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提出一种基于声光扫描技术实现三维视频激光雷达系统,克服了基于传统扫描方式的三维成像激光雷达应用中所面临的成像速度慢、体积大、质量大等问题。采用二维声光扫描技术,大大提高了扫描速度;同时,采用高精度的时间差检测芯片,精确测量激光脉冲飞行时间,从而获得高精度的距离值,实现高精度的三维视频成像。详细描述了系统的原理、组成部分以及实验结果。在图像分辨率为63pixel×63pixel时,该系统三维成像速度达到25frame/s,实现视频三维成像,能够满足对成像速度要求较高的特殊场合的需求。
A three-dimensional video lidar system based on acousto-optic scanning technology is proposed, which overcomes the problems of slow imaging speed, large volume and high quality in the application of three-dimensional imaging lidar based on traditional scanning methods. Using two-dimensional acousto-optic scanning technology, greatly improving the scanning speed; the same time, the use of high-precision time difference detection chip, accurate measurement of laser pulse flight time to obtain high-precision distance values, high-precision three-dimensional video imaging. Described in detail the system principle, components and experimental results. When the image resolution is 63pixel × 63pixel, the 3D imaging speed of the system reaches 25frame / s, which realizes the 3D imaging of the video, which can meet the demand of the special occasions that require high imaging speed.