针对运载体运行过程中稳瞄稳向系统IMU主要参数的标定问题,提出了速度加姿态匹配的在轨标定方案,建立了在轨标定的状态空间模型。通过研究运载体不同动态条件下各状态可观测度值,确立了在轨标定过程的动态规划方案。采用速度加姿态匹配方法,以主惯导信息为基准,进行了在轨标定实验。实验结果表明,速度加姿态匹配在轨标定方法可对稳瞄稳向系统惯性测量组件主要参数进行有效标定,且标定精度最高可达到真值的90%。

To accomplish the main parameter calibration of stable targeting system when transporter running, speed and attitude matching method of in-orbit calibration was put forward, and a state space model of in-orbit calibration was established. Through studying on the observable value of each state with different motor conditions, the dynamic programming solution for in-orbit calibration was established. In-orbit calibration experiment was performed by adopting the method of speed and attitude matching referring to the main INS information. The experimental results show that the main parameters of stable targeting system can be calibrated, and the precision can reach 90 percent of the true value.