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介绍了一种无海面控制点的立体摄影海浪测量方法,给出了其数学模型和相关算法.文中利用海浪特性,基于最小二乘法和海浪波面理论,给出了一种新的外方位元素定标方式.与传统的立体摄影定标方式相比,该定标方式充分利用了平均海平面的性质,既避免了海面控制点的需求,又使测量数据更为直观,同时还为基于运动平台的立体摄影海浪测量技术的发展提供了理论依据.实验室实验表明基于本文发展的立体摄影测量系统精度较高,可以用于海面微尺度波的测量;现场实验表明基于本文发展的立体摄影测量系统测量面积可达10~4 m~2量级,是一种有效的大尺度海浪测量手段.
This paper introduces a method of sea level measurement without sea surface control points and presents its mathematical model and related algorithms. Based on the characteristics of sea waves, based on the least square method and wave surface theory, a new extrinsic element is given Compared with the traditional stereo photography calibration method, this calibration method takes full advantage of the average sea level nature, which not only avoids the demand of the sea control point, but also makes the measurement data more intuitive, and also based on the movement platform Which provides a theoretical basis for the development of stereo photography sea wave measurement technology.Laboratory experiments show that the stereo photography measurement system developed based on this paper has high accuracy and can be used for the measurement of sea surface micro-scale waves.The field experiments show that the stereo photography measurement system Measuring area up to 10 ~ 4 m ~ 2 orders of magnitude, is an effective measure of large-scale wave.