| 顾及系统误差的地球静止轨道卫星PDOP值加权几何法定轨 |
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| 引用本文： | 贺凯飞,徐天河.顾及系统误差的地球静止轨道卫星PDOP值加权几何法定轨[J].海洋测绘,2009,29(5):1-4. |
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| 作者姓名： | 贺凯飞 徐天河 |
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| 作者单位： | 1. 长安大学,地质工程与测绘学院,陕西,西安710054
2. 武汉大学,测绘学院,湖北,武汉430079;西安测绘研究所,陕西,西安710054 |
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| 基金项目： | 国家自然科学基金，高等学校全国优秀博士学位论文作者专项资金资助项目，中国博士后科学基金 |
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| 摘 要： | 对顾及系统误差的地球静止轨道（GEO）卫星几何法定轨做了初步探讨,给出顾及系统误差的GEO卫星几何法定轨数学模型,推导了参数解算公式,提出PDOP值加权的几何法定轨方法,并讨论了权函数的选取。最后以卫星钟差为例进行模拟计算。结果表明：顾及系统误差的GEO卫星几何法定轨,可大大减弱系统误差对定轨结果的影响;基于PDOP值加权的几何法定轨,可进一步提高系统参数解算精度和定轨精度。
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| 关 键 词： | 地球静止轨道卫星 几何法定轨 系统误差 位置精度因子值加权 |
Geometry Orbit Determination of GEO Satellite with Systematic Errors Using PDOP Weight |
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| HE Kai-fei,XU Tian-he.Geometry Orbit Determination of GEO Satellite with Systematic Errors Using PDOP Weight[J].Hydrographic Surveying and Charting,2009,29(5):1-4. |
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| Authors: | HE Kai-fei XU Tian-he |
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| Affiliation: | 1. School of Geology Engineering and Geomatics, Chang＇ an University, Xi＇ an, Shaanxi, 710054 ; 2. School of Geodesy and Geomatics, Wuhan University,Wuhan,Hubei,430079 ; 3. Xi＇ an Research Institute of Surveying and Mapping, Xi＇ an, Shaanxi ,710054) |
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| Abstract: | In this paper, geometry orbit determination of geostationary earth orbit （GEO） satellite with systematic errors is introduced. The mathematical models and parameter estimators are presented. A new method of geometry orbit determination using PDOP weight is proposed, and the function of weight is discussed. Taking satellite clock errors for example, a simulated numerical example is performed. The results show that the influence of systematic errors on the geometry orbit can be efficiently controlled by using the new method. The precision of systematic errors and geometry orbit can be further improved by using PDOP weight. |
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| Keywords: | geostationary earth orbit satellite geometry orbit determination systematic error PDOP weighting |
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