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针对CQG2000精度无法满足实际工作的情况,提出一种新的重力似大地水准面与GPS水准的拟合方法——残差模型法,利用CQG2000、较密集的GPS水准点,采用残差模型法建立吉林省西部地区似大地水准面模型(Jilin west quasi-geoid,JLWQG)。论述建立JLWQG的三角剖分双线性内插算法及其适用性,检测结果表明,JLWQG精度达到了±0.05m,JLWQG在吉林省西部地区基础测绘更新工作中进行了大面积的应用,取得了满意的结果。 更多还原

【Abstract】 As the precision of CQG2000 cannot meet the need of practical work,a residual model method of combining gravity quasi-geoid and GPS level has been presented.Based on CQG2000 and GPS level points with comparatively high density,the Jilin West Quasi-Geoid(JLWQG)is determined by this residual model method.This paper also discussed the triangulation bilinear interpolation algorithm and its applicability for JLWQG.The study shows that the precision of JLWQG is up to ±0.05 m.And JLWQG is widely and ef... 更多还原