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In this paper, the three-dimensional photogrammetry is introduced in the tidal bore height observation of Yanguan station for the thread-shape bore near the Qiantang River estuary. The three-dimensional scene of the tidal bore is restored by remote control and post-solution. The measurement of tidal bore’s height in three-dimensional environment is realized, and the auxiliary measurement of tidal bore’s upper bound, the foot line, the tidal curve and other vector data are extracted. The accuracy of the measurement is compared with the result of the tidal bore height measured by the Water gauge observations on the same station. The results show that not only the tidal bore’s shape can be captured but also the tidal bore’s height can be quantitatively calculated by three-dimensional photogrammetry. The three-dimensional photogrammetry can be used to quantitatively observe the tidal bore’s height in Qiantang River Estuary and the measurement accuracy is reliable.

Experimental study of three-dimensional photogrammetry technique in the observation of qiantang tidal bore’s height