基于EGM2008在GPS高程转换中的精度分析  

Precision analysis of GPS height transformation base on EGM2008

作　　者：姬洪亮 Ji Hongliang(Xinjiang Transportation Planning Surveying and Design Institute, Urumqi 830006, China)

机构地区：[1]新疆维吾尔自治区交通规划勘察设计研究院,新疆乌鲁木齐830006

出　　处：《山西建筑》2019年第6期206-207,共2页Shanxi Architecture

摘　　要：基于EGM2008模型进行高程转换,并将结果同水准测量结果对比分析,指出EGM2008在GPS高程转换中的精度与基准点的数量成正相关,与转换点到基准点的距离负相关,当基准点与转换点距离小于20 km时,转换精度就能够保证在20 cm以内,具有较好的现实意义。Height transformation base on EGM2008, compared with the leveling result. The accuracy of EGM2008 in GPS elevation conversion is positively correlated with the number of reference points, and negatively related to the distance from the conversion point to the reference point. When the distance between the reference point and the conversion point is less than 20 km, conversion accuracy can be guaranteed within 20 cm. And has a good practical significance.

关 键 词：EGM2008 高程异常 精度分析 

分 类 号：P223[天文地球—大地测量学与测量工程]