Research on the Dynamic Error of Strapdown Inertial Navigation System

Researching on the static error of strapdown inertial navigation system (SINS) plays a great role in the past. This is mainly due to the complex mathematical model for dynamic error of SINS. It is hard to do the error analysis from the perspective of the number. So in most cases, the static model owns the better position in the research for its desirable and concise. It is easy to know the impact to system error from three major error sources, and also the reasons of every periodic oscillation. However, the limitations of the static model drives the analysis for dynamic one to be more vital for the latter is consistent with actual situation. In this paper, the dynamic error model of SINS is established basing on the static one, then do the simulative research on error of some situations which the base is having a uniform motion. And give the explanation to results of simulations from the perspective of theory. It can lay the foundation for the research of dynamic error on multiple bases for the future movement.