电子学报2011，Vol.39Issue(7)：1581-1588,8.
基于STFT和WT的SAR干扰抑制算法
Interference Suppression Algorithm for SAR Based on Short-Time Fourier Transform and Wavelet Transform
摘要
Abstract
As the two most common forms of interference in synthetic aperture radar (SAR). Narrow-band interference (NBI) and wide-band interference (WBI) significantly reduce the quality of SAR images. Based on the analysis of the time-frequency concentration of NBI and WBI, an interference suppression algorithm for SAR is proposed. In the algorithm, SAR echo data is transformed into the short time Fourier transform spectrum domain, and then it is transformed into the wavelet domain. In the wavelet domain, the constant false alarm rate (CFAR) algorithm is employed to operate interference identification and suppression. After that, a clear and noninterference SAR image can be obtained by using a conventional SAR imaging algorithm. This algorithm brings less loss to useful data during interference suppression,and can efficiently suppress the time-varying NBI and WBI.The processing results of the simulation and the real measured data prove the effectiveness of this alaorithm.关键词
合成孔径雷达/窄带干扰/宽带干扰/干扰抑制/小波变换/短时傅里叶变换Key words
synthetic aperture radar (SAR)/narrow-band interference (NBI)/wide-band interference (WBI)/interference suppression/wavelet transform (WT)/short time Fourier transform (STFT)分类
信息技术与安全科学引用本文复制引用
张双喜,张磊,刘艳阳,邢孟道,保铮..基于STFT和WT的SAR干扰抑制算法[J].电子学报,2011,39(7):1581-1588,8.基金项目
武器装备预研重点基金(No.9140A21020609DZ01) （No.9140A21020609DZ01）
