Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar
"> Figure 1
<p>Wind profile Lidar system.</p> "> Figure 2
<p>Schematic diagram of eight-beam coherent wind measurement Lidar.</p> "> Figure 3
<p>Data processing flowchart.</p> "> Figure 4
<p>Power spectrum of the raw data.</p> "> Figure 5
<p>The method of calculating the CNR of the range gate division of the Lidar.</p> "> Figure 6
<p>Beam frequency shift contrast diagram.</p> "> Figure 7
<p>Wind profiles obtained for two consecutive days in the vertical direction.</p> "> Figure 8
<p>Profiles of the horizontal wind speed and direction from 00:00 to 01:30 on 6 March 2021.</p> "> Figure 9
<p>Comparisons of the calculation results of the eight-beam check with the three-beam and five-beam wind measurements.</p> "> Figure 10
<p>Variation in the absolute deviation with height between the different beam measurements.</p> "> Figure 11
<p>The relationship between the CNR and the detection range.</p> ">
Abstract
:1. Introduction
2. Materials and Methods
2.1. Coherent Wind Measurement Lidar System of Wind Profile
2.2. Scanning Mode
2.3. Sample Collection and Data Processing Scheme
2.4. Range Gate Division of the Sampling Echo Signal
2.5. Methods of Wind Field Retrieval
2.6. Calculation of the Wind Profile Lidar’s Carrier-to-Noise Ratio
3. Results and Discussion
3.1. Error Analysis of the Three-Dimensional Wind Field Measurements
3.2. Results of the Three-Dimensional Wind Field Measurements
3.3. Contrast Observations
3.4. Calculation of the Wind Profile Lidar’s Carrier-to-Noise Ratio
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Component | Qualification | Specification |
---|---|---|
Transmitter | Operating wavelength | 1550 nm |
Pulse energy | 145 μJ | |
Pulse repetition | 10 KHz | |
Pulse width | 200 ns | |
Transceiver | Laser mode | Pulse |
Scan mode | Conical | |
Elevation angle | 60° | |
Start angle | 0° | |
Step angle | 45° | |
Data-Acquisition | Sampling frequency | 1 GHz |
Sampling points | 150 | |
Range resolution | 30 m | |
Blind range | 30 m | |
Gate number | 128 |
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Zhao, Y.; Zhang, X.; Zhang, Y.; Ding, J.; Wang, K.; Gao, Y.; Su, R.; Fang, J. Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar. Remote Sens. 2021, 13, 3549. https://doi.org/10.3390/rs13183549
Zhao Y, Zhang X, Zhang Y, Ding J, Wang K, Gao Y, Su R, Fang J. Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar. Remote Sensing. 2021; 13(18):3549. https://doi.org/10.3390/rs13183549
Chicago/Turabian StyleZhao, Yuefeng, Xiaojie Zhang, Yurong Zhang, Jinxin Ding, Kun Wang, Yuhou Gao, Runsong Su, and Jing Fang. 2021. "Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar" Remote Sensing 13, no. 18: 3549. https://doi.org/10.3390/rs13183549