TY - JOUR
T1 - Narrow-band interference suppression for SAR based on independent component analysis
AU - Zhou, Feng
AU - Tao, Mingliang
AU - Bai, Xueru
AU - Liu, Jianqiang
PY - 2013
Y1 - 2013
N2 - The narrow-band interference (NBI) is a common jamming signal against synthetic aperture radar (SAR), which can degrade the imaging quality severely. This paper proposes a new method for NBI suppression in the data domain based on the independent component analysis (ICA). In this method, echoes contaminated by the NBI are identified in the frequency domain. Next, time filtering and whitening are performed to the identified echoes. Then, the ICA is carried out to decompose the echoes into a series of basis signals, and the jamming components are selected by thresholding. Finally, the NBI is reconstructed and subtracted from the echoes, and the well-focused SAR imagery is obtained by conventional imaging methods. The proposed method copes well with the time-varying NBI with little signal loss. Results of simulated and measured data have proved the validity of the proposed method.
AB - The narrow-band interference (NBI) is a common jamming signal against synthetic aperture radar (SAR), which can degrade the imaging quality severely. This paper proposes a new method for NBI suppression in the data domain based on the independent component analysis (ICA). In this method, echoes contaminated by the NBI are identified in the frequency domain. Next, time filtering and whitening are performed to the identified echoes. Then, the ICA is carried out to decompose the echoes into a series of basis signals, and the jamming components are selected by thresholding. Finally, the NBI is reconstructed and subtracted from the echoes, and the well-focused SAR imagery is obtained by conventional imaging methods. The proposed method copes well with the time-varying NBI with little signal loss. Results of simulated and measured data have proved the validity of the proposed method.
KW - Independent component analysis (ICA)
KW - jamming suppression
KW - narrow-band interference (NBI)
KW - synthetic aperture radar (SAR)
UR - http://www.scopus.com/inward/record.url?scp=84885191183&partnerID=8YFLogxK
U2 - 10.1109/TGRS.2013.2244605
DO - 10.1109/TGRS.2013.2244605
M3 - 文章
AN - SCOPUS:84885191183
SN - 0196-2892
VL - 51
SP - 4952
EP - 4960
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
IS - 10
M1 - 6481436
ER -