条纹管成像激光雷达距离模型的研究

在基于对STIL系统成像原理分析的基础上,对实际目标的相对距离与CCD目标像距离之间的关系进行了理论研究,得出了两者近线性的关系,并依据此线性关系构建出了距离计算模型.搭建了实验平台,对模型中所需的2个重要参数静态基准线的位置和扫描速度分别进行了测定,验证了距离模型可以采用近似线性处理的正确性,基于此实验数据重新修正了距离模型.

Research of Distance Mathematical Modeling for Streak Tube Imaging Lidar

The distance mathematical modeling is the foundation of streak tube imaging lidar (STIL) system. Based on the STIL imaging principle and the experimental observation, the relation of target relative distance to the CCD image distance was theoretically analyzed. The analyzed result shows that the nonlinear relative deviation between target distance and image distance is very small. That means the target distance and CCD image distance present an approximately linear relationship, so the distance mathematical modeling could be processed linearly. A hardware platform was built and two crucial parameters of scanning velocity and position of static reference line were ascertained by measurement. Based on the above, the distance model for STIL system was built and its validity has been verified.