基于TLE的空间目标碰撞预警计算  

Space Objects Collision Prediction Based on TLE

作　　者：王若璞[1] 张浚哲[2] 郑勇[1] 骆亚波[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052 [2]首都师范大学物理系,北京100048

出　　处：《测绘科学技术学报》2009年第4期269-271,275,共4页Journal of Geomatics Science and Technology

基　　金：信息工程大学测绘学院课题资助项目(Y0806)

摘　　要：地球轨道上数量日益增长的空间飞行物体对在轨航天器及人类航天活动构成了严重威胁。分析了空间目标两行轨道根数(TLE)的格式及构成;阐述了相应的SGP4/SDP4轨道近似解析解模型算法;提供了轨道坐标系和惯性坐标系之间的转换关系;利用TLE数据和SGP4/SDP4模型进行了空间目标碰撞预警计算。该方法对于航天器初步威胁评估具有重要意义。The population of space objects in the earth orbit is increasing and these objects have serious hazards to spacecrafts and space activities. The format and composition of two-line element sets were analyzed firstly. And then Simplified General Perturbations Version 4 and Simplified Deep-space Perturbation （SGP4/SDP4） or- bital model which developed from analytic orbital theory were introduced. And the coordinate transformation from True Equator and Mean Equinox of Date to Earth Mean Equator and Equinox of Date was provided. At last, based on TLE data and SGP4/SDP4 model, the distance between two objects was calculated. This method shows the significance to the initial prediction of danger to spacecrafts.

关 键 词：空间目标 两行轨道根数 SGP4/SDP4模型 轨道预测 碰撞预警 

分 类 号：P228[天文地球—大地测量学与测量工程]