【作者】 叶光超； 樊荣伟； 李旭东； 董志伟； 陈兆东； 徐新瑞； 陈德应；

【Author】 Guangchao Ye;Rongwei Fan;Xudong Li;Zhiwei Dong;Zhaodong Chen;Xinrui Xu;Deying Chen;National Key Laboratory of Science and Technology on Tunable laser, Harbin Institute of Technology;

【机构】 哈尔滨工业大学可调谐激光技术国家级重点实验室；

【摘要】 线阵扫描成像激光雷达是一种基于整形脉冲激光发射和线阵探测器的主动成像雷达系统,它具有高精度,高重频,大门宽等主要特点。回波数据的处理算法作为激光雷达成像的关键环节之一对测距精度产生重要影响。常用的数据处理算法包括最大值提取法、质心权重法以及高斯峰值检测法。在激光发射功率10 W、工作频率1000 Hz、距离门宽1μs条件下,分别采用以上三种算法对相同回波数据进行处理。实验表明采用高斯峰值检测法可以获得最佳的测距精度(0.06 m),质心权重算法获得的距离精度略差(0.08m),最大值提取法获得的距离精度则明显降低(0.15 m)。因此采用高斯峰值检测法有利于提高线阵扫描成像激光雷达的测距精度。更多还原

【Abstract】 Linear array imaging lidar is an active imaging system with high range accuracy, high frequency and wide range gate, using pulsed laser transmitter and linear array detector to produce 3D range images. Data processing algorithm affects the range accuracy significantly. The data processing algorithm includes max gray level algorithm, centroid algorithm and Gaussian peak detection algorithm. The laser output power is 10 W, laser frequency is 1000 Hz and the range gate is 1μs. The same raw data was processed using different algorithms. The experimental result indicated that the depth image can reach the finest range accuracy of 0.06 m using Gaussian peak detection algorithm and the range accuracy using centroid algorithm and max gray level algorithm is 0.08 mand 0.15 m respectively. So, the range accuracy of linear array lidar system can be enhanced by using Gaussian peak detection algorithm.更多还原