捷联光电设备瞄准线校准技术

Aiming Line Calibration Technique of Strapdown Photoelectric Equipment

针对传统光电设备误差较大的问题,基于捷联式光电设备,提出了地面静基座校准和空中动态校准2种标定方法。地面静基座校准法根据特定位置靶标的观测数据及空间变换关系,推导了广角光电系统的等效测量关系;空中动态校准法利用主子惯导传递对准后的姿态阵推导。仿真结果证明:地面静基座标定方法精度高于空中动态校准方法,而空中动态校准则计算简单,校准方便。这2种标定方法都适用于平台式光电设备,可改善其简单标定精度的不足。

Aiming at the error of traditional photoelectric equipment, based on strapdown photoelectric equipment, put forwards two calibration methods including ground static base calibration and air dynamic calibration. According to observation data and space transformation relationship of specific position target, ground static base calibration method deduces the equivalent measurement relationship of wide scope devices. The air dynamic calibration deduces by using attitude matrix of host-slave INS transfer after alignment. The simulation results show： ground static base calibration methods is more precise than air dynamic calibration method, but air dynamic calibration method has advantages of easy calculation and calibration. The two calibration methods both can be used in platform photoelectric equipment and they can improve precision of simple calibration.