Title :
RFI Suppression in Ultrawideband SAR Using an Adaptive Line Enhancer
Author :
Vu, Viet T. ; Sjögren, Thomas K. ; Pettersson, Mats I. ; Håkansson, Lars ; Gustavsson, Anders ; Ulander, Lars M H
Author_Institution :
Blekinge Inst. of Technol., Karlskrona, Sweden
Abstract :
In this letter, we propose an approach to suppress radio-frequency interference (RFI) in ultrawideband (UWB) low-frequency synthetic aperture radar (SAR). According to the proposal, RFI is suppressed by using an adaptive line enhancer controlled by the normalized least mean square algorithm. The approach is tested successfully on real UWB low-frequency SAR data. In order to keep the computational burden down, possible ways to integrate the RFI suppression approach into SAR imaging algorithms are also suggested.
Keywords :
interference suppression; least mean squares methods; radiofrequency interference; synthetic aperture radar; ultra wideband radar; RFI suppression; UWB low-frequency SAR data; adaptive line enhancer; least mean square algorithm; radiofrequency interference; ultrawideband low-frequency synthetic aperture radar; Adaptive control; Interference suppression; Least mean square algorithms; Line enhancers; Programmable control; Proposals; Radio frequency; Radiofrequency interference; Synthetic aperture radar; Ultra wideband technology; Adaptive line enhancer (ALE); CARABAS-II; normalized least mean square (LMS) (NLMS); radio-frequency interference (RFI); synthetic aperture radar (SAR); ultrawideband (UWB);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2010.2045633
