观测数据关联的泰勒展开径向速率方法  

Radial Velocity Method Based on Taylor Expansion for Observation Data Association

作　　者：邢东旭[1] 柳仲贵[1] 张艳[1] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《飞行器测控学报》2015年第4期374-380,共7页Journal of Spacecraft TT&C Technology

摘　　要：针对近地空间目标编目探测中,双屏电子篱笆的观测数据关联判断的问题,提出一种基于泰勒展开的径向速率数据关联方法。该方法对关联判断中径向速率这一判别量的计算采用泰勒展开的方式;与传统方法相比,该方法不需要进行地心地固坐标系与地心惯性系坐标转换,也不需要迭代计算初轨根数,具有简单、快速、符合精度需求的特点。在双屏电子篱笆探测LEO(Low Earth Orbit,低地球轨道)cm级空间目标的应用仿真中,该方法与使用初轨确定结果的径向速率方法相比,判断正确率基本相同,但所需计算时间比后者低一个数量级。因此,所述方法的判断效率较高,可为编目探测系统的数据处理流程提供参考。A radial velocity association method based on Taylor expansion is proposed to meet requirements of data association in data processing of double fence radar for cataloguing detection of space objects.The method computes radial velocity in judging variable in data association with Taylor expansion.Unlike traditional methods,the method doesn＇t need coordinate transformation between ECI（Earth Center Inertial）and ECEF（Earth Center Earth Fixed）,or initial orbit determination,and has the features of simplicity,speediness and satisfying precision.In simulation of detecting centimeter-size space objects in LEO（Low Earth Orbit）by double fence radar,this method has the same accuracy as the radial velocity method based on initial orbit determination,but it consumes one magnitude less computing time.Therefore,the more efficient method can be taken into account by data association of cataloguing detection systems.

关 键 词：空间目标探测 空间目标编目 双屏电子篱笆 数据关联 泰勒展开 误差分析 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程] V556.3