车载远程制导导弹传递对准方法研究

Research on Transfer Alignment for Vehicle-launched Long-Range Guidance Missile

摘要:

针对陆基武器捷联惯导的快速精确初始对准问题,对车载武器在俯仰机动下的传递对准方法进行了研究。首先,以发射车定位定向系统作为主惯导,根据“速度+姿态阵”匹配传递对准原理,建立了子惯导姿态误差方程和速度误差方程；其次,基于可观测性矩阵奇异值分解的可观测度分析方法,分析了仅有俯仰机动时各状态变量的可观测度；最后,对所提出方法的对准精度进行仿真计算,其结果表明,状态变量的估计效果与可观测度分析一致,对准误差在10s内达到角分级。

Abstract:

To solve the problem of rapid initial alignment for vehicle-launched missile, a method of transfer alignment is studied in pitching maneuver. Firstly,according to the velocity plus attitude matrix matching principle, using Position and Azimuth Determining System(PADS) served as Master Inertial Navigation System, the mathematical model of transfer alignment is established. Secondly, the method of analyzing the degree of observability is introduced by means of singular value decomposition;Finally,the accuracy of proposed method is performed. Simulation results show that the estimation performance is consistent with observable degree;the Kalman filter can accomplish the task to the accuracy of minute lever in about 10s.