一种基于全站仪的飞机热像仪原位校正方法

In-situ Calibration Method of Aircraft Thermal Imager based on Electric Total Station

通过在飞机前后架设反射棱镜作为基准点,利用全站仪高精度的测量能力,建立全站仪的坐标系。分别观测飞机上的理论基准点,利用飞机坐标系下理论点的坐标,使用开发的专用软件计算出全站仪坐标系和飞机坐标系的转换矩阵,筛选出误差最小的转换矩阵后,将热像仪理论校正点代入计算即可得到全站仪坐标系下该点的坐标,进而通过全站仪找到该点的实际位置,实现飞机在任意停机状态时热像仪的原位校正。

The coordinate system of the electric total station is based on the reflecting prisms behind and in front of the plane as datum points.Observe theoretical datum points on the aircraft respectively.The data is used to calculate the transfer matrix between the coordinate system of the electric total station and the coordinate system of the plane by software with the theoretical coordinates at the coordinate system of the plane.Then select the transfer matrix with the smallest error.Put the theoretical correction point of the thermal imager into calculation to get the coordinate in the coordinate system of the electric total station.Finally use the electric total station find the physical location of the theoretical correction point of the thermal imager to realize the in-situ calibration of the aircraft in any shut-down state.