5.Our experiments show that the photogrammetry with digital camera has a better precision and the large scale topographic map and orthograph can be produced with it.
试验证明利用数码相机进行摄影测量精度很,能够用来测制大比尺地形和正射影像。
6.This includes mainly the technique of the sealoor topographic survey, the technique of the seafloor mophological survey and the technique of the sea subbottom profile survey etc.