9 June 2014 A calibration method of the multi-channel imaging lidar
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We design a kind of imaging LiDAR with sixteen channels, which consists of a fiber laser source, dual scanning galvanometers, range measurement circuits and information processing circuits etc. The image LiDAR provides sixteen range measurements for one laser shot and the distance accuracy of each channel is about 4cm. This paper provides a calibrate method to correct point cloud images captured with the multi-channel LiDAR. The method needs to construct different slanted planes to cover the imaging field, and establish precise plane equations in the known ground coordinates, then fit planes with point clouds data and calculate correction parameters of all channels through the error model. The image accuracy is better than 5cm processed by this calibration method.
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Weiming Xu, Weiming Xu, Jun Liu, Jun Liu, Rong Shu, Rong Shu, "A calibration method of the multi-channel imaging lidar", Proc. SPIE 9080, Laser Radar Technology and Applications XIX; and Atmospheric Propagation XI, 90800V (9 June 2014); doi: 10.1117/12.2049678; https://doi.org/10.1117/12.2049678

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