惯性/高度表组合导航系统卡尔曼滤波算法的浑沌及其控制

本文研究了组合导航系统中应用卡尔曼滤波器进行信息最优估计时的浑沌现象和浑沌 控制，并以惯性系统和高度定位组合导航系统为例，研究了当载体受周期激励时，由于采样频 率选择不当，卡尔曼滤波算法将导致浑沌结果，从而影响系统导航精度。本文还提出了利用变 步长的参数调整法来抑制这种浑沌。

Chaos and its Control on Kalman Filter Algorithm in Integrated Navigation System of INS/Altitude Gauge

This paper studies the chaos caused by Kalman filter algorithm and its control.Taking the integrated navigation system of an inertial system and an altitude gauge as an example,the paper shows that when a body is driven by a period signal,a chaotic result may be formed because of the Kalman filter algorithm.The reason is that the sampling frequency is not suitable.Therefore the navigation accuracy of the system will be lowered.The paper proposes that this kind of chaos can be controlled by a parameter adjusting method(varying step).