考虑舰船甲板弹性变形时的传递对准方法研究

传递对准时,帆船甲板的弹性变形会对装在甲板上的子惯导系统的对准精度产生一定的影响,因此需要对弹性变形进行建模,估计出弹性变形角并加以补偿来提高对准精度。首先对舰船甲板的弹性变形进行建模,并采用“速度＋角速率”匹配的对准方法进行卡尔曼滤波仿真,对安装误差角和弹性变形角进行了估计。仿真结果表明该方法在估计子惯导的安装误差角和弹性变形角时的精度可以满足使用要求的精度。

Study on Transfer Alignment with the Flexure of the Carrier

In transfer alignment,the dynamic flexure of the carrier can greatly degrade the alignment accuracy of the slave SINS,so it is necessary to model the flexure, estimate the distortion angle and compensate the error to improve the alignment accuracy.In this paper,the model of flexure of the carrier was established at first and the "velocity + angular velocity" match method was used to estimate both the static misalignment and the instantaneous dynamic distortion angle.The simulation result shows that this method can estimate the static misalignment and the instantaneous dynamic distortion angle effectively and satisfy the requirements.