基于滑动窗的GPS位置辅助动基座粗对准方法

In-Motion Coarse Alignment Method of GPS Positon Assisted Based on Sliding Window

针对传统的GPS位置信息辅助动基座粗对准方法,对准精度易受仪表累积误差和载体转向的影响,提出了一种基于滑动窗的GPS位置辅助动基座粗对准方法,削弱了仪表累积误差的影响,同时抑制了因载体转向引起的航向角对准误差的波动,提高了粗对准精度。仿真结果表明,该方法较传统方法在水平姿态角上精度相当,在航向角上对准精度有明显优势,性能更优。

For the traditional coarse alignment method of moving base based on GPS position information assistance,the alignment accuracy is easily affected by the cumulative error of the instrument and the steering of the carrier.An in motion coarse alignment method of GPS position assisted based on the sliding window is proposed,which weakens the effect of the cumulative error of the instrument,and suppresses the fluctuation of the heading angle alignment error caused by the carrier turning at the same time and improves coarse alignment accuracy.The simulation results show that this method is comparable to the traditional method in horizontal attitude angle,and has obvious advantages in heading angle alignment and better performance.