Research on the Performance of Sub-Band STAP for Wideband Interference Suppression
Advanced Materials Research(2013)
Abstract
Sub-band space-time adaptive processing (STAP), which decomposes the wideband signal using sub-band filter bank, is the common intuitive way to suppress wideband interference. Based on studying angel-frequency distribution characteristics of wideband, sub-band interference and echo signal in space-time plane, the paper gives the physical significance of sub-band interference and echo signals space-time distribution and thus reveals theoretically the fundamental reason for the poor performance of sub-band STAP. Furthermore, the paper outlines the novel way for wideband linear frequency modulation (LFM) interference cancellation in the three-dimensional space-fractional Fourier domain.
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Key words
fractional fourier transform,linear frequency modulation (lfm) signal,space-time distribution,sub-band stap,wideband interference suppression
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