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基于低速预先采集并记录调制散斑场、对毛玻璃高速高精度定位寻址的方式,提出一种方法解决了参考臂面阵CCD的图像采集速度对关联成像速度限制的问题。基于该方法搭建了可预置强度关联激光三维成像雷达实验系统。采用每次平移一个系统所决定的散斑大小就能保证两次采样独立的预置运行轨迹方案,以散斑场的相关性系统为评价函数,实验验证了该预置方案准确性高、重复性好。同时,完成了预置速度为2kHz的强度关联激光三维成像演示实验,其成像结果与实时采样速度为100Hz的强度关联激光三维成像结果相当,证明了该技术的有效性。
Based on the low-speed pre-acquisition and recording of modulated speckle fields and the high-speed and high-precision positioning of the ground glass, a method is proposed to solve the problem that the speed of image acquisition of reference arm array CCD limits the associated imaging speed. Based on this method, an experimental system of 3D intensity imaging laser with presettable intensity correlation is set up. Using the speckle size determined by shifting one system each time, we can ensure the program of two independent pre-set trajectories. With the correlation system of speckle field as the evaluation function, the experimental results show that the proposed scheme has high accuracy and repeatability Good sex. At the same time, the experiment of three-dimensional imaging of intensity-related laser with preset speed of 2kHz has been completed, and the imaging result is equivalent to that of 3D laser with the intensity of real-time sampling speed of 100Hz, which proves the effectiveness of the technique.