Line-of-Sight Rate Estimation Based on UKF for Strapdown Seeker

	Line-of-Sight Rate Estimation Based on UKF for Strapdown Seeker
	Sun, T. T.; H. R. Chu; B. Q. Zhang; H. G. Jia; L. H. Guo; Y. Zhang and M. Y. Zhang
	2015
发表期刊	Mathematical Problems in Engineering
页码	14
摘要	Aiming at the problem that the strapdown imaging seeker cannot measure line-of-sight (LOS) rate directly, this paper presents an effective algorithm for LOS rate estimation. To address the problem, the reference frames and angles are defined. According to the relative kinematics and attitude relationship between missile and target, the nonlinear state equations and measurement equations of LOS rate are derived, and the estimation algorithm based on unscented Kalman filter (UKF) is proposed. Considering the estimation accuracy mainly depends on body LOS (BLOS) angle accuracy and gyro accuracy, the paper is unprecedented to research how these two factors impact the LOS angle and rate accuracy by simulation. Semiphysical simulation experiment verifies the correctness and accuracy of the algorithm, and the result shows that the estimation algorithm can meet the accuracy and real-time requirements of guidance system simultaneously. Thus LOS rate estimation algorithm based on UKF provides a theoretical basis for engineering applications of strapdown imaging seeker.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55410
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Sun, T. T.,H. R. Chu,B. Q. Zhang,et al. Line-of-Sight Rate Estimation Based on UKF for Strapdown Seeker[J]. Mathematical Problems in Engineering,2015:14.
APA	Sun, T. T.,H. R. Chu,B. Q. Zhang,H. G. Jia,L. H. Guo,&Y. Zhang and M. Y. Zhang.(2015).Line-of-Sight Rate Estimation Based on UKF for Strapdown Seeker.Mathematical Problems in Engineering,14.
MLA	Sun, T. T.,et al."Line-of-Sight Rate Estimation Based on UKF for Strapdown Seeker".Mathematical Problems in Engineering (2015):14.

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