Yinxiao MIAO, Xingyu WANG, Hao ZHU, Chenxing BAO, Jiubin TAN. Model establishment and error correction of FMCW lidar[J]. Optics and Precision Engineering, 2023, 31(9): 1295

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- Optics and Precision Engineering
- Vol. 31, Issue 9, 1295 (2023)

Fig. 1. Optical system of FMCW lidar

Fig. 2. Schematic diagram of lidar coordinate systems

Fig. 3. Coordinate transformation relationship for specular reflection

Fig. 4. Experimental layout of error correction

Fig. 5. Sphere center and diameter by fitting point cloud

Fig. 6. Schematic diagram of ball center distance measurement error of laser tracker

Fig. 7. Sphere center distance measurement errors before and after error correction

Fig. 8. Sphere diameter measurement errors before and after error correction
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Table 1. Parameters of spatial transformation matrix
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Table 2. Error factors of four experiments
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Table 3. Measured distances between adjacent balls

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