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The Application of Nonlinear EKF Alignment Method Based on Normal and Reverse Analysis
Received date: 2013-05-21
Online published: 2025-05-30
A kind of nonlinear EKF rapid alignment method is proposed in this paper. The advantage of quickness by reverse alignment and the nonlinear characteristics of the strap down inertial navigation error model. Its essence is that taking normal and reverse analysis repeatedly on the saved SINS data by using of the high calculating speed of the computer to complete alignment. we carry on the task of alignment by the data of simulation data and measured data to checking the validity and feasiblility of the method. Then compare with the method of normal and reverse alignment respectively based on EKF and KF. It turned out that the EKF normal and reverse alignment method can give a more accurate result than the KF. It turned out that the EKF normal and reverse alignment method can give a more accurate result than the KF normal and reverse alignment method due to the nonlinear characteristics has been intensified using the method.
Key words： normal and reverse; fast; inertial navigation; initial alignment
LI Jing Shu , XU Jiang Ning , QIN Fang Jun , CHA Feng . The Application of Nonlinear EKF Alignment Method Based on Normal and Reverse Analysis[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2014 , 34(3) : 1 -6 . DOI: 10.15892/j.cnki.djzdxb.2014.03.031
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