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《Engineering of Surveying and Mapping》 2015-01
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Adjustment of gravity network using faint datum and robust estimation

ZHAO De-jun;ZHANG Min-li;WANG Qiang;CHEN Yong-xiang;Xi'an Division of Surveying and Mapping;State Key Laboratory of Geodesy and Earth's Dynamics;  
A method of solving a synthetic adjustment of absolute and relative gravity network using faint datum,the determination of the weights about absolute and relative gravity measurements,robust estimation weights,the choice of relative gravimeter's parameters are described in details,respectively.Some computing results show that,the accuracy of gravity network can be enhanced by faint datum adjustment,and robust estimation can reduce anomalous data's weights,of which the average error estimate of the unknown gravity values is ±13.6 × 10-8 m/s2,and random errors satisfy normal distribution.
【Fund】: 国家自然科学基金资助项目(41104047);; 大地测量与地球动力学重点实验室开放基金资助项目(SKLGED2013-4-5-E)
【CateGory Index】: P223.1
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