运载器起竖过程中捷联惯组初始对准方法的研究

为了克服运载器在垂直发射时受阵风和振动等干扰产生的随机晃动,提出了一种新的自主式捷联惯测组合初始对准方法。该方法合理地利用了发射流程中捷联惯测组合所提供的信息,在不改变系统结构的条件下,改善了系统的可观测性。因此该方法缩短了初始对准时间,改善了方位对准精度。试验结果证明了该初始对准方法的正确性,具有较强的工程实用性。

Study on Initial Alignment Method of SIMU Using Launch Vehicle Erection Movement

To overcome random swinging disturbances of the wind and vibration in course of vertical launching,a new and independent initial alignment method of SIMU is presented in this paper.This method makes full use of the information that SIMU provided during the launch process,and improves observability of the system with the unchanged structure.The time of initial alignment is reduced greatly and the accuracy of azimuth alignment is improved.The experimental results show the validity and the practicability of the method in the engineering application.