Abstract
We have decided to draw a contour map of the waves on the other from National Disaster Prevention Scientific and Technical Center. We photographed the waves in following two ways from planes simultaneously, with the cameras equipped with synchronous shutter mechanism.1. Successive stereophotographs are taken, so that the sea shore and oil towers in the sea can be imaged in a stereomodel and some reference points can be furnished for the facilities of the absolute orientations and the plotting works.2. Under a basis of stereoscopic Observation, successive stereophotographs are taken so that a datum plane of 0m can be found by the numerical method and then the wave map can be plotted.
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