Title :
Ghost Persistent Scatterers Related to Multiple Signal Reflections
Author :
Auer, Stefan ; Gernhardt, Stefan ; Bamler, Richard
Author_Institution :
Dept. of Remote Sensing Technol., Tech. Univ. Munchen, Munich, Germany
Abstract :
Persistent scatterer interferometry using stacks of very high resolution synthetic aperture radar (SAR) data reveals that single or even patterns of scatterers representing building structures may wrongly be localized below the ground level. In this letter, a case study on a test building model is presented using 3-D SAR simulation methods in order to explain the underlying localization problem. The case study indicates that Ghost-PSs are likely to be related to reflection levels that are higher than three. Moreover, the temporal stability of the amplitude of fivefold bounce signals is confirmed for a SAR data stack.
Keywords :
geophysical image processing; geophysical techniques; remote sensing by radar; synthetic aperture radar; 3D SAR simulation methods; SAR data stack; TerraSAR-X; building structures; ghost persistent scatterers; multiple signal reflections; persistent scatterer interferometry; reflection levels; synthetic aperture radar; Radar imaging; Remote sensing; Solid modeling; Synthetic aperture radar; Windows; 3-D synthetic aperture radar (SAR) simulation; Multiple signal reflections; TerraSAR-X; persistent scatterer interferometry (PSI);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2011.2134066
