• Laser & Optoelectronics Progress
  • Vol. 57, Issue 13, 131408 (2020)
Jiaqi Yao1、2、*, Xinming Tang1、2、**, Guoyuan Li2、3, Bo Ai1, Xiongdan Yang2、3, and Dongping Xie2、3
Author Affiliations
  • 1College of Geomrtics, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
  • 2Land Satellite Remote Sensing Application Center, Ministry of Natural Resources of China, Beijing 100048, China
  • 3School of Mapping and Geographical Science, Liaoning Technical University, Fuxin, Liaoning 123000, China
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    DOI: 10.3788/LOP57.131408 Cite this Article Set citation alerts
    Jiaqi Yao, Xinming Tang, Guoyuan Li, Bo Ai, Xiongdan Yang, Dongping Xie. Cloud Detection of Laser Altimetry Satellite ICESat-2 and the Related Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131408 Copy Citation Text show less
    Ground laser footprint distribution of laser payload on ICESat-2
    Fig. 1. Ground laser footprint distribution of laser payload on ICESat-2
    Schematic of laser pulse folding
    Fig. 2. Schematic of laser pulse folding
    Flow chart of ATL04 and ATL09 products
    Fig. 3. Flow chart of ATL04 and ATL09 products
    Sketch maps of some data in GOME lunar surface albedo data set. (a) January; (b) July
    Fig. 4. Sketch maps of some data in GOME lunar surface albedo data set. (a) January; (b) July
    Flow chart of making initial clear sky ASR data set
    Fig. 5. Flow chart of making initial clear sky ASR data set
    Flow chart of final clear sky ASR data set production
    Fig. 6. Flow chart of final clear sky ASR data set production
    Cloud detection flowchart based on ASR
    Fig. 7. Cloud detection flowchart based on ASR
    ParameterValue
    SpacecraftICESat-2
    Launch vehicleDelta II
    Launch locationVandenberg Air Force Base, California
    Nominal duration of mission /a3
    Orbital altitude /km500
    Inclination /(°)92
    Orbit typeNon-solar synchronization
    Orbital period /d91
    Launch date2018-09-15
    Wavelength /nm532
    Number of laser beams6
    Laser repetition frequency / kHz10
    Laser spot diameter /m~17
    Laser pulse energy /mJStrong beam: 0.12; weak beam: 0.04
    Laser spot spacing /kmDirection of flight: 0.09Side direction(two strong beams or two weak beams): 3.3Side direction(between strong beam and weak beam): 2.5
    Laser altimetry accuracy /m0.1
    Data collection modeSingle photon counting
    Table 1. Parameters of ICESat-2 satellite
    PQuality controlparameterDescription
    (0.8,1]5Cloudy with high confidence
    (0.6,0.8]4Cloudy with medium confidence
    (0.4,0.6]3Cloudy with low confidence
    (0.2,0.4]2Clear with low confidence
    (0,0.2]1Clear with medium confidence
    00Clear with high confidence
    Table 2. Quality control parameters of cloud
    Surface typeColumn_OD_ASR_QF
    No surface signal0
    Land1
    Sea ice2
    Land ice(antarctica,greenland)3
    Water4
    Table 3. Total columnar optical thickness output in Column_OD_ASR_QF dataset
    Jiaqi Yao, Xinming Tang, Guoyuan Li, Bo Ai, Xiongdan Yang, Dongping Xie. Cloud Detection of Laser Altimetry Satellite ICESat-2 and the Related Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131408
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