载体姿态角与SINS位置误差的关系研究

摘要

为了研究载体姿态角对捷联惯导系统位置误差的影响,建立了静基座捷联式惯导系统的力学编排及误差方程,并通过仿真实验研究了载体在不同姿态角条件下捷联式惯导系统的经度误差随时间的变化规律.仿真实验结果表明:载体姿态角对捷联式惯导系统的经度积累误差影响较大,在[0°,5°]范围内,载体航向角对经度误差漂移的影响最大,载体横滚角次之,载体俯仰角最小.%In order to study the influence of the attitude angle of the carrier on the position error of the strapdow n inertial navigation system(SINS),mechanization equations and error equations of SINS on stationary base are established and the rule of longitude error of SINS with time under different atti-tude angle conditions through simulation experiment is studied.Simulation results show that the atti-tude angle has an influence on the error of the longitude of SINS:The influence of the heading angle on the longitude error drift is the most,followed by the roll angle,and the pitch angle is the smallest in the range of[0,5°].