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首页> 外文会议>Calibration of Passive Remote Observing Optical and Microwave Instrumentation >Results of calibrations of the NOAA-11 AVHRR made by reference to calibrated SPOT imagery at White Sands N.M
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Results of calibrations of the NOAA-11 AVHRR made by reference to calibrated SPOT imagery at White Sands N.M

机译：NOAA-11 AVHRR的校准结果，是通过在White Sands N.M处校准的SPOT图像得出的

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Abstract: The calibration method reported here makes use of the reflectances of several large, uniform areas determined from calibrated and atmospherically corrected SPOT Haute Resolution Visible (HRV) scenes of White Sands, New Mexico. These reflectances were used to predict the radiances in the first two channels of the NOAA-11 Advanced Very High Resolution Radiometer (AVHRR). The digital counts in the AVHRR image corresponding to these known reflectance areas were determined by the use of two image registration techniques. The plots of digital counts versus pixel radiance provided the calibration gains and offsets for the AVHRR. A reduction in the gains of 4% and 13% in channels 1 and 2, respectively, was found during the period 19 November 1988 to 21 June 1990. An error budget is presented for the method and is extended to the case of cross-calibrating sensors on the same orbital platform in the Earth Observing System (Eos) era.!
机译：摘要：这里报道的校准方法利用了几个大的均匀区域的反射率，这些区域是根据新墨西哥州白沙市经校准和大气校正的SPOT高分辨率分辨可见光（HRV）场景确定的。这些反射率用于预测NOAA-11先进超高分辨率辐射计（AVHRR）的前两个通道中的辐射率。通过使用两种图像配准技术确定与这些已知反射率区域相对应的AVHRR图像中的数字计数。数字计数与像素辐射度的关系图提供了AVHRR的校准增益和失调。在1988年11月19日至1990年6月21日期间，通道1和2的增益分别降低了4％和13％。该方法存在误差预算，并且扩展到交叉校准的情况。在地球观测系统（Eos）时代的同一轨道平台上的传感器！

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