基于EGM2008和Kriging的GPS高程拟合算法 |
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引用本文: | 冯艳顺,魏磊,张跃飞,康宗道. 基于EGM2008和Kriging的GPS高程拟合算法[J]. 测绘与空间地理信息, 2013, 0(12): 196-198 |
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作者姓名: | 冯艳顺 魏磊 张跃飞 康宗道 |
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作者单位: | 河南省地质测绘总院,河南郑州450006 |
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摘 要: | 简述了GPS高程拟合的原理,采用移去一恢复法,结合最新的高精度地球重力场模型EGM2008,运用地统计学中的泛克里格方法(Kriging),充分考虑先验统计信息以及各点的空间相关性,在无偏性和最小方差原则下,准确获取了未知点的高程异常。经实例验证:该方法具有模型严密、可靠性好、拟合精度高等优点,适用于地形复杂地区。
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关 键 词: | EGM2008 泛克里格 半变异函数 GPS高程 |
GPS Elevation Fitting Method Based on Kriging and EGM2008 |
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Affiliation: | FENG Yan- shun, WEI Lei, ZHANG Yue - fei, KANG Zong - dao (Henan Provincial Geological Surveying and Mapping Institute, Zhengzhou 450006, China) |
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Abstract: | Outlines the principles of GPS elevation fitting, using the remove - restore method, combined with the latest high - preci- sion models EGM2008 Earth gravity field, the use of universal Kriging methods in geo - statistical (Kriging) , fully taking into account a prior statistical information, as well as the spatial correlation, under the principles of unbiased and minimum varianee and accurately get the unknown points of height anomaly. Example: model method that has tight fitting, good reliability, high precision, suitable for complicated topography area. |
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Keywords: | EGM2008 Kriging semi - variograms GPS |
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