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首页> 外文期刊>Journal of Research of the National Institute of Standards and Technology >Radiometric Measurement Comparison on the Integrating Sphere Source Used to Calibrate the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+)
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Radiometric Measurement Comparison on the Integrating Sphere Source Used to Calibrate the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+)

机译：用于校准中分辨率成像光谱仪（MODIS）和Landsat 7增强型专题制图仪Plus（ETM +）的积分球源的辐射测量比较

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摘要

As part of a continuing effort to validate the radiometric scales assigned to integrating sphere sources used in the calibration of Earth Observing System (EOS) instruments, a radiometric measurement comparison was held in May 1998 at Raytheon/Santa Barbara Remote Sensing (SBRS). This comparison was conducted in support of the calibration of the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+) instruments. The radiometric scale assigned to the Spherical Integrating Source (SIS 100) by SBRS was validated through a comparison with radiometric measurements made by a number of stable, well-characterized transfer radiometers from the national Institute of Standards and Technology (NIST), the National Aeronautics and Space Flight Center (NASA's GSFC), and the University of Arizona Optical Sciences Center (UA). The measured radiances from the radiometers differed by ±3% in the visible to near infrared when compared to the SBRS calibration of the sphere, and the overall agreement was within the combined uncertainties of the individual measurements. In general, the transfer radiometers gave higher values than the SBRS calibration in the near infrared and lower values in the blue. The measurements of the radiometers differed by ±4% from 800 nm to 1800 nm compared to the SBRS calibration of the sphere, and the overall agreement was within the combined uncertainties of the individual measurements for wavelengths less than 2200 nm. The results of the radiometric measurement comparison presented here supplement the results of previous measurement comparisons on the integrating sphere sources used to calibrate the Multi-angle Imaging SpectroRadiometer (MISR) at NASA's Jet Propulsion Laboratory (JPL), Pasadena, CA and the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) at NEC Corporation, Yokohama, Japan.
机译：为了继续验证分配给地球观测系统（EOS）仪器校准中使用的积分球源的辐射度标度的一部分，1998年5月在雷神公司/圣塔芭芭拉遥感局（SBRS）进行了辐射度测量比较。进行此比较是为了支持中分辨率成像光谱仪（MODIS）和Landsat 7 Enhanced Thematic Mapper Plus（ETM +）仪器的校准。 SBRS分配给球形积分源（SIS 100）的辐射标度通过与美国国家标准技术研究院（NIST）的许多稳定，特征明确的转移辐射计进行的辐射测量进行比较而得到验证和太空飞行中心（NASA的GSFC），以及亚利桑那大学光学科学中心（UA）。与球体的SBRS校准相比，从辐射计测得的辐射在可见光到近红外光之间相差±3％，并且总体一致性在单个测量值的不确定性之内。通常，在近红外范围内，传输辐射计比SBRS校准值更高，而在蓝色区域则更低。与球体的SBRS校准相比，从800 nm到1800 nm，辐射计的测量值相差±4％，对于小于2200 nm的波长，总体一致性在单个测量值的不确定性之内。此处介绍的辐射测量比较结果补充了以前在用于校准美国加利福尼亚州帕萨迪纳市NASA喷气推进实验室（JPL）的多角度成像光谱辐射计（MISR）和高级星载热学的积分球源上进行的测量比较结果。日本横滨NEC公司的发射和反射辐射计（ASTER）。

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