| SWARM卫星星载GPS天线相位中心估计及对卫星定轨的影响 |
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| 引用本文： | 徐夏炎.SWARM卫星星载GPS天线相位中心估计及对卫星定轨的影响[J].北京测绘,2020(6):825-828. |
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| 作者姓名： | 徐夏炎 |
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| 作者单位： | 武汉市测绘研究院 |
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| 摘 要： | 天线相位中心变化(PCV)作为低轨卫星精密定轨的重要误差之一,必须提前进行标定和建模。本文基于消电离层组合简化动力学定轨的残差建立了SWARM卫星星载GPS的PCV模型,并分析了PCV对卫星定轨的影响。结果表明SWARM三颗卫星的PCV模型非常相似,与高度角、方位角存在强相关性,部分区最大值可达2.0 cm,而且PCV对SWARM卫星的简化动力学和几何轨道的影响较大,尤其是法向,最大可到2.0 cm。
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| 关 键 词： | SWARM卫星 卫星定轨 PCV 星载GPS |
The Estimation of On-borne GPS Receiver of SWARM and the Effect on Precise Orbit Determination |
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| XU Xiayan.The Estimation of On-borne GPS Receiver of SWARM and the Effect on Precise Orbit Determination[J].Beijing Surveying and Mapping,2020(6):825-828. |
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| Authors: | XU Xiayan |
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| Institution: | (Wuhan Geomatic Institute,Wuhan Hubei 430022,China) |
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| Abstract: | The antenna phase center variation(PCV)is one of the important errors in the precise orbit determination(POD)of low-orbit satellite.It must be calibrated and modeled in advance.In this paper,a PCV model is established based on the residuals of POD with ionosphere-free combination observation and reduced-dynamic solution.The result shows that the PCV model of the three satellites is very similar and has a high dependence on the elevation-azimuth angle and the maximum value in some regions is up to 2.0 cm. |
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| Keywords: | SWARM satellite precise orbit determination Phase Center Variation(PCV) on-borne global positioning system(GPS) |
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