Design of simulation and verification system for rotation strapdown inertial navigation system

Aiming at the problem that quantitative error analysis of strapdown inertial navigation system (SINS) caused by key error cannot be achieved, this paper accomplished the design of simulation and verification system for the single-axis continuous and the to-and-fro rotation SINS. By simulating inertial measurement unit (IMU) outputting information in different single-axis rotation methods, the principle error of SINS is simulated and validated. By designing algorithm to compensate IMU errors online, the actual rotation SINS error caused by IMU random drift error, scale factor error and installation error can be optimized. In this paper, design of individual algorithmic process and functional module are illustrated. The test results show the simulation and verification system can carry out the simulation for the rotation SINS scheme well, and can provide effective support for improvement of rotation scheme technically.