基于TLE和YUMA历书的北斗卫星轨道预报精度对比分析  

Comparative Analysis of Beidou Satellite Orbit Prediction Accuracy Based on TLE and YUMA Almanac

作　　者：卢立果 蔡玉林 吴汤婷 LU Liguo;CAI Yulin;WU Tangting(School of Surveying and Geoinformation Engineering,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学测绘与空间信息工程学院,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2024年第5期442-448,共7页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金项目(42264003);赣鄱俊才支持计划——主要学科学术和技术带头人培养项目(20232BCJ23018);江西省自然科学基金项目(20224BAB213048)。

摘　　要：卫星轨道预报是实现地面站对北斗卫星导航系统(BDS)卫星进行有效监测与跟踪的必要条件。为确定两行轨道根数(TLE)和YUMA历书在不同情境下对于BDS卫星轨道预报的适用情况及其优劣性,分别利用TLE和YUMA历书对BDS卫星轨道进行预报,并采用武汉大学IGS数据中心(WHU)发布的BDS精密星历作为参考基准,对比分析了两种预报方法实现的BDS地球静止轨道(GEO)、倾斜地球同步轨道(IGSO)和中圆地球轨道(MEO)三类卫星的位置预报精度。结果表明,在24 h短期预报中,两种方法均可维持较高的预报精度,TLE的短期预报精度优于2.0 km,YUMA历书的短期预报精度优于9.0 km;在长期预报中,TLE可以维持较为稳定的轨道预报精度,YUMA历书随着时间的增加,其轨道误差会迅速增大;两种方法对于GEO卫星的轨道预报精度均低于对IGSO卫星和MEO卫星的预报精度。The satellite orbit prediction is a necessary condition for the ground station to effectively monitor and track the Beidou navigation satellite system(BDS)satellite.To determine the application of two-line orbit elements(TLE)and YUMA almanacs for BDS satellite orbit prediction in different situations and their advantages and disadvantages,the TLE and YUMA almanacs are used to predict the BDS satellite orbits,and the BDS precise ephemeris published by the IGS data center(WHU)of Wuhan University is used as the reference data.The position prediction accuracy of BDS geostationary orbit(GEO),inclined geosynchronous orbit(IGSO)and medium earth orbit(MEO)satellites realized by the two prediction methods are compared and analyzed.The results show that both methods can maintain high accuracy in 24-hour short-term prediction.The short-term prediction accuracy of TLE is better than 2.0 km,and the short-term prediction accuracy of the YUMA almanac is better than 9.0 km.In long-term prediction,TLE can maintain relatively stable orbit prediction accuracy,while the orbit error of the YUMA almanac will rapidly increase with time.The orbit prediction accuracy of the two methods for GEO satellites is lower than that of IGSO satellites and MEO satellites.

关 键 词：北斗卫星导航系统 轨道预报 两行轨道根数 YUMA 

分 类 号：P228[天文地球—大地测量学与测量工程]