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JIN Jihang, BIAN Shaofeng. Analysis of Inertial Navigation System Positioning Error Caused by Gravity Disturbance[J]. Geomatics and Information Science of Wuhan University, 2010, 35(1): 30-32.
Citation: JIN Jihang, BIAN Shaofeng. Analysis of Inertial Navigation System Positioning Error Caused by Gravity Disturbance[J]. Geomatics and Information Science of Wuhan University, 2010, 35(1): 30-32.
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Analysis of Inertial Navigation System Positioning Error Caused by Gravity Disturbance

  • 1College of Electrical and Information Engineering,Naval Univ.of Engineering,717 Jiefang Road,Wuhan 430033,China;2Institute of Hydrographic Surveying and Charting,40 Youyi Road,Tianjin 300061,China

Funds: 国家杰出青年科学基金资助项目(40125013)；国家自然科学基金资助项目(40774002)
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  • Received Date: October 27, 2009
  • Revised Date: October 27, 2009
  • Published Date: January 04, 2010
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  • The error of high-accuracy inertial navigation system(INS) caused by the gravity disturbance can't be neglected.Starting from the physical geodesy and Newton's second law,an error dynamics equation of INS,including the influence of gavity disturbance,is firstly presented in this paper.Then,taking single-axis INS as an example,the position error caused by the deflection of vertical and corresponding characteristics of error propagation in three situation were analyzed.Finally,simulation was done on 1′×1′ deflection of vertical database,and from the simulation result we can see that the horizontal error of INS caused by deflections of the vertical on the sailing course can reach as large as 3 km.
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