Analytical representations of precise orbit predictions for Earth orbiting space objects

作者:Sang, JZ (Sang, Jizhang)^{[ 1,2 ]} ; Li, B (Li, Bin)^{[ 1 ]} ; Chen, JY (Chen, Junyu)^{[ 1 ]} ; Zhang, P (Zhang, Pin)^{[ 1 ]} ; Ning, JS (Ning, Jinsheng)^{[ 1 ]}

ADVANCES IN SPACE RESEARCH

卷: 59

期: 2

页: 698-714

DOI: 10.1016/j.asr.2016.10.031

出版年: JAN 15 2017

摘要

Accurate orbits of Earth orbiting space objects are usually generated from an orbit determination/prediction process using numerical integrators, and presented to users in a tabulated form or a state vector including force model parameters. When dealing with hundreds of thousands of space objects such as in the space conjunction assessment, the memory required for the tabulated orbits or the computing time for propagating orbits using the state vector are both confronting to users. This paper presents two methods of analytically representing numerical orbits considering the accuracy, computing efficiency and memory. The first one is a two-step TLE-based method in which the numerical orbits are first fitted into a TLE set and then correction functions are applied to improve the position accuracy. In the second method, the orbit states are represented in equinoctial elements first, and then again correction functions are applied to reduce the position errors. Experiments using six satellite laser ranging (SLR) satellites and 12 debris objects with accurate orbits show that both methods can represent the accurate orbits over 5 days in an accuracy of a few dozens of meters for the circular orbits and several hundred meters for the eccentric orbits. The computing time is similar to that using the NORAD TLE/SGP4 algorithm, and storage for the orbit elements and function coefficients is about 3-5 KB. These features could make the two methods beneficial for the maintenance of orbit catalog of large numbers of space objects. (C) 2016 COSPAR. Published by Elsevier Ltd. All rights reserved.

作者关键词:Space objects; Precise orbit prediction; Orbit representation; Catalogue management

KeyWords Plus:SATELLITE THEORY; DEBRIS; STATION

通讯作者地址: Li, B (通讯作者)

地址:

电子邮件地址:libin@whu.edu.cn

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ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

研究方向:Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences

Web of Science 类别:Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences

文献类型:Article

语种:English

入藏号: WOS:000392773700017

ISSN: 0273-1177

eISSN: 1879-1948

Impact Factor (影响因子): 1.409