| 基于PPP动态定位技术的同震地表形变分析 |
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| 引用本文： | 方荣新, 施闯, 辜声峰. 基于PPP动态定位技术的同震地表形变分析[J]. 武汉大学学报 ( 信息科学版), 2009, 34(11): 1340-1343. |
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| 作者姓名： | 方荣新 施闯 辜声峰 |
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| 作者单位： | 1武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079;2武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家自然科学基金资助项目(40904007)；国家863计划资助项目(2007AA12Z345,2007AA120603,2006AA12A109) |
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| 摘 要： | 根据沙蚁复眼中的偏振敏感神经结构,设计了一种大气偏振信息检测与导航传感器,实现了从大气偏振信息中提取二维罗盘信息。针对偏振光导航的特点,设计了一种嵌入式多信息源融合导航试验平台,实现了偏振光、三维地磁和GPS导航的有机集成。
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| 关 键 词： | 沙蚁 仿生 大气偏振模式 偏振光导航 组合导航 |
| 收稿时间： | 2009-09-18 |
| 修稿时间： | 2009-09-18 |
Precise Point Positioning with High-rate GPS Data Applied to Seismic Displacements Analysis |
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| FANG Rongxin, SHI Chuang, GU Shengfeng. Precise Point Positioning with High-rate GPS Data Applied to Seismic Displacements Analysis[J]. Geomatics and Information Science of Wuhan University, 2009, 34(11): 1340-1343. |
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| Authors: | FANG Rongxin SHI Chuang GU Shengfeng |
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| Affiliation: | 1State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2Research Center of GNSS,Wuhan University,129 Luoyu Road,Wuhan 430079,China |
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| Abstract: | In order to obtain the displacements of observation points,high-rate GPS data sets are utilized to compute the positions epoch-by-epoch with precise point positioning (PPP) techni-que. However,the precision of PPP technology is affected by systematic errors that are not currently modeled. This paper investigates high-rate GPS positioning time series and describes methods for weakening these effects. Spatial stacking and sidereal filtering methods are introduced to improve the PPP positioning results. Some high-rate GPS observation data at permanent sites from San Simeon earthquake in America and Wenchuan earthquake in China,respectively,are calculated and analyzed. Numerical results demonstrate that stacking method could efficiently eliminate spatial correlation error between stations. While sidereal filtering has positive effect on removing multipath error. Both methods could be used in reducing positioning noise involved in PPP,and make it easier to accurately detect weak earthquake signals. |
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| Keywords: | precise point positioning spatial stacking sidereal filtering seismic displacements PANDA |
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