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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5578

Title: Campaign for vicarious calibration of SumbandilaSat in Argentina
Authors: Vhengani, LM
Griffith, D
Lysko, M
Keywords: SumbandilaSat
CalVal
Vicarious calibration
Radiometric calibration
Reflectance-Based methodology
Issue Date: Jul-2011
Publisher: South African Institute of Physics
Citation: Vhengani, LM, Griffith, D and Lysko, M. 2011. Campaign for vicarious calibration of SumbandilaSat in Argentina. Conference of the South African Institute of Physics (SAIP), Saint George Hotel, Irene, 12-15 July 2011, pp 555-560
Series/Report no.: Workflow;6796
Abstract: The importance of calibrating satellite imagers has been explained in literature such as K Arai (2007) and K J Thome (2001). Calibration of satellite sensors (imagers) is crucial for data consistency, reliability and comparability. To perform a meaningful analysis of a satellite image, the Digital Numbers (DNs) of the image are first converted to absolute radiance by using the sensor-specific radiometric calibration coefficients. Satellite imagers are calibrated pre-launch and for continuous assessment, they are also calibrated post-launch. Various post-launch techniques exist including cross-sensor, solar, lunar and vicarious calibration. Vicarious calibration relies on in-situ measurements of surface reflectance and atmospheric transmittance to estimate Top-Of-Atmosphere (TOA) spectral radiance. A vicarious calibration field campaign was executed in Argentina to support monitoring of the radiometric response of the multispectral imager aboard SumbandilaSat. Results obtained using two Radiative Transfer Codes (RTCs) MODTRAN and 6SV are presented.
Description: Conference of the South African Institute of Physics (SAIP), Saint George Hotel, Irene, 12-15 July 2011
URI: http://www.saip.org.za/images/stories/documents/SAIP_Proceedings/SAIP2011_Proceedings.djvu
http://hdl.handle.net/10204/5578
ISBN: 978-1-86888-688-3
Appears in Collections:General science, engineering & technology

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