Absolute radiometric calibration of the RapidEye multispectral imager using the reflectance-based vicarious calibration method

Naughton, Denis; Brunn, Andreas; Czapla-Myers, Jeffrey S.; Douglass, S.R.; Thiele, Michael; Weichelt, Horst; Oxfort, Michael

doi:10.1117/1.3613950

Cited by 41 publications

(29 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PlanetScope imagery is calibrated to a radiometric uncertainty across satellites of 5-6% at 1-sigma [44] and RapidEye is calibrated to 4% uncertainty [45]. These values compare reasonably to Landsat at-sensor calibration uncertainty, which ranges from 3% (OLI) to 5% (TM and ETM+) to 10% (MSS) [46][47][48].…”

Section: Limitations and Challengesmentioning

confidence: 98%

Tracking Dynamic Northern Surface Water Changes with High-Frequency Planet CubeSat Imagery

et al. 2017

View full text Add to dashboard Cite

Recent deployments of CubeSat imagers by companies such as Planet may advance hydrological remote sensing by providing an unprecedented combination of high temporal and high spatial resolution imagery at the global scale. With approximately 170 CubeSats orbiting at full operational capacity, the Planet CubeSat constellation currently offers an average revisit time of <1 day for the Arctic and near-daily revisit time globally at 3 m spatial resolution. Such data have numerous potential applications for water resource monitoring, hydrologic modeling and hydrologic research. Here we evaluate Planet CubeSat imaging capabilities and potential scientific utility for surface water studies in the Yukon Flats, a large sub-Arctic wetland in north central Alaska. We find that surface water areas delineated from Planet imagery have a normalized root mean square error (NRMSE) of <11% and geolocation accuracy of <10 m as compared with manual delineations from high resolution (0.3-0.5 m) WorldView-2/3 panchromatic satellite imagery. For a 625 km 2 subarea of the Yukon Flats, our time series analysis reveals that roughly one quarter of 268 lakes analyzed responded to changes in Yukon River discharge over the period 23 June-1 October 2016, one half steadily contracted, and one quarter remained unchanged. The spatial pattern of observed lake changes is heterogeneous. While connections to Yukon River control the hydrologically connected lakes, the behavior of other lakes is complex, likely driven by a combination of intricate flow paths, underlying geology and permafrost. Limitations of Planet CubeSat imagery include a lack of an automated cloud mask, geolocation inaccuracies, and inconsistent radiometric calibration across multiple platforms. Although these challenges must be addressed before Planet CubeSat imagery can achieve its full potential for large-scale hydrologic research, we conclude that CubeSat imagery offers a powerful new tool for the study and monitoring of dynamic surface water bodies.

show abstract

Section: Limitations and Challengesmentioning

confidence: 98%

Tracking Dynamic Northern Surface Water Changes with High-Frequency Planet CubeSat Imagery

et al. 2017

View full text Add to dashboard Cite

show abstract

“…RapidEye is a five-satellite constellation launched on 29 August 2008, able to provide data on a daily basis at off-nadir conditions and every five days at-nadir [73]. Each satellite of the mission, named from RE1-RE5, carries identical MSI instruments.…”

Section: Overview Of Sensors and Satellite Datamentioning

confidence: 99%

“…The technical specifications of NAOMI-1 are reviewed in Table 1, and more details can be found in Mattar et al [9] and Aerial Photogrammetric Service (SAF) [10]. RapidEye is a five-satellite constellation launched on 29 August 2008, able to provide data on a daily basis at off-nadir conditions and every five days at-nadir [73]. Each satellite of the mission, named from RE1-RE5, carries identical MSI instruments.…”

Section: Overview Of Sensors and Satellite Datamentioning

confidence: 99%

Radiometric Cross-Calibration of the Chilean Satellite FASat-C Using RapidEye and EO-1 Hyperion Data and a Simultaneous Nadir Overpass Approach

et al. 2016

View full text Add to dashboard Cite

Abstract:The absolute radiometric calibration of a satellite sensor is the critical factor that ensures the usefulness of the acquired data for quantitative applications on remote sensing. This work presents the results of the first cross-calibration of the sensor on board the Sistema Satelital de Observación de la Tierra (SSOT) Chilean satellite or Air Force Satellite FASat-C. RapidEye-MSI was chosen as the reference sensor, and a simultaneous Nadir Overpass Approach (SNO) was applied. The biases caused by differences in the spectral responses of both instruments were compensated through an adjustment factor derived from EO-1 Hyperion data. Through this method, the variations affecting the radiometric response of New AstroSat Optical Modular Instrument (NAOMI-1), have been corrected based on collections over the Frenchman Flat calibration site. The results of a preliminary evaluation of the pre-flight and updated coefficients have shown a significant improvement in the accuracy of at-sensor radiances and TOA reflectances: an average agreement of 2.63% (RMSE) was achieved for the multispectral bands of both instruments. This research will provide a basis for the continuity of calibration and validation tasks of future Chilean space missions.

show abstract

“…This method is widely used to individually evaluate the radiometric function of satellites (Naughton et al 2011). In May and June 2015, a field campaign was performed in Goheung, South Korea, and Zuunmod, Mongolia, to calculate the absolute calibration coefficient using a reflectance-based vicarious method, which was calculated from the field campaign results and cross-calibration ( To evaluate the absolute calibration coefficient using a vicarious approach for KOMPSAT-3A, it was cross-validated with the Landsat-8 OLI sensor and TOA reflectance using the Libya-4 PICS.…”

Section: Mehtodmentioning

confidence: 99%

Absolute Radiometric Calibration of KOMPSAT-3A

Ahn¹,

Shin²,

Kim³

et al. 2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

ABSTRACT:This paper presents a vicarious radiometric calibration of the Korea Multi-Purpose Satellite-3A (KOMPSAT-3A) performed by the Korea Aerospace Research Institute (KARI) and the Pukyong National University Remote Sensing Group (PKNU RSG) in 2015.The primary stages of this study are summarized as follows: (1) A field campaign to determine radiometric calibrated target fields was undertaken in Mongolia and South Korea. Surface reflectance data obtained in the campaign were input to a radiative transfer code that predicted at-sensor radiance. Through this process, equations and parameters were derived for the KOMPSAT-3A sensor to enable the conversion of calibrated DN to physical units, such as at-sensor radiance or TOA reflectance. (2) To validate the absolute calibration coefficients for the KOMPSAT-3A sensor, we performed a radiometric validation with a comparison of KOMPSAT-3A and Landsat-8 TOA reflectance using one of the six PICS (Libya 4). Correlations between top-of-atmosphere (TOA) radiances and the spectral band responses of the KOMPSAT-3A sensors at the Zuunmod, Mongolia and Goheung, South Korea sites were significant for multispectral bands. The average difference in TOA reflectance between KOMPSAT-3A and Landsat-8 image over the Libya 4, Libya site in the red-green-blue (RGB) region was under 3%, whereas in the NIR band, the TOA reflectance of KOMPSAT-3A was lower than the that of Landsat-8 due to the difference in the band passes of two sensors. The KOMPSAT-3Aensor includes a band pass near 940 nm that can be strongly absorbed by water vapor and therefore displayed low reflectance. Toovercome this, we need to undertake a detailed analysis using rescale methods, such as the spectral bandwidth adjustment factor.

show abstract

Absolute radiometric calibration of the RapidEye multispectral imager using the reflectance-based vicarious calibration method

Cited by 41 publications

References 14 publications

Tracking Dynamic Northern Surface Water Changes with High-Frequency Planet CubeSat Imagery

Tracking Dynamic Northern Surface Water Changes with High-Frequency Planet CubeSat Imagery

Radiometric Cross-Calibration of the Chilean Satellite FASat-C Using RapidEye and EO-1 Hyperion Data and a Simultaneous Nadir Overpass Approach

Absolute Radiometric Calibration of KOMPSAT-3A

Contact Info

Product

Resources

About