Infrared and Laser Engineering, Volume. 51, Issue 5, 20210406(2022)
Research progress of absolute distance measurement methods based on tunable laser frequency sweeping interference
Fig. 1. Schematic of laser ranging of frequency sweeping interferometer
Fig. 2. Schematic diagram of calculating the interference signal phase difference. (a) Ideal linear frequency sweeping; (b) Actual nonlinear frequency sweeping
Fig. 4. VCSEL frequency sweeping ranging system based on PLL control[33]
Fig. 5. Nonlinear frequency sweeping compensation system based on Hilbert transform[37]
Fig. 6. Resampling frequency sweeping interferometry ranging based on hardware[40]
Fig. 7. Compensation of non-linear frequency sweeping based on F-P cavity and M-Z interferometer[44]
Fig. 9. Frequency sweeping ranging system based on double swept and gas chamber calibration[60]
Fig. 10. Double swept interferometric ranging based on four wave mixing[63]
Fig. 11. Frequency sweeping ranging system based on Doppler velocimeter[66]
Fig. 12. FSI system for suppressing Doppler amplification dynamic error[77]
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Luming Song, Fumin Zhang, Dong Sun, Hongyi Lin, Xiaohua Huang, Miao Yu, Qian Zhang. Research progress of absolute distance measurement methods based on tunable laser frequency sweeping interference[J]. Infrared and Laser Engineering, 2022, 51(5): 20210406
Category: Photoelectric measurement
Received: Jun. 15, 2021
Accepted: --
Published Online: Jun. 14, 2022
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