Cross-Calibration between ASTER and MODIS Visible to Near-Infrared Bands for Improvement of ASTER Radiometric Calibration.
Cross-Calibration between ASTER and MODIS Visible to Near-Infrared Bands for Improvement of ASTER Radiometric Calibration.
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DOI：
10.3390/s17081793
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发表时间：
2017-08-04
期刊：
影响因子：
--
通讯作者：
Thome K
中科院分区：
文献类型：
--
作者：
Obata K;Tsuchida S;Yamamoto H;Thome K
高级星载热发射和反射辐射计(ASTER)和中分辨率成像光谱仪(MODIS)之间的辐射交叉定标部分用于推导ASTER辐射定标系数(RCC)曲线，它是可见光到近红外波段的数据函数。然而，交叉校准是不够准确的，因为传感器的光谱和空间响应的差异的影响没有得到完全缓解。本研究尝试使用一种改进的交叉定标算法来评估两个传感器之间的辐射一致性，以解决光谱和空间效应，并得出基于交叉定标的RCC，从而提高ASTER定标精度。总体而言，在当前的辐射/反射产品中，用ASTER波段1和2测得的辐射比在同一场景中与MODIS对应的测得的辐射平均高3.9%和3.6%，而ASTER的3N波段(NEIR)比MODIS的对应波段小0.6%。对于ASTER波段1、2和3N，两个传感器之间辐射的百分比均方根误差(%RMSE)分别为3.7、4.2和2.3，略高于或小于ASTER辐射定标精度要求(4%)。通过详细阐述误差预算表来评估国际单位制(SI)结果的溯源，分析了交叉校准的不确定度。使用衍生的RCC将进一步减少ASTER辐射定标中的误差，并随后改善传感器之间的互操作性，以实现协同应用。
Radiometric cross-calibration between the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Terra-Moderate Resolution Imaging Spectroradiometer (MODIS) has been partially used to derive the ASTER radiometric calibration coefficient (RCC) curve as a function of date on visible to near-infrared bands. However, cross-calibration is not sufficiently accurate, since the effects of the differences in the sensor’s spectral and spatial responses are not fully mitigated. The present study attempts to evaluate radiometric consistency across two sensors using an improved cross-calibration algorithm to address the spectral and spatial effects and derive cross-calibration-based RCCs, which increases the ASTER calibration accuracy. Overall, radiances measured with ASTER bands 1 and 2 are on averages 3.9% and 3.6% greater than the ones measured on the same scene with their MODIS counterparts and ASTER band 3N (nadir) is 0.6% smaller than its MODIS counterpart in current radiance/reflectance products. The percentage root mean squared errors (%RMSEs) between the radiances of two sensors are 3.7, 4.2, and 2.3 for ASTER band 1, 2, and 3N, respectively, which are slightly greater or smaller than the required ASTER radiometric calibration accuracy (4%). The uncertainty of the cross-calibration is analyzed by elaborating the error budget table to evaluate the International System of Units (SI)-traceability of the results. The use of the derived RCCs will allow further reduction of errors in ASTER radiometric calibration and subsequently improve interoperability across sensors for synergistic applications.
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DOI：
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发表时间：
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期刊：
ADVANCES IN SPACE RESEARCH-SERIES
影响因子：
--
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BARET, F;JACQUEMOUD, S;HANOCQ, JF
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Doelling, David R.;Wu, Aisheng;Gopalan, Arun
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Gopalan, Arun
DOI：
10.1109/tgrs.2005.849055
发表时间：
2005-12-01
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8.2
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Iwasaki, A;Fujisada, H
通讯作者：
Fujisada, H
DOI：
10.1109/tgrs.2012.2228008
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2013-03-01
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Chander, Gyanesh;Helder, Dennis L.;Shrestha, Alok K.
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LABS, D