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Infrared and Laser Engineering, Volume. 50, Issue 6, 20211032(2021)

ICESat-2 ATL03 data preprocessing and correction method

Xiangying E1, Guangyao Dai1, and Songhua Wu1,2,3,4、*
Author Affiliations
  • 1College of Marine Technology, Faculty of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
  • 2Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266100, China
  • 3Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266100, China
  • 4Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
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    AbstractGet PDF(in Chinese)
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    Flow chart of ATLAS/ICESAT-2 data preprocessing and calibration

    Fig. 1. Flow chart of ATLAS/ICESAT-2 data preprocessing and calibration

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    (a) Photon distribution from sea ice surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

    Fig. 2. (a) Photon distribution from sea ice surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

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    (a) Photon distribution from ocean surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

    Fig. 3. (a) Photon distribution from ocean surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

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    (a) Photon distribution from land surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

    Fig. 4. (a) Photon distribution from land surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

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    (a) Photon distribution from desert surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

    Fig. 5. (a) Photon distribution from desert surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

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    Impulse response curves of six beams, in which the green curve is the impulse response function under the beam

    Fig. 6. Impulse response curves of six beams, in which the green curve is the impulse response function under the beam

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    Impulse response of six beams

    Fig. 7. Impulse response of six beams

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    Location of marine data used in this paper

    Fig. 8. Location of marine data used in this paper

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    (a) Photon distribution from ocean surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

    Fig. 9. (a) Photon distribution from ocean surface (Height of each received photon, relative to the WGS-84 ellipsoid); (b) The photons vertical profile distribution, x-axis is normalized photon counts per bin and y-axis is altitude in meter. The altitude of peak surface return is set to 0 meter in (b)

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    (a)-(f)：Calibration results were obtained by using impulse response models under six beams, where the black curve represents the observed ocean profile, the blue curve represents the impulse response model, and the red curve represents the correction results

    Fig. 10. (a)-(f)：Calibration results were obtained by using impulse response models under six beams, where the black curve represents the observed ocean profile, the blue curve represents the impulse response model, and the red curve represents the correction results

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    The correction results of the observed ocean profile, where the black curve represents the observed ocean profile and the other color curve represents the deconvolution results of different beams

    Fig. 11. The correction results of the observed ocean profile, where the black curve represents the observed ocean profile and the other color curve represents the deconvolution results of different beams

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    • Table 1. Configuration parameters of ATLAS/ICESat-2[2]

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      Table 1. Configuration parameters of ATLAS/ICESat-2[2]

      ParametersValuesParametersValues
      Orbit inclination and coverage92°；88°S~88°NFootprint size/m~17
      Altitude/km500Along-track separation/m~0.7
      Track repeat period/day91Telescope diameter/m0.8
      Nominal duration of mission/year3Number of beams6 organized in 3 pairs
      Laser wavelength/nm532Distance with a pair/m90
      Transmitted pulse width/ns1.5Distance between beam pairs/km~3.3
      Pulse repetition rate/kHz10Beam energy per pulse/μJ175±17，45±5
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    Xiangying E, Guangyao Dai, Songhua Wu. ICESat-2 ATL03 data preprocessing and correction method[J]. Infrared and Laser Engineering, 2021, 50(6): 20211032

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    Paper Information

    Category: Special issue-Ocean lidar remote sensing $ Algorithm

    Received: May. 9, 2021

    Accepted: --

    Published Online: Aug. 19, 2021

    The Author Email: Wu Songhua (wush@ouc.edu.cn)

    DOI:10.3788/IRLA20211032

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology