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《Progress in Geophysics》 2008-06
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GPS/gravity boundary value problem and its practical formula

ZHANG Li-ming1,LI Fei2,ZHANG Chuan-yin1(1.Chinese Academy of Surveying and Mapping,Beijing 100039,China; 2.National Lab.for Information Engineering in Surveying and Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China)  
Based on the approximate solution of the GPS/gravity boundary value problem(BVP),we deduce the practical formula which has a simple form and clear physical meanings.Meanwhile,using the Taylor series expression of gravity disturbances,we directly prove the correctness of the practical formula and analyze its physical implication in detail.It is very important for the variety of data that vertical gradient of gravity disturbances is introduced in the practical formula.
【Fund】: 国家高技术研究发展计划(863计划);; 国家自然科学基金(40674005);; 中国测绘科学研究院基本科研业务费专项;; 国家测绘局基础测绘项目;; 地理空间信息工程国家测绘局重点实验室开放基金联合资助
【CateGory Index】: P223
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