Hongyu He, Jianfeng Sun, Zhiyong Lu, Haisheng Cong, Ronglei Han, Weijie Ren, Longkun Zhang, Chaoyang Li, Yuxin Jiang. Outdoor Experiments of Phase-Shift Laser Range Finder Technique Based on Optical Carrier Phase Modulation[J]. Chinese Journal of Lasers, 2021, 48(24): 2404001
- Chinese Journal of Lasers
- Vol. 48, Issue 24, 2404001 (2021)
Fig. 1. Block diagram of phase-shift laser range and velocity measurement finder based on optical carrier phase modulation
Fig. 2. Spectral peak of Sout(γ) varying with γ and its first order Fourier approximate when Am=Vπ/2, φr=0
Fig. 3. Acquired output signal of BD and driven signal of PM. (a) Output signal of BD; (b) driven signal of PM; (c)(d) corresponding enlarged views
Fig. 4. First order Fourier fit of P(γ)
Fig. 5. Calculated P(kπ/5), the model curve estimated by least square method and the calculated maximum obtained by the model
Fig. 6. Spectrum of output signal and the product signal. (a) Spectrum of the output signal of BD; (b) spectrum of Sout(γ) when γ=γmax
Fig. 7. Results of measuring static target at the distance of 75.5 m. (a) Measured distance; (b) measured velocity
Fig. 8. Results of measuring moving target (a pedestrian) at the distance of 71.5 m. (a) Measured distance; (b) measured velocity
Fig. 9. Photograph of the system looking at the sun directly
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Table 1. Measured distance of different targets unit: m
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Table 2. RMS of noise of the system under different background light
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