两种初始对准算法的比较研究

初始对准的精度作为影响惯性导航系统精度的核心因素，一直受到广泛的研究。传统初始对准算法存在对扰动敏感、对准时间长、需要小失准角假设等诸多缺陷。针对传统算法的不足，有学者最近提出了一些思路新颖的初始对准算法，如优化对准算法和基于频域分离算子的初始对准算法。本文对比研究了这两种初始对准算法的基本原理，通过摇摆台实测数据对两种算法进行了验证，对工程应用具有一定的参考价值。

Comparative Study of Two Initial Alignment Algorithms

Initial alignment is widely studied, because it is vitally important to the accuracy of inertial navigation systems (INS). Traditional initial alignment algorithms have some such shortcomings as vulnerability to disturbances, slow convergence, small-misalignment assumption. Quite recently, several new algorithms are proposed so as to overcome the shortcomings, including the optimal-based alignment algorithm and the initial alignment based on frequency domain isolation operator. This paper comparatively studied the principles of these two algorithms. We compare the algorithms by using swaying table data. The conclusion of the paper has a value for engineering application.