GPS高程异常混合模型建模研究  

Research on GPS Height Anomaly Hybrid Model

作　　者：骆丽华[1,2] 覃辉[3] 

机构地区：[1]桂林理工大学测绘地理信息学院,广西桂林541004 [2]广西空间信息与测绘重点实验室,广西桂林541004 [3]广东科学技术职业学院,广东珠海519090

出　　处：《地理空间信息》2015年第6期89-92,13,共4页Geospatial Information

基　　金：国家自然科学基金资助项目(41071294);广西自然科学基金资助项目(0991023)

摘　　要：介绍GPS高程异常常用的几种拟合模型,根据"移去-恢复"法的本质,将单一模型组合起来,建立混合模型。结合具体实例,运用Matlab进行数据处理,并进行精度比较。结果表明,混合模型精度一般都高于单一模型精度,且在高程变化较大的山区效果更为明显,由此验证了混合模型在实际工程中应用的可行性。This paper briefly described several common GPS height anomaly fitting models. And then, according to the essence of RemoveRestore fitting, combining single models, the paper built the hybrid model. With the specific example, the paper used Matlab to process the GPS height anomaly data. The result shows that the accuracy of the hybrid model is generally higher than the accuracy of a single model. It is more obvious in mountain areas with great hypsography changes. Thereby the result verifies the availability of the hybrid model in practical engineering applications.

关 键 词：GPS 高程拟合 MATLAB 单一拟合模型 混合模型 

分 类 号：P228[天文地球—大地测量学与测量工程]