TLE预报精度改进及碰撞预警中的应用

刘卫; 王荣兰; 刘四清; 师立勤; 龚建村

doi:10.11728/cjss2014.04.449

TLE预报精度改进及碰撞预警中的应用

doi: 10.11728/cjss2014.04.449

中国科学院空间科学与应用研究中心北京 100190

基金项目: 国家重点基础研究计划项目资助（2011CB811406）

详细信息

通讯作者:
刘卫,E-mail:liuwei@nssc.ac.cn

中图分类号: V528
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- 被引次数: 0
出版历程
- 收稿日期: 2013-09-03
- 修回日期: 2013-11-06
- 刊出日期: 2014-07-15

TLE Prediction Accuracy Improvement and its Application in Collision Warning

Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190

摘要

摘要: 双行根数（Two Line Elements，TLE）是目前唯一公开发布且编目最完备的地球轨道空间目标编目数据，由于其根数的特殊性，必须配合SGP4/SDP4 使用导致其预报精度有限. 通过对TLE+SGP4/SDP4预报误差源的分析，利用历史TLE数据生成准观测数据重新进行轨道拟合，针对不同轨道高度和面积质量比情况，确定相应拟合周期，得出了基于弹道系数先验信息有效确定面积质量比的经验方法，对多个独立时段拟合后轨道根数结合数值方法的预报误差进行统计，结果表明，拟合后的TLE根数预报精度与稳定性有很大程度提升. 利用实例对拟合TLE在碰撞预警中的应用进行分析，认为该方法对航天工程中碰撞预警置信度的提高具有重要意义.
- 双行根数 /
- 精度改进 /
- 拟合周期 /
- 碰撞预警
Abstract: Two Line Elements (TLE) is the only publicly available and most complete data sets of Earth orbit objects. The prediction accuracy with SGP4/SDP4 is limited. The TLE+SGP4/SDP4 prediction error sources and improvement method with historical TLE data were analyzed. A pseudo-observation data generation method was introduced. The fitting period of TLE data and the value of Δt used in generating pseudo-observation are dependent on the orbital altitude. An effective area-to-mass ratio (A/M) determination method was obtained. GPS satellites prediction error in case of η estimated or not are also tested. The improved prediction accuracy is prominent in the application of US and Russian satellites collide event. Objects were selected and their orbit were predicted with an improved TLE-numerical method. The statistical results show that the TLE prediction accuracy is greatly improved. The application of the improved TLE and possible problems were also discussed.
- Two line elements /
- Accuracy improvement /
- Fitting span /
- Collision warning

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参考文献(10)

[1]	Hoots F R, Roehrich R L. Spacetrack Report No.3: Models for Propagation of NORAD Element Sets[R]. Colorado Springs, CO, USA: US Air Force Aerospace Defense Command, 1980:1-2
[2]	Vallado D A, Crawford P, Hujsak R, et al. Revisiting Spacetrack report # 3[C]//AIAA/AAS Astrodynamics Specialist Conference. AIAA 2006-6753, Reston, CA, USA: AIAA, 2006
[3]	Han Lei, Chen Lei, Zhou Bozhao. Precision analysis of SGP4/SDP4 implemented in space debris orbit prediction[J]. Chin. Space Sci. Tech., 2004, 24(4):67-71. In Chinese (韩蕾, 陈磊, 周伯昭. SGP4/SDP4模型用于空间碎片轨道预测的精度分析[J]. 中国空间科学技术, 2004, 24(4):67-71)
[4]	Wei Dong, Zhao Changyin. Analysis on the accuracy of the SGP4/SDP4 model[J]. Astron. Sinica 2009, 50(3):332-339. In Chinese (韦栋, 赵长印. SGP4/SDP4模型精度分析[J]. 天文学报, 2009, 50(3):332-339)
[5]	Liu Wei, Miao Yuanxing. Test of the accuracies of SGP4/SDP4 model predictions[J]. Astron. Res. Tech., 2011, 8(2):128-131. In Chinese (刘卫, 缪元兴. SGP4/SDP4模型预报可靠性分析[J]. 天文研究与技术: 国家天文台台刊, 2011, 8(2):128-131)
[6]	Wang R, Liu J, Zhang Q M. Propagation errors analysis of TLE data[J]. Adv. Space Res., 2009, 43(7):1065-1069
[7]	Levit C, Marshall W. Improved orbit predictions using two-line elements[J]. Adv. Space Res., 2011, 47(7):1107-1115
[8]	Bennett J C, Sang J, Smith C, et al. Improving low-earth orbit predictions using two-line element data with bias correction[C]//Advanced Maui Optical and Space Surveillance Technologies Conference 2012 (AMOS 2012). Kihei, HI, USA: Maui Economic development Board, Inc., 2012:12-14
[9]	Li Jisheng. Satellite Precision Orbit Determination[M]. Beijing: PLA Press, 1995:1-16. In Chinese (李济生. 人造卫星精密轨道确定[M]. 北京: 解放军出版社, 1995:1-16)
[10]	Wang Ronglan, Liu Wei, Gong Jiancun. Thinking problems of the present collision warning work by analyzing the intersection between Cosmos2251 and Iridium33[J]. Space Debris Res. Appl., 2012, 12(3):11-12. In Chinese (王荣兰, 刘卫, 龚建村. 通过分析美俄卫星交会碰撞事件思考目前碰撞预警工作存在的问题[J]. 空间碎片研究与应用, 2012, 12(3):11-12)