ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 ISPRS Göttingen, Germany 10.5194/isprsarchives-XXXIX-B1-145-2012 PRELIMINARY RESULTS OF THE COMPARISON OF SATELLITE IMAGERS USING TUZ GÖLÜ AS A REFERENCE STANDARD Özen H. 1 Fox N. 2 Gürbüz S. Z. 3 1 Deadman A. 2 Behnert I. 2 Harris P. 2 Yua L. 4 Griffith D. 5 Kaewmanee M. 6 Prakobya A. 6 Musana C. 6 Ponzoni F. 7 Lee D. 8 Lee Y. 8 Boucher Y. 9 Viallefont F. 9 Rolland P. 9 Helder D. 10 Leigh L. 10 Thome K. 11 Sterckx S. 12 Knaeps E. 12 Raeymaekers D. 12 Henry P. 13 TUBITAK UZAY, METU Campus, 06531 Ankara, Turkey NPL, TW11 0LW Teddington Middlesex, UK TOBB ETÜ, Dept. of Electrical and Electronics Eng., Söğütözü/Ankara, Turkey CMA, No.46, Zhongguancun Nandajie, Haidian District, Beijing, China CSIR, Moreletta St, Silverton 0184, South Africa GISTDA, Chaeng Wattana Road, Lak Si, Bangkok 10210, Thailand INPE, 12630-000 Cachoeira Paulista, Sao Paulo, Brazil KARI, 115 Gwahanno Yuseong Daejeon, Korea ONERA, BP74025, 2 Avenue Edouard Belin, FR-31055 Toulouse, France SDSU, Electrical Engineering, Brookings, SD 57007, USA NASA, Goddard Space Flight Center, Greenbelt, Maryland 20771, USA VITO, Boeretang 200 BE-2400 MOL, Belgium CNES, 18 Avenue Edouard Belin, 31401 Toulouse, France 23 07 2012 XXXIX-B1 145 148 Copyright: © 2012 H. Özen et al. 2012 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://isprs-archives.copernicus.org/articles/XXXIX-B1/145/2012/isprs-archives-XXXIX-B1-145-2012.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XXXIX-B1/145/2012/isprs-archives-XXXIX-B1-145-2012.pdf

Earth surfaces, such as deserts, salt lakes, and playas, have been widely used in the vicarious radiometric calibration of optical earth observation satellites. In 2009, the Infrared and Visible Optical Sensors (IVOS) sub-group of the Committee of Earth Observation Satellites (CEOS) Working Group on Calibration and Validation (WGCV) designated eight LANDNET reference sites to focus international efforts, facilitate traceability and enable the establishment of measurement "best practices." With support from the European Space Agency (ESA), one of the LANDNET sites, the Tuz Gölü salt lake located in central Turkey, was selected to host a cross-comparison of measurement instrumentation and methodologies conducted by 11 different ground teams across the globe. This paper provides an overview of the preliminary results of the cross-comparison of the ground-based spectral measurements made during the CEOS Land Comparison 13-27 August, 2010 with the simultaneous satellite image data acquisitions of the same site.