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基于条纹原理的阵列探测体制激光成像雷达由于其独特的技术优势在激光测绘中具有潜在的应用。介绍了“扫帚”扫描结合条纹原理阵列探测体制激光雷达的仿真及飞行实验研究结果。首先介绍新体制激光雷达仿真平台的建立及典型的仿真结果。利用该仿真平台可指导新体制激光雷达的设计,并对机载飞行实验参数的设定进行成像效果仿真,仿真的距离测量精度为0.5 m。最后开展了新体制激光雷达机载飞行实验,给出了典型地区的原始条纹图像及经过数据处理后的点云图。新体制激光雷达外场实验结果的测距精度优于1 m,机载飞行实验测距精度结果与仿真分析结果一致,验证了该仿真系统的正确性。通过与实际被动光学相机成像图像进行比较,验证了新体制激光雷达在航空测绘等方面的技术可行性。
Array detection system based on fringe principle Laser imaging radar has potential applications in laser mapping due to its unique technical advantages. The simulation and flight experimental results of laser radar with “broom” scanning combined with stripe principle array detection system are introduced. First, the establishment of the new system of laser radar simulation platform and typical simulation results are introduced. The simulation platform can be used to guide the design of laser LIDAR system and to simulate the imaging results of the experimental parameters of airborne flight. The accuracy of distance measurement is 0.5 m. Finally, a new system of laser radar airborne flight experiments were carried out. The original streak images of typical areas and the point cloud images after data processing were given. The accuracy of the new system lidar field test results is better than 1 m, and the result of the airborne flight test ranging accuracy is consistent with that of the simulation analysis, which verifies the correctness of the simulation system. Compared with the actual passive optical camera imaging images, the feasibility of the new system lidar in aerial mapping and other aspects is verified.