捷联式惯导系统动态误差分析

Analysis on the Dynamic Error of Strap-down Inertial Navigation System

根据捷联式惯性导航系统误差方程,分析了载体运动状态下系统的动态误差特性,并讨论了陀螺漂移、加速度计零位误差及初始误差对系统误差的作用。仿真数据由轨迹发生器产生,与以往的仿真方法相比,此方法接近实际情况,更能全面分析系统动态误差特性。

Based on the error state equation of strap-down inertial navigation system（SINS）, the dynamic error character was studied and the roles played by gyro drift bias, accelerometer bias error and initial error was analyzed under the condition of vehicle motion. The SINS＇s data is generated by a flight trajectory generator instead of the traditional method, so the simulation is close to the reality and the dynamic error character can be studied in full.