| 基线法在卫星重力数据处理中的应用 |
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| 引用本文： | 肖云,夏哲仁,孙中苗,庞振兴.基线法在卫星重力数据处理中的应用[J].武汉大学学报(信息科学版),2011(3). |
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| 作者姓名： | 肖云 夏哲仁 孙中苗 庞振兴 |
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| 作者单位： | 西安测绘研究所; |
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| 基金项目： | 国家自然科学基金资助项目(40804001) |
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| 摘 要： | 提出了一种恢复地球重力场并同时改善部分轨道初始参数的方法——基线法。给出了基线法的基本原理,推导了基线参数与直角坐标形式参数的相互转换公式,分析了星间距离和距离变率对基线参数的敏感性。分别用基线法和经典动力学法处理了一组GRACE实际观测数据,结果表明,采用基线法较经典动力学法得到了一个精度更高的地球重力场模型,其大地水准面累积误差(最高60阶)减少了3 cm。
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| 关 键 词： | 卫星重力测量 地球重力场恢复 GRACE CHAMP 卫星跟踪卫星 |
Application of an Improved Dynamic Method Baseline Method to Satellite Gravtimetry Data Processing |
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| XIAO Yun XIA Zheren SUN Zhongmiao PANG Zhenxing.Application of an Improved Dynamic Method Baseline Method to Satellite Gravtimetry Data Processing[J].Geomatics and Information Science of Wuhan University,2011(3). |
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| Authors: | XIAO Yun XIA Zheren SUN Zhongmiao PANG Zhenxing |
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| Institution: | XIAO Yun1 XIA Zheren1 SUN Zhongmiao1 PANG Zhenxing1 (1 Xi'an Research Institute of Surveying and Mapping,1 Middle Section,Yanta Road,Xi'an 710054,China) |
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| Abstract: | We present a new method,named baseline method,which used for recovering the Earth's gravity field and improving some parameters of initial orbital vector simultaneously.The principle of the baseline method is introduced.The formulae of transforming between baseline parameters and typical Cartesian parameters are deduced.And the sensitivities of inter-satellite observations to baseline parameters are analyzed.The two Earth's gravity field models are recovered from GRACE data by typical method and baseline me... |
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| Keywords: | satellite gravimetry the Earth gravity field recovery GRACE CHAMP satellite-to-satellite tracking |
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