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陆地卫星表面产品验证仪器仪表:BigMAC演习

Dennis Helder1, Mahesh Shrestha1, Joshua Mann1

  • 1KBR, Contractor to U.S. Geological Survey Earth Resources Observation and Science Center, Sioux Falls, SD 57030, USA.

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概括

大型多机构运动 (BigMAC) 评估了用于验证卫星表面反射率和温度产品的技术. 廉价的自主射线计显示出良好的准确性和可用于操作测量的部署性.

关键词:
陆地卫星 (Landsat) 是一个地球卫星.潮开始的时候有田地可以耕作.产品验证 产品验证测光谱仪的光谱仪.镜面阵列辐射测定校准 (SPARC)表面反射率 / 温度无人驾驶飞机系统 (UAS) 是一种无人驾驶飞机系统.

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科学领域:

  • 地球观测 地球观测
  • 遥感 遥感 遥感 遥感
  • 地理空间科学 地理空间科学

背景情况:

  • 从地球光学图像中对表面反射率/温度产品的需求日益增加.
  • 在各种大气和陆地表面条件下验证表面产品准确性的挑战.
  • 传统的卫星校准方法的局限性,用于表面产品的验证.

研究的目的:

  • 评估目前用于验证来自卫星的表面产品的技术,重点是Landsat.
  • 评估测量技术的准确性,精度和可部署性.
  • 确定操作表面反射率和温度测量的可行选择.

主要方法:

  • 在2021年8月进行了大型多机构活动 (BigMAC),布鲁金斯,SD.
  • 实地测试和评估各种测量技术,包括手持式光谱辐射计,无人机式辐射计和基于镜子的实证线方法.
  • 评估了廉价的长期自主放射仪和热量测量技术.

主要成果:

  • 手持式光谱辐射计提供高精度 (0.01-0.02反射率单位),但成本昂贵.
  • 基于UAS的辐射计和基于镜子的方法显示了准确性潜力,但面临着部署挑战.
  • 廉价的自主射线计表现出良好的准确性,精度和易于部署.
  • 热测量技术通过一些易于部署的仪器实现了1-2K的精度.

结论:

  • 现有技术可用于操作表面反射率和温度测量.
  • 廉价的自主射线计对验证任务具有前景.
  • 预计未来的测量技术将会得到改进.