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利用TLE星历数据反演热层密度初步结果

发表时间:2016-07-31  浏览量:1503  下载量:592
全部作者: 李文文,李敏,邹璇
作者单位: 武汉大学卫星导航定位技术研究中心
摘 要: 介绍一种采用卫星两行轨道根数(two line elements,TLE)反演热层平均密度以及计算弹道系数B的方法,并对实际数据处理的相关问题进行讨论。选择19个轨道高度800 km以内的空间物体为研究对象,并采用HWM93风速模型以及NRLMSISE00作为背景大气密度模型,对1980年至2012年间的历史TLE数据进行处理,验证分析表明,利用本文介绍的方法解算了16个物体的B系数,与Bowman发布的精确B系数相比其最大误差为10%,对于大部分物体误差在±5%以内,平均误差为-0.4%.
关 键 词: 大地测量技术;卫星两行轨道根数;热层密度;SGP4;NRLMSISE00
Title: Preliminary results on deriving averaged thermosphere density with TLE data
Author: LI Wenwen, LI Min, ZOU Xuan
Organization: GNSS Research Center, Wuhan University
Abstract: We introduced a method that used mean motion data from TLEs to derive averaged thermosphere density and the ballistic coefficient B of low earth objects (LEOs). Some practical issues on two line elements (TLE) data processing were also discussed. By using HWM93 model and NRLMSISE00 model as the background atmosphere density model, 19 LEOs with their orbital altitude within 800 km were selected for this study and their historical TLE data from 1980 to 2012 were processed. By comparison with the B values of 16 objects from Bowman (2002), experiment shows that by using the method described in this paper, the maximum relative error of B is about 10%. For most objects, the error of B is within ±5%, and the overall mean error is about -0.4%.
Key words: geodesy technique; two line elements; thermosphere density; SGP4; NRLMSISE00
发表期数: 2016年7月第14期
引用格式: 李文文,李敏,邹璇. 利用TLE星历数据反演热层密度初步结果[J]. 中国科技论文在线精品论文,2016,9(14):1395-1401.
 
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