北斗卫星ECOM光压模型参数选择策略分析

毛悦; 宋小勇; 贾小林; 阮仁桂

doi:10.11947/j.AGCS.2017.20160485

测绘学报 >

2017 , Vol. 46 >Issue 11: 1812 - 1821

DOI: https://doi.org/10.11947/j.AGCS.2017.20160485

大地测量学与导航

北斗卫星ECOM光压模型参数选择策略分析

毛悦 ,
宋小勇 ,
贾小林 ,
阮仁桂

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1. 地理信息工程国家重点实验室, 陕西西安 710054;
2. 西安测绘研究所, 陕西西安 710054

毛悦(1981-),女,工程师,博士,主要从事卫星导航及其应用研究。E-mail:maoyue0810@163.com

收稿日期: 2016-09-30

修回日期: 2017-09-18

网络出版日期: 2017-12-05

基金资助

国家自然科学基金（41774012）

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Analysis about Parameters Selection Strategy of ECOM Solar Radiation Pressure Model for BeiDou Satellites

MAO Yue ,
SONG Xiaoyong ,
JIA Xiaolin ,
RUAN Rengui

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1. State Key Laboratory of Geo-information Engineering, Xi'an 710054, China;
2. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China

Received date: 2016-09-30

Revised date: 2017-09-18

Online published: 2017-12-05

Supported by

The National Natural Science Foundation of China (No. 41774012)

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摘要

以ECOM经验光压模型为基础，利用北斗卫星3年的精密星历进行轨道拟合，获得了ECOM光压参数的变化规律，给出了北斗3类卫星的ECOM光压参数选择策略。从北斗卫星姿态控制模式出发，通过卫星星体受照分析，指出在北斗卫星地影期零偏航状态下，由于太阳对卫星帆板的不正照，导致与动态偏航姿态相比，光压摄动力存在与轨道周期相关的分量，需要在ECOM 5参数的基础上增加D向周期分量进行吸收。通过MGEX全球网数据定轨试验，本文提出的方法可使零偏段定轨重叠段位置精度提高50%～80%。

关键词： 北斗卫星导航系统; 太阳光压模型; 卫星姿态控制模式; 轨道确定; ECOM; 地影期

本文引用格式

毛悦 , 宋小勇 , 贾小林 , 阮仁桂 . 北斗卫星ECOM光压模型参数选择策略分析[J]. 测绘学报, 2017 , 46(11) : 1812 -1821 . DOI: 10.11947/j.AGCS.2017.20160485

Abstract

In this paper,the variations of ECOM solar radiation pressure model parameters were analyzed for BeiDou satellites through orbit fitting using 3 years precise ephemeris data. The ECOM parameter selection strategies for the three types of BeiDou satellites were confirmed. Based on the satellite attitude control modes,satellite illumination was theoretically analyzed. We pointed out that solar panels are perpendicular illuminated,and then solar radiation pressure has the periodic component associated with the orbital period when satellite is at orbit-normal attitude control mode. Periodic parameters of D direction need to be added to enhance the ECOM 5 parameters. Orbit determination tests were carried out using MGEX global network data. Tests prove that using ECOM 7 parameters the orbit overlap accuracy improvement could reach up to 50%~80%.

Key words： BeiDou navigation satellite system; solar radiation pressure model; satellite attitude control mode; orbit determination; ECOM; earth eclipse segment

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