Lu Li, Chenbo Xie, Kunming Xing, Bangxin Wang, Ming Zhao, Liangliang Cheng. Optical-mechanical system design, installation and performance test of lidar with small-field and high-repetition frequency[J]. Infrared and Laser Engineering, 2021, 50(12): 20210046
- Infrared and Laser Engineering
- Vol. 50, Issue 12, 20210046 (2021)
Fig. 1. Schematic diagram of lidar system structure with small-field of view and high-repetition frequency
Fig. 2. Light path diagram of optical-mechanical system of the transmitting unit
Fig. 3. Relation curve between incident angle and divergence angle after beam expansion
Fig. 4. Optical-mechanical structure of transmitting unit
Fig. 5. Light path diagram of optical-mechanical system of the receiving and aft-optical unit
Fig. 6. Light spot on the target surface of the detector under the field of view of 0.14 mrad (half angle)
Fig. 7. Diffuse spots (a) and energy concentration (b) of telescope system under the field of view of 0.14 mrad (half angle)
Fig. 8. Eccentricity(a) and radius(b) of diffuse spot of the telescope system under different fields of view
Fig. 9. Optical-mechanical structure of the receiving and aft optical unit
Fig. 10. Lidar effective payload with small-field of view and high-repetition frequency
Fig. 11. Adjustment of optical-mechanical structure (a) and detection optical path of divergence angle (b) in transmitting unit
Fig. 12. Detection (a) and results (b) of the wave aberration of telescope system
Fig. 13. Adjustment of optical-mechanical structure of receiving and aft optical units
Fig. 14. Original signal detected at 23:13 on October 11, 2020
Fig. 15. Ratio of echo signal of S channel and P channel
Fig. 16. Profile of extinction coefficient (a) and depolarization ratio (b) detected at 12:00 on November detected at 00:24 on October 12, 2020
Fig. 17. Profile of extinction coefficient (a) and depolarization ratio (b) detected at 12:00 on November 04, 2020
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Table 1. System parameters of lidar with small-field and high-repetition frequency
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Table 2. Optical parameters of telescope of lidar with miniaturization and high-repetition frequency
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