【摘要】 采用一种非接触光学方法——Fourier变换光栅法,对受外激励的连续变化的水表面波进行实验测量,获得变形光栅图像,通过对变形光栅图像进行反演计算,获得连续变 化的水表面波振幅,是定量测量变化快的非定常运动的微幅波的一种全场测量手段。更多还原

【Abstract】 A contactless optical technique, Fourier transform grid method with integration of a digital image processing technique is applied to measure vibration amplitudes of the water surface wave generated in a vertical oscillating apparatus. It can obtain the wave height information corresponding to each pixel point with a high precision. The method offers a means for measuring the micro vibration amplitudes of water surface waves.更多还原