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Acta Optica Sinica, Volume. 43, Issue 12, 1228011(2023)

On-Orbit Geometric Calibration of Panchromatic Planar Array Sensor on GF4 Satellite Based on the Rational Polynomial Coefficient Model

Yingdong Pi1,2, Mi Wang1, Siheng Wang3、*, Huijie Zhao3, and Liang Zhao3
Author Affiliations
  • 1State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430072, Hubei, China
  • 2School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, Hubei, China
  • 3China Academy of Space Technology, Beijing 100094, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (20)
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    Figures & Tables(9)
    Principle of on-orbit geometric calibration based on RPC

    Fig. 1. Principle of on-orbit geometric calibration based on RPC

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    Flow of on-orbit geometric calibration based on RPC

    Fig. 2. Flow of on-orbit geometric calibration based on RPC

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    Viewing-angle of the CCD detector

    Fig. 3. Viewing-angle of the CCD detector

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    Calibration image and reference images. (a) Calibration image; (b) reference DOM; (c) reference DSM

    Fig. 4. Calibration image and reference images. (a) Calibration image; (b) reference DOM; (c) reference DSM

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    Image geometric accuracy before and after calibration. (a) Distribution of the absolute positioning residuals before calibration; (b) distribution of the absolute positioning residuals after calibration; (c) distribution of the relative positioning residuals before calibration; (d) distribution of the relative positioning residuals after calibration

    Fig. 5. Image geometric accuracy before and after calibration. (a) Distribution of the absolute positioning residuals before calibration; (b) distribution of the absolute positioning residuals after calibration; (c) distribution of the relative positioning residuals before calibration; (d) distribution of the relative positioning residuals after calibration

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    • Table 1. Image information of GF4 satellite PMS sensor calibration experiment

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      Table 1. Image information of GF4 satellite PMS sensor calibration experiment

      Image No.Control point number

      Imaging

      time

      		Position of image centerSpatial resolution /mImage size /（pixel×pixel）
      PMS 113414：09：5288.5° E，32.5° N66.210240×10240
      PMS 214214：11：3192.8° E，31.4° N63.4
      PMS 313914：13：0996.6° E，31.3° N60.1
      PMS 421513：02：3988.9° E，27.3° N62.2

    • Table 2. Statistics of relative residuals of viewing angle determined by calibration results

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      Table 2. Statistics of relative residuals of viewing angle determined by calibration results

      Image No.Mean /pixelRMS /pixelUnsigned maximum /pixel
      linesamplinesamplinesamp
      PMS 1-4.6×10-5-5.9×10-43.6×10-42.0×10-31.3×10-35.7×10-3
      PMS 2-4.3×10-54.2×10-45.6×10-42.2×10-32.3×10-31.0×10-2
      PMS 3-4.3×10-44.6×10-41.5×10-32.7×10-34.5×10-31.2×10-2
      PMS 41.2×10-45.7×10-41.6×10-32.2×10-36.1×10-39.4×10-3

    • Table 3. Statistics of image geometric accuracy before and after calibration

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      Table 3. Statistics of image geometric accuracy before and after calibration

      Processing stageAccuracies in line directionAccuracies in sample direction
      MeanRMSRMSEMeanRMSRMSE
      Initial RPC imaging model2.529.909.57-1.839.038.84
      After correcting the low-order error01.541.5401.851.85
      Calibration based on physical imaging model00.620.6200.630.63
      Calibration based on RPC imaging model00.620.6200.630.63

    • Table 4. Internal geometric accuracy of images before and after geometric calibration

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      Table 4. Internal geometric accuracy of images before and after geometric calibration

      Accuracy verification imageBefore calibrationCalibration based on physical imaging modelCalibration based on RPC imaging model
      MeanRMSMeanRMSMeanRMS
      samplinesamplinesamplinesamplinesamplinesampline
      PMS 2001.521.80000.670.64000.670.64
      PMS 3001.431.83000.730.70000.730.70
      PMS 4001.621.75000.810.82000.810.82
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    Yingdong Pi, Mi Wang, Siheng Wang, Huijie Zhao, Liang Zhao. On-Orbit Geometric Calibration of Panchromatic Planar Array Sensor on GF4 Satellite Based on the Rational Polynomial Coefficient Model[J]. Acta Optica Sinica, 2023, 43(12): 1228011

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Oct. 9, 2022

    Accepted: Dec. 12, 2022

    Published Online: Apr. 25, 2023

    The Author Email: Wang Siheng (rswangsiheng@163.com)

    DOI:10.3788/AOS221801

    Topics

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