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http://dx.doi.org/10.5140/JASS.2009.26.4.659

A Analysis for Calibration Site Selection of SAR Satellite  

Keum, Jung-Hoon (KOMPSAT-5 Program Office, Korea Aerospace Research Institute(KARI))
Ra, Sung-Woong (Division of Electrical Engineering and Information & Communication Engineering, Chungnam National University)
Publication Information
Journal of Astronomy and Space Sciences / v.26, no.4, 2009 , pp. 659-666 More about this Journal
Abstract
CALVAL (Calibration & Validation) shall consider payloads characteristics because satellites have one and/or several payloads in order to perform their various missions. SAR satellite, one of various satellite, shall need to use special ground targets, which can reflect the radar signal to the satellite, because it can see objects with reflected radar signal. Therefore, the special ground targets, which are called generally reflector(corner reflector is the one of them) shall be installed and constructed on the ground path. The satellite must access the targets on that path. To accomplish successful calibration, the CALVAL site including corner reflectors will be surveyed and analyzed using various environment characteristics. In this paper, CALVAL site including point targets(corner reflector) for absolute radiometric calibration except one including distributed targets for relative radiometric calibration has been deeply considered.
Keywords
calibration & validation; calibration site; corner reflector; SAR satellite; backscattering coefficient; RCS; NDVI;
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