摘要
将H∞滤波用于舰载导弹捷联惯导系统(SINS)的动基座传递对准。仿真研究结果表明,在测量噪声强度较小时,H∞滤波方法的显著特点是估计速度优于Kalman滤波,其估计精度略低于Kalman滤波。为提高动基座传递对准的快速性,将精对准分为两次进行。第一次精对准利用H∞滤波估计速度快的这一优点,通过速度匹配进行水平对准,第二次精对准采用Kalman滤波通过速度加姿态变化量匹配进行航向对准。仿真结果表明,在测量噪声强度较小时,第一次对准可在2秒钟之内完成,第二次对准可在7秒钟之内完成。两次传递对准可在9秒钟之内完成。
H∞ filter was applied to the transfer alignment of marine missile Strapdown Inertial Navigation System on a moving base. Simulation shows that if measurement noise is small, the outstanding feature of H∞ filter is superior to Kalman filtering in estimation speed, but its estimation accuracy is slightly lower than Kalman filter. In order to enhance the rapidity of the transfer alignment, the accurate alignment was achieved in twice. In the first time alignment, H∞ filter feature being taken advantage of, horizontal alignment was achieved by velocity match. In the second time alignment, Kalman filter being used, azimuth alignment was achieved by velocity plus attitude change match. Simulation shows that if measurement noise is small, the first time alignment is achieved in 2 seconds, and the second time alignment is achieved in 7 seconds, and the accurate alignment is achieved in 9 seconds.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2006年第6期1266-1270,共5页
Journal of Astronautics
基金
武器装备预研基金资助项目(514090101HT0141)
关键词
捷联惯导系统
动基座对准
传递对准
H∞滤波
卡尔曼滤波
Strapdown inertial navigation system
Moving base aligmnent
Transfer aligmnent
H∞ filtering
Kalman filtering