Title :
Front Wall Clutter Rejection Methods in TWI
Author :
Solimene, Raffaele ; Cuccaro, Antonio
Author_Institution :
Dipt. di Ing. Ind. e dell´ Inf., Seconda Univ. di Napoli, Aversa, Italy
Abstract :
Through-wall imaging is characterized by strong reflections due to the building front wall that can impair the detection of the obscured scatterers. To mitigate this drawback, wall clutter rejection methods can be employed before imaging. In this letter, a clutter rejection method based on data entropy is compared to other literature methods such as the average trace subtraction, the differential approach, and the subspace projection method. It is shown that the entropy-based method is as effective as the other methods in removing front wall contribution, but at same time, it avoids unwanted filtering of the field scattered by the targets.
Keywords :
electromagnetic wave reflection; electromagnetic wave scattering; entropy; interference suppression; radar clutter; radar imaging; TWI; entropy-based method; front wall clutter rejection method; obscured scatterer detection; reflection; through wall imaging; Arrays; Clutter; Entropy; Image reconstruction; Imaging; Radar imaging; Remote sensing; Clutter rejection; linear inverse scattering; through-wall imaging (TWI);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2013.2288491