Title :
Investigations on the nature of Persistent Scatterers based on simulation methods
Author :
Auer, Stefan ; Gernhardt, Stefan ; Bamler, Richard
Author_Institution :
Remote Sensing Technol. (LMF), Tech. Univ. Munchen, München, Germany
Abstract :
Using long-time coherent scatterers in SAR data, called Persistent Scatterers (PSs), the deformation signal of objects can be measured from space. However, the nature of the corresponding image signatures is not known in detail. Methods focused on the simulation of highly detailed object models help to understand the origin of PSs. In this paper, simulated SAR data are geometrically linked to PSs for one test site. Thereafter, single PSs are selected and identified in the simulated 3D model. The case study indicates that a high number of PSs lack of geometrical correspondence to building features. Moreover, it is shown that the often observed occurance of PSs located below ground level is not due to processing errors but is a systematic effect caused by fivefold reflection.
Keywords :
deformation; radar imaging; radar interferometry; remote sensing by radar; structural engineering; synthetic aperture radar; ground level; image signatures; long-time coherent scatterers; object deformation signal; persistent scatterers; simulated 3D model; simulated SAR data method; systematic effect; Concrete; Glass; Radar; Rail transportation; Solid modeling; Three dimensional displays;
Conference_Titel :
Urban Remote Sensing Event (JURSE), 2011 Joint
Conference_Location :
Munich
Print_ISBN :
978-1-4244-8658-8
DOI :
10.1109/JURSE.2011.5764719