Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site

Helder, Dennis L.; Thome, Kurtis J.; Mishra, Nischal; Chander, Gyanesh; Xiong, Xiaoxiong; Angal, Amit; Choi, Taeyoung

doi:10.1109/tgrs.2013.2243738

Cited by 96 publications

(77 citation statements)

References 32 publications

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“…for monitoring the sensors' temporal stabilities. Studies done with EO-1 Hyperion over Libya 4 suggest that a sensor can be calibrated to better than 1% accuracy with the implementation of a BRDF model in a transparent atmosphere [11]. Further studies done using Hyperion over Libya 4 have shown this site to be spectrally stable where Spectral Angle Mapper (SAM) angles are less than 1.6 degrees and average deviations are less than 5% reflectance level based on reference spectrum in 2004 within ETM+ RSR Full-Width at Half-Maximum (FWHM) ranges [18].…”

Section: Libya 4 Pics and Satellite Observationsmentioning

confidence: 99%

“…The image data for all sensors were then converted into physical units of TOA reflectance using the standard techniques and equations applicable for each sensor. It should be noted that this work was initially done for the absolute calibration of Landsat [11]. Therefore, for the sensors under examination here, only the spectral bands that have spectral overlap with Landsat have been chosen.…”

Section: Libya 4 Pics and Satellite Observationsmentioning

confidence: 99%

“…Helder et al presented the concept of an empirical absolute calibration model using a well-calibrated sensor in 2012 [11]. They developed an absolute calibration model using the Libya 4 test site, where Terra MODIS was used as the calibrated radiometer, and hyperspectral observations from EO-1 Hyperion were used for the spectral signature.…”

Section: Introductionmentioning

confidence: 99%

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Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site

et al. 2014

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Abstract:The objective of this paper is to report the improvements in an empirical absolute calibration model developed at South Dakota State University using Libya 4 (+28.55°, +23.39°) pseudo invariant calibration site (PICS). The approach was based on use of the Terra MODIS as the radiometer to develop an absolute calibration model for the spectral channels covered by this instrument from visible to shortwave infrared. Earth Observing One (EO-1) Hyperion, with a spectral resolution of 10 nm, was used to extend the model to cover visible and near-infrared regions. A simple Bidirectional Reflectance Distribution function (BRDF) model was generated using Terra Moderate Resolution Imaging Spectroradiometer (MODIS) observations over Libya 4 and the resulting model was validated with nadir data acquired from satellite sensors such as Aqua MODIS and Landsat 7 (L7) Enhanced Thematic Mapper (ETM+). The improvements in the absolute calibration model to account for the BRDF due to off-nadir measurements and annual variations in the atmosphere are summarized. BRDF models due to off-nadir viewing angles have been derived using the measurements from EO-1 Hyperion. In addition to L7

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Section: Libya 4 Pics and Satellite Observationsmentioning

confidence: 99%

Section: Libya 4 Pics and Satellite Observationsmentioning

confidence: 99%

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Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site

et al. 2014

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“…The selected surface size is more than sufficient to calibrate the MUX and WFI sensor. The images from Landsat-8 and CBERS-4 are acquired two dates four-days apart, but the site known as Libya-4 has proven to be the most stable of these sites over time [14]. …”

Section: Cross-calibrationmentioning

confidence: 99%

“…The PICS have been used for on-orbit radiometric trending of optical satellite for more than 15 years [14]. According to [15], the advantages of using these sites are their stable spectral characteristics over time, high reflectance, and minimal atmospheric effect on upward radiance.…”

Section: Cross-calibrationmentioning

confidence: 99%

First in-Flight Radiometric Calibration of MUX and WFI on-Board CBERS-4

et al. 2016

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Brazil and China have a long-term joint space based sensor program called China-Brazil Earth Resources Satellite (CBERS). The most recent satellite of this program (CBERS-4) was successfully launched on 7 December 2014. This work describes a complete procedure, along with the associated uncertainties, used to calculate the in-flight absolute calibration coefficients for the sensors Multispectral Camera (MUX) and Wide-Field Imager (WFI) on-board CBERS-4. Two absolute radiometric calibration techniques were applied: (i) reflectance-based approach and (ii) cross-calibration method. A specific site at Algodones Dunes region located in the southwestern portion of the United States of America was used as a reference surface. Radiometric ground and atmospheric measurements were carried out on 9 March 2015, when CBERS-4 passed over the region. In addition, a cross-calibration between both MUX and WFI on-board CBERS-4 and the Operational Land Imager (OLI) on-board Landsat-8 was performed using the Libya-4 Pseudo Invariant Calibration Site. The gain coefficients are now available: 1.68, 1.62, 1.59 and 1.42 for MUX and 0.379, 0.498, 0.360 and 0.351 for WFI spectral bands blue, green, red and NIR, respectively, in units of (W/(m 2¨s r¨µm))/DN. These coefficients were determined with uncertainties lower than 3.5%. As a validation of these radiometric coefficients, cross-calibration was also undertaken. An evaluation of radiometric consistency was performed between the two instruments (MUX and WFI) on-board CBERS-4 and with the well calibrated Landsat-7 ETM+. Results show that the reflectance values match in all the analogous spectral bands within the specified calibration uncertainties.

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Research Progress on On-Orbit Calibration of Infrared Sensors for Power Grid Fire Monitoring

Ziyu,

Feng,

Zhang

et al. 2023

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site

Cited by 96 publications

References 32 publications

Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site

Absolute Calibration of Optical Satellite Sensors Using Libya 4 Pseudo Invariant Calibration Site

First in-Flight Radiometric Calibration of MUX and WFI on-Board CBERS-4

Research Progress on On-Orbit Calibration of Infrared Sensors for Power Grid Fire Monitoring

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