车载旋转调制捷联惯导系统最优对准技术

摘要

为进一步提高车载捷联惯导系统的定位定向精度,提高无依托发射的射击精度,对最优对准技术进行研究.将旋转调制技术引入车载捷联惯导系统,并讨论车载旋转调制式捷联惯导系统的最优对准方案,利用增加的旋转机构周期性的旋转,来抑制惯导系统在导航过程中部分常值误差和随机误差,提高系统在初始对准过程中的可观测性和可观测度,从而提高定位精度及方位对准精度.研究结果表明:连续方位旋转对准精度及对准速度均明显优于传统的多位置对准,具有较强的理论意义与实用价值.%For further improving the orientation accuracy of vehicle mounted SINS and unsupported launch accuracy, research on optimum alignment technology. Use rotation-modulating technology into vehicle mounted SINS, and discuss optimal alignment scheme of vehicle mounted rotation-modulating SINS. Use added periodic rotation of rotation system to restrain part of regular value error and random error of SINS in navigation process, improve observability and degree of observability in system initial process, then improve position accuracy and azimuth alignment accuracy. The research results show that the continuous azimuth rotation alignment accuracy and alignment velocity is significantly better than traditional multi-position alignment, with strong theory meaning and application value.