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Acta Optica Sinica, Volume. 41, Issue 14, 1428003(2021)

Influence of Channel Center Wavelength Shift of the Hyperspectral Remote Sensor on Red Edge Spectra

Yaqiong Zhang1, Wenjuan Zhang2, Zhengchao Chen2, and Haiwei Li3、*
Author Affiliations
  • 1Key Laboratory of Satellite Remote Sensing for National Environmental Protection, Center for Satellite Application on Ecology and Environment, Ministry of Ecology and Environment, Beijing 100094, China
  • 2Airborne Remote Sensing Center, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
  • 3Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, Shaanxi 710119, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (24)
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    Figures & Tables(9)
    Vegetation reflectance from ENVI spectral library

    Fig. 1. Vegetation reflectance from ENVI spectral library

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    TOA radiance spectra of red－edge region simulated by Modtran (e.g., Tarweed)

    Fig. 2. TOA radiance spectra of red－edge region simulated by Modtran (e.g., Tarweed)

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    Spectral response functions of some channels in the red－edge region of Hyperion based on Gaussian function simulation (e.g., without center wavelength shift)

    Fig. 3. Spectral response functions of some channels in the red－edge region of Hyperion based on Gaussian function simulation (e.g., without center wavelength shift)

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    Radiance spectra of red－edge region corresponding to different center wavelength shift values (e.g.，Tarweed)

    Fig. 4. Radiance spectra of red－edge region corresponding to different center wavelength shift values (e.g.，Tarweed)

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    Reflectance spectra of red－edge region with different center wavelength shift values (e.g., tarweed)

    Fig. 5. Reflectance spectra of red－edge region with different center wavelength shift values (e.g., tarweed)

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    Relationship between channel center wavelength shift and vegetation red edge shift

    Fig. 6. Relationship between channel center wavelength shift and vegetation red edge shift

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    • Table 1. Main input parameters of Modtran

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      Table 1. Main input parameters of Modtran

      ParameterValue
      Atmosphere modelMid－latitude summer pattern
      CO2 volumetric mixing radio /10－6390
      Aerosol modelRURAL
      Surface altitude /km0.1
      Sensor altitude /km1000
      View zenith /(°)180
      Relative solar azimuth /(°)90
      Solar zenith /(°)45

    • Table 2. Spectral parameters of the channels in the red－edge region of Hyperion sensor

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      Table 2. Spectral parameters of the channels in the red－edge region of Hyperion sensor

      Channel numberCenter wavelength /nmFWHM /nmChannel numberCenter wavelength /nmFWHM /nm
      25671.0211.387132742.2510.6933
      26681.210.334933752.4310.7058
      27691.3710.390934762.610.7276
      28701.5510.459135772.7810.7907
      29711.7210.532236782.9510.8833
      30721.910.600437793.1310.9938
      31732.0710.6562   

    • Table 3. Averaged REP errors of different vegetation types caused by center wavelength shift

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      Table 3. Averaged REP errors of different vegetation types caused by center wavelength shift

      Channel center wavelength shift value /nmAveraged REP error /nmChannel center wavelength shift value /nmAveraged REP error /nm
      0.50－0.35－0.500.39
      1.00－0.75－1.000.87
      1.50－1.16－1.501.30
      2.00－1.59－2.001.82
      2.50－2.08－2.502.28
      3.00－2.60－3.002.87
      3.50－3.22－3.503.42
      4.00－3.82－4.004.03
      4.50－4.65－4.504.65
      5.00－5.52－5.005.26
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    Yaqiong Zhang, Wenjuan Zhang, Zhengchao Chen, Haiwei Li. Influence of Channel Center Wavelength Shift of the Hyperspectral Remote Sensor on Red Edge Spectra[J]. Acta Optica Sinica, 2021, 41(14): 1428003

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Dec. 9, 2020

    Accepted: Feb. 22, 2021

    Published Online: Jul. 12, 2021

    The Author Email: Li Haiwei (lihaiwei@opt.ac.cn)

    DOI:10.3788/AOS202141.1428003

    Topics

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