POS数据用于双介质水下地形摄影测量的研究

Analysis at underwater topographic two-media photogrammetry with POS data

本文以双介质摄影测量的基本公式为基础、海水为介质,利用POS数据进行双介质水下地形摄影测量研究。文中介绍了机载POS系统及双介质摄影测量基本公式,论述了海水折射率和由折射引起的高程改正系数的求解,提出了双介质相对定向和直接定向的计算方法,最后用模拟数据进行验证。

An analysis at underwater topographic two-media photogrammetry based on the formula of two-media photogrammetry and seawater as medium from POS data was presented. In this paper, four major steps were involved. First, an introduction of the airborne POS system and the formula of two-media photogrammetry were expressed. In the following step, algorithms for refractive index of sea water and elevation correction coefficient caused that index were discussed. Then, methods for relative and direct orientation of twomedia photogrammetry were developed based on the second step. Finally, validation and analysis were processed.