本文提出了一种基于转动基座的快速估计平台失准角的初始对准方法，研究了扩展观测量的Kalman滤波算法，指出转动基座初始对准的可观测度优于传统最优二位置对准。-This paper presents a quick estimate based on rotating base platform misalignment angle of the initial alignment method to study the extended observations of the Kalman filtering algorithm, that the initial alignment of the rotating base considerably superior to the traditional measure of the optimal two position alignment.