舰载高速导弹SINS/GPS组合导航系统二次快速传递对准

Twice transfer alignments of SINS/GPS navigation systems of high-speed missiles carried on warships

基于惯性导航基本方程的精确表达式,采用二次传递对准的概念与方法,对舰载高速导弹SINS/GPS组合导航系统的动基座传递对准进行了研究。传递对准方案的设计充分利用了垂直发射的特点,将传递对准分为两次进行。第一次对准利用载舰的机动运动,快速完成航向对准,同时初步完成水平对准。第二次对准利用导弹垂直发射和大加速度的特点精确而快速地实现水平对准。仿真结果表明:第一次对准在30s内使航向失准角的估计误差减少到3.05′;在垂直加速度为20g的情况下,第二次传递对准在10s的时间内使东向和北向两个失准角都能得到快速的估计,误差分别为0.4′和0.465′。

Based on the precise expression of inertial navigation basic equation, and using the concept and method of twice transfer alignments, the transfer alignment of warships’ SINS/GPS navigation systems of high-speed missiles was investigated. The design of transfer alignment scheme takes advantage of vertically launching missiles, and the transfer alignment is divided into two phases. The first-phase transfer alignment rapidly finishes the azimuth alignment with the help of warship maneuver, and coarsely finishes horizontal alignment. The second-phase transfer alignment rapidly and precisely finishes the horizontal alignment with the help of vertically launching and big acceleration. Simulations show that the first-phase transfer alignment reduces the estimate error of azimuth misalignment angle to 3.05′in 30 s; and when the vertical acceleration equals to 20g, the second-phase transfer alignment reduces the estimate errors of east and north horizontal misalignment angles to 0.4′ and 0.465′ respectively in 10 s .