LI Zengke, GAO Jingxiang, WANG Jian, HU Hong. Inertial Dynamic Model of GPS/INS Integrated NavigationBased on Newton Interpolation[J]. Geomatics and Information Science of Wuhan University, 2014, 39(5): 591-595. DOI: 10.13203/j.whugis20120190
Citation: LI Zengke, GAO Jingxiang, WANG Jian, HU Hong. Inertial Dynamic Model of GPS/INS Integrated NavigationBased on Newton Interpolation[J]. Geomatics and Information Science of Wuhan University, 2014, 39(5): 591-595. DOI: 10.13203/j.whugis20120190

Inertial Dynamic Model of GPS/INS Integrated NavigationBased on Newton Interpolation

  • Objective In GPS/INS integrated navigation,the low precision of the INS dynamic model reduces nav-igation accuracy.Based on Newton interpolation,a multi-order dynamic model algorithm for GPS/INSintegrated navigation is proposed.First,the detail algorithm of Newton interpolation is introduced.Based on this a Gauss-Markov model of the inertial system is modified to realize the multi-order mod-el.The design formulas of the observation and dynamical models are presented.Finally,an actual cal-culation was performed to test the validity of new algorithm.The results of the experiment indicatethat when compared with the Gauss-Markov model,the inertial dynamic model for GPS/INS integrat-ed navigation based on Newton interpolation can improve the position and attitude precision effective-ly.At the same time,an analysis of the experiment shows that a 4-order Newton interpolation modelnot only enhances model precision,but also reduces model complexity,which provides a good refer-ence for order selection in the Newton interpolation model.
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