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Intercalibration of DMSP-OLS night-time light data by the invariant region method

机译：不变区域法对DMSP-OLS夜间光数据进行互标

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摘要

DMSP-OLS (Defense Meteorological Satellite Program Operational Linescan System) night-time light data can accurately reflect the scope and intensity of human activities. However, the raw data cannot be used directly for temporal analyses due to the lack of inflight calibration. There are three problems that should be addressed in intercalibration. First, because of differences between sensors, the data are not identical even when obtained in the same year. Second, different acquisition times may lead to random or systematic fluctuations in the data obtained by satellites in different orbits. Third, a pixel saturation phenomenon also exists in the urban centres of the image. Therefore, an invariant region method was used in this article, and the relative radiometric calibration and saturation correction achieved the desired results. In the meantime, intercalibration models for each satellite year of DMSP-OLS night-time light data were produced. Finally, intercalibration accuracy was evaluated, and the intercalibration results were tested with the corresponding gross domestic product (GDP) data.
机译：DMSP-OLS（国防气象卫星计划可操作线扫描系统）夜间光数据可以准确反映人类活动的范围和强度。但是，由于缺乏机内校准，原始数据无法直接用于时间分析。相互校准应解决三个问题。首先，由于传感器之间的差异，即使在同一年获得的数据也不相同。其次，不同的获取时间可能导致卫星在不同轨道上获得的数据发生随机或系统的波动。第三，在图像的城市中心也存在像素饱和现象。因此，本文采用不变区域方法，相对辐射定标和饱和度校正获得了预期的结果。同时，针对每个DMSP-OLS卫星年的夜间光数据，建立了相互校准模型。最后，评估相互校准的准确性，并使用相应的国内生产总值（GDP）数据对相互校准的结果进行测试。

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  • 来源
    《International journal of remote sensing》 |2013年第20期|7356-7368|共13页
  • 作者

    Jiansheng Wu; Shengbin He; Jian Peng; Weifeng Li; Xiaohong Zhong;

  • 作者单位

    School of Urban Planning and Design, Peking University, Shenzhen 518055, China,College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;

    School of Urban Planning and Design, Peking University, Shenzhen 518055, China;

    College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;

    Department of Urban Planning and Design, The University of Hong Kong, Hong Kong, China;

    School of Urban Planning and Design, Peking University, Shenzhen 518055, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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