Accuracy verification of terrain under forest estimated from ICESat-2/ATLAS data

Jiapeng Huang; Yanqiu Xing; Lei Qin; Tingting Xia

doi:10.3788/IRLA20200237

Infrared and Laser Engineering, Volume. 49, Issue 11, 20200237(2020)

Accuracy verification of terrain under forest estimated from ICESat-2/ATLAS data

Jiapeng Huang1... Yanqiu Xing1, Lei Qin1 and Tingting Xia2 |Show fewer author(s)

Author Affiliations

¹Centre for Forest Operations and Environment, Northeast Forestry University, Harbin 150000, China

²College of Mechanical and Eletrical Engineering, Northeast Forestry University, Harbin 150000, China

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Figures & Tables(10)

Fig. 1. Location of study area

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Fig. 2. Schematic of ATLAS data

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Fig. 3. Research flow chart

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Fig. 4. Schematic diagram of overlap between ATLAS data and G-LiHT data

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Fig. 5. Schematic diagram of ground elevation under forest by using ATLAS and G-LiHT data

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Fig. 6. Scatter diagram of ATLAS data and G-LiHT data under different laser types. (a) Weak beam; (b) Strong beam

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Fig. 7. Estimation accuracy of ATLAS data under different canopy height conditions. (a) Strong beam; (b) Weak beam

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Table 1.
ATLAS parameters used in the paper
研究使用的ATLAS参数

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Table 1.
ATLAS parameters used in the paper
研究使用的ATLAS参数

Parameters	Description of parameters	Source of parameters
lat_ph	Latitude of each received photon	ATL03/gtx/heights/lat_ph
lon_ph	Longitude of each received photon	ATL03/gtx/heights/lon_ph
h_ph	Height of each received photon	ATL03/gtx/heights/h_ph
geoid	Geoid height above WGS-84 reference ellipsoid	ATL03/gtx/geophys_corr/ geoid
segment_id	A 7 digit number identifiying the along-track geolocation segment number	ATL03/gtx/ geolocation/segment_id
ph_index_beg	Index (1-based) within the photon-rate data of the first photon within this segment	ATL03/gtx/geolocation/ ph_index_beg
classed_pc_flag	Land vegetation ATBD classification flag for each photon as either noise, ground, canopy, and top of canopy. 0=noise, 1=ground, 2=canopy, or 3=top of canopy	ATL08/gtx/ signal_photons/ classed_pc_flag
classed_pc_indx	Index (1-based) of the ATL08 classified signal photon from the start of the ATL03 geolocation segment specified on the ATL08 product at the photon rate in the corresponding parameter, ph_segment_id	ATL08/gtx/signal_photons/ classed_pc_indx
ph_segment_id	Segment ID of photons tracing back to specific 20 m segment_id on ATL03	ATL08/gtx/signal_photons/ ph_segment_id

Table 2.
Estimation accuracy statistics of ATLAS data under different laser types
不同激光类型条件下ATLAS数据反演精度统计
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Table 2.
Estimation accuracy statistics of ATLAS data under different laser types
不同激光类型条件下ATLAS数据反演精度统计
Different laser intensities types RMSE/m MAE/m R² ME/m
Weak beam 0.76 0.54 1.00 0.33
Strong beam 0.74 0.51 1.00 0.27
Mean of different laser intensities types 0.75 0.53 1.00 0.30

Table 3.
Estimation accuracy statistics of strong beam and weak beam data under different canopy heights
不同冠层高度条件下强、弱波束数据反演精度统计

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Table 3.
Estimation accuracy statistics of strong beam and weak beam data under different canopy heights
不同冠层高度条件下强、弱波束数据反演精度统计

Canopy heights/m	RMSE/m	MAE/m	R²	ME/m	N	pearson	spearman	kendall	Vegetation coverage
注：表格中数据分别为强波束数据/弱波束数据的精度统计数据
0-5	0.49/0.90	0.41/0.57	1.00/0.99	0.33/0.32	21.39%/20.48%	1.00/1.00	1.00/0.99	0.95/0.93	27%(28.5%)/25%(35.7%)
6-10	0.47/0.50	0.41/0.38	1.00/1.00	0.29/0.25	22.37%/24.34%	1.00/1.00	1.00/0.99	0.97/0.94	27%(33.0%)/66%(36.4%)
11-15	0.52/0.82	0.42/0.68	1.00/0.99	0.33/0.56	27.20%/33.01%	1.00/1.00	1.00/0.99	0.96/0.94	36%(30.4%)/66%(61.8%)
16-20	0.66/0.97	0.47/0.76	1.00/0.99	0.35/0.50	13.28%/11.57%	1.00/1.00	0.99/0.94	0.93/0.84	36%(50.0%)/66%(51.0%)
21-	1.25/0.66	0.99/0.58	0.98/0.98	0.77/0.41	15.76%/10.60%	0.99/1.00	0.84/0.68	0.67/0.52	36%(42.0%)/40%(30.9%)

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Jiapeng Huang, Yanqiu Xing, Lei Qin, Tingting Xia. Accuracy verification of terrain under forest estimated from ICESat-2/ATLAS data[J]. Infrared and Laser Engineering, 2020, 49(11): 20200237

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Paper Information

Category: Issue-Space-borne laser altimetry technology

Received: Jun. 9, 2020

Accepted: --

Published Online: Jan. 4, 2021

The Author Email:

DOI:10.3788/IRLA20200237

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. ATLAS parameters used in the paper研究使用的ATLAS参数

Table 1. ATLAS parameters used in the paper研究使用的ATLAS参数

Table 2. Estimation accuracy statistics of ATLAS data under different laser types不同激光类型条件下ATLAS数据反演精度统计

Table 2. Estimation accuracy statistics of ATLAS data under different laser types不同激光类型条件下ATLAS数据反演精度统计

Table 3. Estimation accuracy statistics of strong beam and weak beam data under different canopy heights不同冠层高度条件下强、弱波束数据反演精度统计

Table 3. Estimation accuracy statistics of strong beam and weak beam data under different canopy heights不同冠层高度条件下强、弱波束数据反演精度统计

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Table 1.
ATLAS parameters used in the paper
研究使用的ATLAS参数

Table 1.
ATLAS parameters used in the paper
研究使用的ATLAS参数

Table 2.
Estimation accuracy statistics of ATLAS data under different laser types
不同激光类型条件下ATLAS数据反演精度统计

Table 2.
Estimation accuracy statistics of ATLAS data under different laser types
不同激光类型条件下ATLAS数据反演精度统计

Table 3.
Estimation accuracy statistics of strong beam and weak beam data under different canopy heights
不同冠层高度条件下强、弱波束数据反演精度统计

Table 3.
Estimation accuracy statistics of strong beam and weak beam data under different canopy heights
不同冠层高度条件下强、弱波束数据反演精度统计