co-altitude satellite constellations, the relationship between the ground clutter Doppler spreading and satellites flight geometries is discussed. Finally, through the analysis of system performance affected by constellation patterns and satellite orbit elements, a concept of using polar constellations of converse orbits as the basic configuration of multistatic radar constellations is put forward. According to this constellations configuration, the design optimization methods and a design instance are presented.

关 键 词：双基地 雷达 同构星座 优化设计 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程] TN953[电子电信—信号与信息处理]