2022 Joint Agency Commercial Imagery Evaluation—Remote sensing satellite compendium

Chandra, Shankar N. Ramaseri; Christopherson, Jon; Casey, Kimberly A.; Lawson, Jane; Sampath, Aparajithan

doi:10.3133/cir1500

Cited by 4 publications

(3 citation statements)

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“…These calibrations would form the basis for the absolute radiometric SI traceability, flat-fielding, and RSR. Although these methods are typically capable of 3-5% [28] uncertainties, recent work indicates lower uncertainties could be possible [29].…”

Section: Radiometric Accuracymentioning

confidence: 99%

Concept of a Satellite Cross-Calibration Radiometer for In-Orbit Calibration of Commercial Optical Satellites

Thankappan,

Christopherson,

Cantrell

et al. 2024

Remote Sensing

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The satellite Earth observation (EO) sector is burgeoning with hundreds of commercial satellites being launched each year, delivering a rich source of data that could be exploited for societal benefit. Data streams from the growing number of commercial satellites are of variable quality, limiting the potential for their combined use in science applications that need long time-series data from multiple sources. The quality of calibration performed on optical sensors onboard many satellite systems is highly variable due to calibration methods, sensor design, mission objective, budget, or other operational constraints. A small number of currently operating well-characterised satellite systems with onboard calibration, such as Landsat-8/9 and Sentinel-2, and planned future missions, like the NASA Climate Absolute Radiance and Refractivity Observatory (CLARREO) Pathfinder, the European Space Agency (ESA)’s Traceable Radiometry Underpinning Terrestrial and Helio Studies (TRUTHS), and LIBRA from China, are considered benchmarks for optical data quality due to their traceability to international measurement standards. This paper describes the concept of a space-based transfer calibration radiometer called the Satellite Cross-Calibration Radiometer (SCR) that would enable the calibration parameters from satellites such as Landsat-8/9, Sentinel-2, or other benchmark systems to be transferred to a range of commercial optical EO satellite systems while in orbit. A description of the key characteristics of the SCR to successfully operate in orbit and transfer calibration from reference systems to client systems is presented. A system like the SCR in orbit could complement SI-Traceable satellites (SITSats) to improve data quality and consistency and facilitate the interoperable use of data from multiple optical sensor systems for delivering higher returns on the global investment in EO.

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Section: Radiometric Accuracymentioning

confidence: 99%

Concept of a Satellite Cross-Calibration Radiometer for In-Orbit Calibration of Commercial Optical Satellites

Thankappan,

Christopherson,

Cantrell

et al. 2024

Remote Sensing

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“…Earth observation mission orbital characteristics can also be centrally accessed from Ramaseri Chandra et al. (2022) and https://calval.cr.usgs.gov/apps/compendium. Orbital simulations were done via Systems ToolKitTM software (https://www.ansys.com/products/missions/ansys-stk) and can be done with similar tools (e.g., https://ncc.nesdis.noaa.gov/VIIRS/SNOPredictions/).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…The orbital parameters for missions under development, including SBG, are notional as of the time of writing this paper and may be subject to change. Earth observation mission details and orbital parameters can be centrally accessed at Ramaseri Chandra et al., 2022 and online at https://calval.cr.usgs.gov/apps/compendium.…”

Section: Orbit Planning—a Calibration and Validation Perspectivementioning

confidence: 99%

Calibration and Validation for the Surface Biology and Geology (SBG) Mission Concept: Recommendations for a Multi‐Sensor System for Imaging Spectroscopy and Thermal Imagery

Turpie,

Casey,

Crawford

et al. 2023

JGR Biogeosciences

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The primary objective of the NASA Surface Biology and Geology (SBG) mission is to measure biological, physical, chemical, and mineralogical features of the Earth’s surface, realizing a key conceptual component of the envisioned NASA Earth System Observatory (ESO). SBG is planned to launch as a two‐platform mission in the late 2020s, the first of the ESO satellites. Targeted science and applications objectives based on observations of the Earth’s surface biology and geology helped to define the mission architecture and instrument capabilities for the SBG mission concept. These objectives further drove the need for enabling change detection and trending of surface biological and geological features. These needs implied fundamental calibration goals to achieve the necessary science data quality characteristics. To meet those goals, calibration and validation pre‐launch and on‐orbit methods formed a basis of the calibration and validation concept, including the combined use of on‐board references, vicarious techniques, and routine lunar imaging. International collaboration with space agencies in other countries, an important feature of the recommended SBG mission architecture, uncovered and emphasized the need for inter‐calibration techniques that underscored the importance of collaborative instrument characterization data sharing and the use of common calibration references that are International System of Units (SI) traceable in pre‐launch and post‐launch on orbit calibration mission phases. International collaboration through the use of terrestrial and aquatic networks on six continents for vicarious calibration and validation activities will further assure necessary science data quality while in orbit.

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System characterization report on the Gaofen-6

Sampath,

Christopherson,

Park

et al. 2024

Open-File Report

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2022 Joint Agency Commercial Imagery Evaluation—Remote sensing satellite compendium

Cited by 4 publications

References 0 publications

Concept of a Satellite Cross-Calibration Radiometer for In-Orbit Calibration of Commercial Optical Satellites

Concept of a Satellite Cross-Calibration Radiometer for In-Orbit Calibration of Commercial Optical Satellites

Calibration and Validation for the Surface Biology and Geology (SBG) Mission Concept: Recommendations for a Multi‐Sensor System for Imaging Spectroscopy and Thermal Imagery

System characterization report on the Gaofen-6

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