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Detection of Artificial Corner Reflector on SAR Images

Lixia Gong(1), Jingfa Zhang(1) and Luo Yi(1)

(1) Institute of Crustal Dynamics, CEA, Postbox 2855, Beijing, 2855, Beijing, China

Abstract

Artificial corner reflectors is so stable on SAR acquisitions that it helps to calibrate a SAR image and also acts as a stable target in PS InSAR experiments. Six corner reflectors (CR) are set up in Dengxiong, Tibet to study the slight crustal activity there. Complex terrain and ground objects make the CRs do not look like the simulated ones on SAR image. So it is difficult to detect the reflectors properly. How to detect the corner reflectors on ENVISAT ASAR images is discussed in this paper. Firstly the rough location of an individual CR is determined on intensity images with the help of coarse coordinates provided by portable GPS and relative position between the CR and typical ground objects. Then a slide window is used to detect the possible targets which conform to the simulated CR images. Lastly relative position between CRs is used to adjust position of every CR. CR detection is the basis of the following research.

Abstract: Artificial Corner Reflector, SAR

 

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry