基于轨道匹配和改进的空间目标识别方法  

A Method of Space Object Identification Based on Orbit Matching and Improving

作　　者：陶勇[1] 胡卫东[1] 徐劲[2] 

机构地区：[1]国防科学技术大学ATR重点实验室,湖南长沙410073 [2]中国科学院紫金山天文台,江苏南京210008

出　　处：《雷达科学与技术》2006年第3期134-139,共6页Radar Science and Technology

基　　金：国家"863"计划资助项目(No.2003AA134030)

摘　　要：空间目标识别就是对外层空间运行的目标进行类型或属性辨认。空间目标一般是沿着固有轨道运动的目标,它的轨道根数是表征其运行规律的主要参数,也是进行空间识别的基础。该文提出了一种基于轨道匹配改进的空间目标识别方法。利用空间目标运动的规律性,对目标的雷达观测数据进行初轨计算、轨道匹配和轨道改进三个部分的处理,对目标的不同圈次观测数据进行关联和积累,并在优化轨道根数的同时实现对空间目标的匹配识别。针对匹配识别模糊情况,通过分析比较轨道改进收敛时的根数内符合误差和观测数据的残差,确定最可能的匹配识别结果。仿真实验结果说明了该方法的有效性。Identification of space object is to determine the type and attribute of space object. The movement of space object can be characterized by its orbit element sets which are the base of space object identification. A method of space object identification based on orbit matching and improving is presented. The correlation and accumulation of observed data are realized by the process of initial orbit computing, orbit matching and orbit improving, and space object identification is completed during the process of optimizing the orbit element sets. When the ambiguity of orbit matching happens, the final result can be determined by analyzing and comparing the inner accuracy and the remnants. The results of simulation have shown the feasibility of this method.

关 键 词：空间目标识别 地基雷达观测 初轨计算 轨道匹配 轨道改进 

分 类 号：TN959.17[电子电信—信号与信息处理]