在组合导航中应用H_∞滤波来提高精度的研究

The research of H_∞-filtering applied to integrated navigation for improving precision

目前,Kalman滤波在组合导航中的应用已很广泛,但是,在系统模型和干扰噪声不确定的情况下,误差出现发散,精度下降。H∞滤波由于对系统模型不确定性和外界干扰具有较强的鲁棒性,可以提高滤波性能和精度。对这两种滤波方法用于导弹组合导航中的性能进行了分析。

At present, Kalman filtering in the combined navigation has been applied extensively. When there are uncertainties in system model and the disturbance is not fully known, the error is emanatire and the precision declined. Because H∞ -filtering has robustness on the uncertainties and the disturbance, its application in the combined navigation can improve the performance and the precision. These two filtering methods have been used in missiles, and their performances are compared.