| 引用本文: | 谷德峰,涂先勤,易东云.利用SLR数据校准GPS精密定轨系统误差.[J].国防科技大学学报,2008,30(6):14-18.[点击复制] |
| GU Defeng,TU Xianqin,YI Dongyun.System Error Calibration for GPS Precise Orbit Determination with SLR Data[J].Journal of National University of Defense Technology,2008,30(6):14-18[点击复制] |
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| 利用SLR数据校准GPS精密定轨系统误差 |
| 谷德峰1, 涂先勤1,2, 易东云1 |
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(1.国防科技大学 理学院，湖南 长沙 410073;2.91550部队，辽宁 大连 116023)
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| 摘要: |
| 分析了卫星激光测距(Satellite Laser Ranging, 简称SLR)检核GPS精密定轨精度基本原理，结合GPS精密定轨误差特点，提出了一种利用SLR数据校准GPS精密定轨系统误差的新方法。新方法在卫星一次过境的短弧段内，利用多个激光测站的分时观测数据，采用多站分时投影思想，重构系统误差，辨识三个方向的定轨精度差异。新方法需要一定数据量的支持，仿真结果表明，利用3个以上测站分时投影可以校准定轨线性系统误差，并且站星矢量之间的夹角越大，效果越好。 |
| 关键词: SLR GPS 精密定轨 系统误差校准 分时投影 |
| DOI： |
| 投稿日期：2008-03-17 |
| 基金项目:航天支撑技术基金项目(2006-HT-GFKD) |
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| System Error Calibration for GPS Precise Orbit Determination with SLR Data |
| GU Defeng1, TU Xianqin1,2, YI Dongyun1 |
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(1.College of Science, National Univ. of Defense Technology, Changsha 410073, China;2.Unit 91550 of the Chinese People's Liberation Army, Dalian 116023, China)
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| Abstract: |
| This paper analyzes the principle of GPS precise orbit determination evaluation with satellite laser ranging (SLR) data, and provides a new method to calibrate orbit system error. In order to calibrate the system error and recognize the orbit precision difference in three axes, the new method uses observation data from several stations in one pass arc, and makes orbit error projection at different time. A certain amount of SLR data must be maintained for the method proposed. The simulation results indicate that using orbit error projection for more than 3 stations at different time in one pass arc can calibrate linear system error, and the bigger the angle between station and satellite vectors is, the more accurate the estimation of the system error is. |
| Keywords: SLR GPS precise orbit determination system error calibration projection at different time |
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