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《Editorial Board of Geomatics and Information Science of Wuhan University》 2004-03
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A Local Geoid Determination Using Least-Squares Collocation

ZOU Xiancai 1 LI Jiancheng 1 (1 School of Geodesy and Geomatics,Wuhan University, 129 Luoyu Road,Wuhan 430079, China)  
On the basis of the theory of least-squares collocation (LSC), the approach used to define a local covariance function is described. This paper selects a 6°×6°test area (30°N~36°N, 96°E~102°E) in western China, and carries out an experiment for local geoid determination by using LSC and combing terrestrial gravity data, 30″×30″ digital terrain model and EGM96 geopotential model. The 2.5′×2.5′ gridded geoid heights are obtained.
【Fund】: 国家自然科学基金资助项目 ( 4 0 2 740 0 4)
【CateGory Index】: P22
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