Prime candidate Earth targets for the post-launch radiometric calibration of space-based optical imaging instruments

Teillet, Philippe; Barsi, Julia A.; Chander, Gyanesh; Thome, Kurtis J.

doi:10.1117/12.733156

Cited by 63 publications

(43 citation statements)

References 47 publications

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“…All of these contribute in an interaction process causing seasonal, daily and cyclic changes, which are also dependent on weather conditions during the entire year [26]. In the optimum conditions, for example the Saharan deserts, the stability can be well below 5% [6,21].…”

Section: Stability Aspectsmentioning

confidence: 99%

“…The spatially and temporally uniform, high surface reflectance areas, including desert sites in North Africa, Saudi Arabia, China, Libya, Mexico, and Peru, the alkali flats, and the ice-surfaces of Greenland and Antarctica, have been studied comprehensively, in multi-year studies, to detect optimal sites [19][20][21]. The desert sand sites have shown the most stable performance [6,21].…”

Section: Reference Targets In Existing Radiometric Test Sitesmentioning

confidence: 99%

“…The following have been considered as the general requirements of the surfaces of the CEOS radiometric calibration sites [6]:…”

Section: Reference Targets In Existing Radiometric Test Sitesmentioning

confidence: 99%

“…Relevant instruments include multispectral photogrammetric cameras and other hyper-and multi-spectral sensors, and laser scanners. The elementary requirements of radiometric test sites are to provide targets or surfaces with traceable radiance and reflectance values and targets for point spread function (PSF) measurement [2][3][4][5][6].…”

Section: Open Accessmentioning

confidence: 99%

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Analysis of Properties of Reflectance Reference Targets for Permanent Radiometric Test Sites of High Resolution Airborne Imaging Systems

et al. 2010

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Reliable and optimal exploitation of rapidly developing airborne imaging methods requires geometric and radiometric quality assurance of production systems in operational conditions. Permanent test sites are the most promising approach for cost-efficient performance assessment. Optimal construction of permanent radiometric test sites for high resolution airborne imaging systems is an unresolved issue. The objective of this study was to assess the performance of commercially available gravels and painted and unpainted concrete targets for permanent, open-air radiometric test sites under sub-optimal climate conditions in Southern Finland. The reflectance spectrum and reflectance anisotropy and their stability were characterized during the summer of 2009. The management of reflectance anisotropy and stability were shown to be the key issues for better than 5% reflectance accuracy.

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Section: Stability Aspectsmentioning

confidence: 99%

Section: Reference Targets In Existing Radiometric Test Sitesmentioning

confidence: 99%

“…The following have been considered as the general requirements of the surfaces of the CEOS radiometric calibration sites [6]:…”

Section: Reference Targets In Existing Radiometric Test Sitesmentioning

confidence: 99%

Section: Open Accessmentioning

confidence: 99%

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Analysis of Properties of Reflectance Reference Targets for Permanent Radiometric Test Sites of High Resolution Airborne Imaging Systems

et al. 2010

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“…This makes it difficult to establish direct comparisons on a point-by-point basis. A typical solution is to manually delineate large homogenous areas (or region of interest, ROIs), with the mean statistics of these areas used for both target and reference sensors [12,[20][21][22][23]. However, relatively large variations may exist over those visually selected ROIs (say as much as 10 DNs), leading to potential uncertainties in the calibration coefficients.…”

Section: Calibration Sites Selectionmentioning

confidence: 99%

Radiometric cross Calibration of Gaofen-1 WFV Cameras Using Landsat-8 OLI Images: A Simple Image-Based Method

Feng

Pang

et al. 2016

Remote Sensing

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WFV (Wide Field of View) cameras on-board Gaofen-1 satellite (gaofen means high resolution) provide unparalleled global observations with both high spatial and high temporal resolutions. However, the accuracy of the radiometric calibration remains unknown. Using an improved cross calibration method, the WFV cameras were re-calibrated with well-calibrated Landsat-8 OLI (Operational Land Imager) data as reference. An objective method was proposed to guarantee the homogeneity and sufficient dynamic coverage for calibration sites and reference sensors. The USGS spectral library was used to match the most appropriate hyperspectral data, based on which the spectral band differences between WFV and OLI were adjusted. The TOA (top-of-atmosphere) reflectance of the cross-calibrated WFV agreed very well with that of OLI, with the mean differences between the two sensors less than 5% for most of the reflectance ranges of the four spectral bands, after accounting for the spectral band difference between the two sensors. Given the calibration error of 3% for Landsat-8 OLI TOA reflectance, the uncertainty of the newly-calibrated WFV should be within 8%. The newly generated calibration coefficients established confidence when using Gaofen-1 WFV observations for their further quantitative applications, and the proposed simple cross calibration method here could be easily extended to other operational or planned satellite missions.

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Intercalibration of CERES, MODIS, and MISR reflected solar radiation and its application to albedo trends

Zhan

Davies

2016

JGR Atmospheres

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Measurements on the Terra satellite by the Cloud and the Earth's Radiant Energy System (CERES), the Moderate Resolution Imaging Spectroradiometer (MODIS), and the Multiangle Imaging Spectroradiometer (MISR), between 2001 and 2015 over the polar regions, are analyzed in order to investigate the intercalibration differences between these instruments. Direct comparisons of colocated near‐nadir radiances from CERES, MODIS, and MISR show relative agreement within 2.4% decade−1. By comparison with the CERES shortwave broadband, MODIS Collection 6 is getting brighter, by 1.0 ± 0.7% decade−1 in the red band and 1.4 ± 0.7% decade−1 in the near infrared. MISR's red and near‐infrared bands, however, show darkening trends of −1.0 ± 0.6% decade−1 and −1.1 ± 0.6% decade−1, respectively. The CERES/MODIS or CERES/MISR visible and near IR radiance ratio is shown to have a significant negative correlation with precipitable water content over the Antarctic Plateau. The intercalibration results successfully correct the differential top‐of‐atmosphere trends in zonal albedos between CERES and MISR.

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Prime candidate Earth targets for the post-launch radiometric calibration of space-based optical imaging instruments

Cited by 63 publications

References 47 publications

Analysis of Properties of Reflectance Reference Targets for Permanent Radiometric Test Sites of High Resolution Airborne Imaging Systems

Analysis of Properties of Reflectance Reference Targets for Permanent Radiometric Test Sites of High Resolution Airborne Imaging Systems

Radiometric cross Calibration of Gaofen-1 WFV Cameras Using Landsat-8 OLI Images: A Simple Image-Based Method

Intercalibration of CERES, MODIS, and MISR reflected solar radiation and its application to albedo trends

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