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Research of Active Transponder application as Ground Control Point in Synthetic Aperture Radar Images  

Jeong, Ho-Ryung (한국항공우주연구원 자료처리검보정팀)
Oh, Tae-Bong (한국항공우주연구원 자료처리검보정팀)
Park, Duk-Jong (한국항공우주연구원 위성지상시스템개발팀)
Lee, Sun-Gu (한국항공우주연구원 자료처리검보정팀)
Lim, Hyo-Suk (한국항공우주연구원 위성활용실)
Publication Information
Aerospace Engineering and Technology / v.11, no.2, 2012 , pp. 164-170 More about this Journal
Abstract
This paper presents that the comparison results of AT (Active Transponder) positions obtained from different measurements: the result of GPS device and evaluated position from the SAR (Synthetic Aperture Radar) image, and active transponders can be useful as GCPs(Ground Control Points) in SAR images. The X-band AT are installed on the wide-and-flat area to improve SCR(signal-to-clutter ration), and activated to represent impulse response function in order to operate as one point target in SAR images. Cosmo-SkyMed operating at X-band frequency are used to provide SAR images of AT. The comparison of AT position is performed by using the result of GPS device field measurement and AT SAR images. ENVI-SARscape S/W is used to evaluate AT position in the SAR images. From the comparison, it is shown that AT are useful as GCPs for SAR images.
Keywords
SAR; GCP; active transponder;
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