整个校正过程有两个难点：1如何充分利用各个POS／DG参数准确计算像元地面实际坐标，这涉及到航空摄影测量学的知识；

There are tow problems in the procession of geometric correction: 1 how to compute out each pixel's coordinates by POS/DG parameters precisely; This is in the field of airborne photogrammetry.

youdao

整个校正过程有两个难点：1如何充分利用各个POS／DG参数准确计算像元地面实际坐标，这涉及到航空摄影测量学的知识；

There are tow problems in the procession of geometric correction: 1 how to compute out each pixel's coordinates by POS/DG parameters precisely; This is in the field of airborne photogrammetry.

youdao