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首页> 外文会议>Sensors, systems, and next-generation satellites XX >Vicarious absolute radiometric calibration of GF-2 PMS2 sensor using permanent artificial targets in China
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Vicarious absolute radiometric calibration of GF-2 PMS2 sensor using permanent artificial targets in China

机译：中国永久性人工目标对GF-2 PMS2传感器的替代辐射绝对校准

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摘要

GF-2, launched on August 19 2014, is one of the high-resolution land resource observing satellite of the China GF series satellites plan. The radiometric performance evaluation of the onboard optical pan and multispectral (PMS2) sensor of GF-2 satellite is very important for the further application of the data. And, the vicarious absolute radiometric calibration approach is one of the most useful way to monitor the radiometric performance of the onboard optical sensors, hi this study, the traditional reflectance-based method is used to vicarious radiometrically calibrate the onboard PMS2 sensor of GF-2 satellite using three black, gray and white reflected permanent artificial targets located in the AOE Baotou site in China. Vicarious field calibration campaign were carried out in the AOE-Baotou calibration site on 22 April 2016. And, the absolute radiometric calibration coefficients were determined with in situ measured atmospheric parameters and surface reflectance of the permanent artificial calibration targets. The predicted TOA radiance of a selected desert area with our determined calibrated coefficients were compared with the official distributed calibration coefficients. Comparison results show a good consistent and the mean relative difference of the multispectral channels is less than5％. Uncertainty analysis was also carried out and a total uncertainty with 3.87％ is determined of the TOA radiance.
机译：GF-2于2014年8月19日发射升空，是中国GF系列卫星计划中的高分辨率土地资源观测卫星之一。 GF-2卫星车载光学云台和多光谱（PMS2）传感器的辐射性能评估对于数据的进一步应用非常重要。而且，替代的绝对辐射度校准方法是监视车载光学传感器的辐射性能的最有用方法之一。在这项研究中，传统的基于反射率的方法用于替代性地对GF-2的车载PMS2传感器进行辐射校准。卫星使用位于中国AOE包头站点的三个黑色，灰色和白色反射的永久人造目标。 2016年4月22日在AOE-包头校准场进行了替代场校准活动。并且，通过现场测量的大气参数和永久性人工校准目标的表面反射率确定了绝对辐射校准系数。使用我们确定的校准系数，将选定沙漠地区的预测TOA辐射与官方分配的校准系数进行比较。比较结果表明，多光谱通道具有良好的一致性，平均相对差小于5％。还进行了不确定度分析，确定了TOA辐射度的总不确定度为3.87％。

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  • 来源
    《Sensors, systems, and next-generation satellites XX》|2016年|1000019.1-1000019.6|共6页
  • 会议地点 Edinburgh(GB)
  • 作者

    Yaokai Liu; Chuanrong Li; Lingling Ma; Ning Wang; Yonggang Qian; Lingli Tang;

  • 作者单位

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094,University of Chinese Academy of Sciences, Beijing China 100049;

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094;

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094;

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094;

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094;

    Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto- Electronics, Chinese Academy of Sciences, Beijing China 100094;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Radiometric calibration; GF-2 satellite; PMS2 sensor;

    机译：辐射定标； GF-2卫星； PMS2传感器;

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