FOREST RESOURCES WANAGEMENT ›› 2018, Vol. 0 ›› Issue (4): 125-132.doi: 10.13466/j.cnki.lyzygl.2018.04.020
• Technical Application • Previous Articles Next Articles
WU Fayun1(), GAO Xianlian1, PAN Chao2, SUN Zhongqiu1, WANG Lidong2, LIU Yingchun1
Received:
2018-06-01
Revised:
2018-06-29
Online:
2018-08-28
Published:
2020-09-25
CLC Number:
WU Fayun, GAO Xianlian, PAN Chao, SUN Zhongqiu, WANG Lidong, LIU Yingchun. Design and Application of Forest Detecting Based on Airborne Large-Footprint LiDAR System[J]. FOREST RESOURCES WANAGEMENT, 2018, 0(4): 125-132.
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URL: http://www.lyzygl.com.cn/EN/10.13466/j.cnki.lyzygl.2018.04.020
Tab.1
Airborne large-footprint LiDAR technology index
设备 | 指标名称 | 设计值 | 实测值 |
---|---|---|---|
激光器 | 发射波长 | 1064 nm | 1064.1 nm |
能量@1 064 nm | 2 mJ | 2.03 mJ | |
发散角 | 5 mrad | X=5.06mrad; | |
Y=5.12mrad | |||
脉宽 | 1.5 ns | 1.57 ns | |
重频 | 40 Hz | 40 Hz | |
M2 | X≤3 | X=2.954 | |
Y≤3 | Y=2.736 | ||
望远镜 | 口径 | 100 mm | 100 mm |
视场角 | 6 mrad | 6 mrad | |
接收系统 | 滤光片带宽(FWHM) | 10 nm,透过率≥0.7 | 设计保证 |
探测器光敏面直径 | 0.8 mm | 设计保证 | |
探测器带宽 | ≥100 MHz | 112.5 MHz | |
探测器 | APD | 设计保证 | |
电子系统 | 采样率 | 1 GHz | 1 GHz |
Tab.5
Forest height accuracy evaluation of large-footprint LiDARm
大光斑号 | 大光斑估测值 | 小光斑估测值 | 差值 | 精度 |
---|---|---|---|---|
5798 | 15.31 | 13.20 | -2.11 | 0.84 |
5818 | 17.51 | 14.40 | -3.11 | 0.78 |
5838 | 19.31 | 21.90 | 2.59 | 0.88 |
5858 | 19.67 | 16.50 | -3.17 | 0.81 |
5878 | 17.22 | 15.30 | -1.92 | 0.87 |
5898 | 16.75 | 20.10 | 3.35 | 0.83 |
5918 | 17.67 | 16.05 | -1.62 | 0.90 |
5938 | 19.97 | 19.50 | -0.47 | 0.98 |
5958 | 19.21 | 22.50 | 3.29 | 0.85 |
5978 | 20.20 | 17.40 | -2.80 | 0.84 |
5998 | 14.12 | 16.20 | 2.08 | 0.87 |
6018 | 19.71 | 21.00 | 1.29 | 0.94 |
6038 | 19.54 | 16.35 | -3.19 | 0.80 |
6058 | 19.37 | 22.05 | 2.68 | 0.88 |
6078 | 24.26 | 25.95 | 1.69 | 0.93 |
6098 | 21.73 | 19.80 | -1.93 | 0.90 |
6118 | 24.14 | 26.25 | 2.11 | 0.92 |
6138 | 25.43 | 25.20 | -0.23 | 0.99 |
6158 | 23.31 | 26.70 | 3.39 | 0.87 |
6178 | 23.15 | 25.50 | 2.35 | 0.91 |
6198 | 24.50 | 24.00 | -0.50 | 0.98 |
6218 | 25.99 | 24.30 | -1.69 | 0.93 |
6238 | 24.97 | 27.30 | 2.33 | 0.91 |
6258 | 24.57 | 25.20 | 0.63 | 0.98 |
6278 | 25.50 | 24.60 | -0.90 | 0.96 |
6298 | 23.62 | 25.65 | 2.03 | 0.92 |
6318 | 25.25 | 28.50 | 3.25 | 0.89 |
6338 | 20.97 | 23.40 | 2.43 | 0.90 |
6358 | 18.78 | 15.90 | -2.88 | 0.82 |
6378 | 20.22 | 23.10 | 2.89 | 0.88 |
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