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《Journal of Geodesy and Geodynamics》 2010-03
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ERROR EFFECT OF DISTURBING GRAVITY VECTOR ON INERTIAL NAVIGATION SYSTEM

Li Shanshan,Wu Xiaoping and Wang Kai(Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052)  
The mathematic methods of position and velocity errors in Inertial Navigation System caused by disturbing gravity vector are discussed.Through the calculation of the data of a certain oceanic area where the gravity anomalies are known the magnitude and characteristics of the errors are also studied.The output information of gravity sensor in Gravity-Aided Inertial Navigation System can be applied in gravity matching to correct gyro-shifting errors of inertial navigation cumulated with time and also be used in gravity correction to eliminate Schuler errors caused by the fact that the normal gravity rather than the actual gravity is used in the mechanical equation.
【Fund】: 全国优秀博士学位论文作者专项基金(200344);; 国家自然科学基金(40774031)
【CateGory Index】: P223
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【Citations】
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