One-Bit Sampling Coherent Doppler Wind Lidar

Fig. 3. Continuous observation results by the hybrid CDWL system. (a)(c)(e)(g) Observation results of CNR, radial wind speed, spectrum width and spectrum skewness in CH 1; (b)(d)(f)(h) observation results of CNR, radial wind speed, spectrum width and spectrum skewness in CH 2

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Fig. 4. Comparison experiment results. (a)(b) CNR and ΔR_CN in the near-field and far-field; (c)(d) radial wind velocity and ΔV in the near-field and far-field; (e) visibility

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Table 1. Key parameters of the hybrid CDWL

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Table 1. Key parameters of the hybrid CDWL

Parameter	Value
Wavelength /nm	1548
Pulse energy /µJ	100
Pulse duration /ns	200
Pulse repetition frequency /kHz	10
Diameter of telescope /mm	80
Temporal resolution /s	1
Spatial resolution /m	30
Sampling rate /（MSa/s）	500
Maximum range /km	15

Table 2. Data amount and power of sampling circuit
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Table 2. Data amount and power of sampling circuit
Channel Data rate /（Gbit/s） Power consumption /W
CH 1 0.5 0.08
CH 2 8 3.60

Table 3. Simulated characteristics of the power spectrum of the hybrid CDWL system

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Table 3. Simulated characteristics of the power spectrum of the hybrid CDWL system

Parameter	CH 1		CH 2
Parameter	Near- field	Far- field	Near- field	Far- field
CNR /dB	-3.830	-35.168	0.020	-34.206
Radial wind velocity /（m/s）	-0.017	0.278	0.013	0.634
Spectrum width /MHz	5.410	3.493	5.373	3.585
Spectrum skewness	0.003	0.009	0.002	0.013

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Kenan Wu, Jiadong Hu, Haiyun Xia, Jiawei Qiu, Jinlong Yuan, Tianwen Wei. One-Bit Sampling Coherent Doppler Wind Lidar[J]. Acta Optica Sinica, 2024, 44(16): 1636001

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