一种改进的自适应滤波器的状态估计，效果非常之好,是用MATLAB编写的，直接在matlab下运行就可以看到完美的滤波效果，自适应算法是sage—husa算法，较传统的滤波器有很大提高-An improved adaptive filter state estimates, the effect is very good, is written in MATLAB, directly in matlab running, you can see a perfect filtering effect, the adaptive algorithm is sage-husa algorithm, than the traditional filtering has greatly improved