中国科技核心期刊

中文核心期刊

CSCD来源期刊

空间控制技术与应用 ›› 2009, Vol. 35 ›› Issue (1): 42-46.

• 学术研究 • 上一篇    下一篇

自适应RLS算法及其在SINS/SAR组合导航中的应用

王文辉, 李邦清, 纪志农, 余凯   

  1. 北京自动化控制设备研究所,北京 100074
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-25 发布日期:2009-02-25

Adaptive Recursive Least Squares Algorithm and Its Application in SINS/SAR Integrated Navigation Systems

WANG Wenhui, LI Bangqing, JI Zhinong, YU Kai   

  1. Beijing Institute of Automatic Control Equipment, Beijing 100074, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-25 Published:2009-02-25

摘要: 在捷联惯导(SINS)/合成孔径雷达(SAR)组合导航系统中,SAR的匹配定位信息往往数量有限,而且时间间隔互不相等。提出一种自适应递推最小二乘(RLS)算法用于组合导航。该算法将正交性原理应用于最小二乘算法中,通过构造自适应渐消因子,实现时变参数的自适应估计,给出了自适应RLS算法的递推公式,并从理论上分析了该算法的收敛性。仿真结果验证了自适应递推最小二乘算法用于SINS/SAR组合导航系统的可行性和有效性。

关键词: SINS, SAR, 组合导航, 自适应, 递推最小二乘

Abstract: The time-varying parameter estimation is a challenging problem in strapdown inertial navigation system (SINS)/synthetic aperture radar (SAR) integrated navigation systems because SAR measurements are fairly few and have unequal interval. Based on the orthogonality principle, an adaptive recursive least square (RLS) algorithm of SINS/SAR integrated navigation systems is proposed. The adaptive RLS can estimate the time -varying parameters by constructing adaptive fading factors. The adaptive RLS algorithm is deduced and its performance is rigorously analyzed. It is proved that the parameter estimation error of the algorithm is exponentially uniformly bounded. Simulation results demonstrate the feasibility and effectiveness of the proposed approach.

Key words: SINS, SAR, integrated navigation system, adaptive, RLS

中图分类号: 

  • V448