The experimental results show that the method can overcome the limitations of the critical angle between the object and reference beams, and omit the frequency aliasing.
实验结果表明，该方法可有效地突破最大物参角的限制，同时可以消除由于欠采样造成的频谱混叠现象。
2
The image processing method was introduced into the experiments. Flame height was acquired by the video frequency taken by the camera to give the parameters of lateral critical water flow rate.