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首页> 外文会议>Conference on Sensors, Systems, and Next-Generation Satellites VI Sep 23-26, 2002 Agia Pelagia, Crete, Greece >Improved Transfer Standard Sources for Calibration of Field Spectrometers Used for Earth Observation Applications
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Improved Transfer Standard Sources for Calibration of Field Spectrometers Used for Earth Observation Applications

机译：用于地球观测应用的现场光谱仪校准的改进传输标准源

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摘要

NPL, in conjunction with many NMIs, has been seeking to improve the accuracy of its primary scales of spectral irradiance and radiance. In common with other laboratories this has been done through the use of an ultra-high temperature blackbody characterised using filter radiometers calibrated against a cryogenic radiometer. Whilst such work is of importance to the Earth Observation (EO) community, it is also recognised that of at least equal importance is an improvement in the quality of the scales that are provided to the end user. This paper will describe new transfer standard sources of both spectral radiance and irradiance that have been developed not only to improve accuracy to the end user, but also to provide it in a form that is both robust and convenient to use. For example the radiance source has a spatial non-uniformity of <0.05% over a 50 mm diameter aperture and can maintain its accuracy (<0.3%) for more than 100 hrs of operation.
机译：NPL与许多NMI一直在寻求提高其光谱辐照度和辐射度的主要尺度的准确性。与其他实验室一样，这是通过使用超高温黑体来完成的，该超黑体的特征是使用针对低温辐射计校准的过滤辐射计。尽管这样的工作对地球观测（EO）社区很重要，但也应认识到，至少同样重要的是，改善了提供给最终用户的秤的质量。本文将介绍光谱辐射和辐照度的新传输标准源，这些新标准不仅可以提高最终用户的准确性，还可以以健壮且易于使用的形式提供它。例如，辐射源在直径为50 mm的孔径上的空间不均匀度为<0.05％，并且可以在超过100小时的操作时间内保持其精度（<0.3％）。

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