现代电子技术2011，Vol.34Issue(19)：7-10,4.
基于频域滤波的分数阶Fourier变换的目标检测
Target Detection of Fractional Fourier Transform Based on Filtering in Frequency-domain
摘要
Abstract
A FRFT weak target detection method based on filtering in frequency-domain is proposed through analyzing the echo signal of the target in sea. The method intercalated a band-pass filter in frequency-domain to filter the echo signal in frequency-domain and filter clutter, and then transformed the signal from FRFT domain to time domain, at this time, FRFT detected the target preferably. Experiment using the IPIX data shows that the method has remarkably advantages in increasing the signal-clutter FRFT peak value difference and enhancing the SCR. When the SCR is reduced to -10 dB, the method can still detect targets easily.关键词
分数阶Fourier变换/杂波抑制/滤波/海杂波Key words
fractional Fourier transforms clutter restrain/ filter/ sea clutter分类
信息技术与安全科学引用本文复制引用
尹德强,李文海,宋有为..基于频域滤波的分数阶Fourier变换的目标检测[J].现代电子技术,2011,34(19):7-10,4.基金项目
国家自然科学基金资助(60802088) （60802088）
航空科学基金(20095184004)资助 （20095184004）
