GPS似大地水准面精化及精度分析  

Refining Quasi Geoid and Precision Analysis with GPS

作　　者：范占永[1] 李磊 蔡东健[1] 高笔清 

机构地区：[1]苏州工业园区测绘地理信息有限公司,江苏苏州215001 [2]张家港市城市测量队,江苏张家港215600 [3]江西理工大学建筑与测绘工程学院,江西赣州341000

出　　处：《水利与建筑工程学报》2015年第6期161-164,共4页Journal of Water Resources and Architectural Engineering

摘　　要：基于原有似大地水准面,利用具有高精度实测的GPS水准点,采用二次多项式拟合法,结合最小二乘建立某区域似大地水准面精化模型。通过平均偏差、最大偏差、中误差对精化后的似大地水准面模型作精度分析,证明某区域似大地水准面精化的有效性。通过精化后,最终得到的似大地水准面内符合精度为±0.016 m。Based on the existing quasi geoid,the regional quasi geoid refinement model with high precision measurement of GPS leveling points was established using quadratic polynomial fitting method and least square. And then the precision analysis was conducted on this model from the aspects of average deviation,maximum deviation and mean square error. The conclusion proves the validity of a regional refined quasi geoid. Through the refinement,the internal accuracy of quasi geoid is ± 0. 016 m.

关 键 词：似大地水准面 GPS水准点 精化 精度分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]