Unscented卡尔曼滤波在SINS静基座大方位失准角初始对准中的应用研究  

Study on Unscented Kalman Filter Applied in Initial Alignment of Large Azimuth Misalignment On Static Base of SINS

作　　者：丁杨斌[1] 王新龙[1] 王缜[1] 申功勋[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100083

出　　处：《宇航学报》2006年第6期1201-1204,共4页Journal of Astronautics

基　　金：国家自然科学基金(60304006)

摘　　要：静基座大方位失准角的捷联惯导系统误差方程是非线性的,如何对静基座大方位失准角的捷联惯导系统进行初始对准是需要解决的问题。本文提出了基于Unscented转换的Unsented卡尔曼滤波进行捷联惯导系统对准的方法。分别通过扩展卡尔曼滤波和Unsented卡尔曼滤波进行仿真计算,结果验证了Unscented卡尔曼滤波的有效性与优越性。The error function is nonlinear when the azimuth misalignment angle of SINS on static base is large, and it＇s a problem that how to align such SINS whose azimuth misalignment angle is large. An approach of unscented kalman filter based on unscented transformation is presented. The initial alignment of large azimuth misalignment is simulated by extended kalman filter and Unscented kalman filter respectively, and the results show that using the Unscented kalman filter is more effective and superior than using extended kalman filter.

关 键 词：UNSCENTED卡尔曼滤波 捷联惯导系统 大方位失准角 初始对准 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]