The Effect of Notch Filter on RFI Suppression

• 作者: Jianyang LI Wenge CHANG Xiangyang LI
• 来源期刊: 无线传感网络(英文)
• 学科: 医学
• 关键词: RFI Supression Matched FILTER NOTCH FILTER SAR
• 年，卷（期）: 2009,（3）
• 页码范围: 196-205
• 页数: 10页
• 分类号: R73

摘要

Radio Frequency Interference (RFI) suppression is an important technique in the ultra-wideband synthetic aperture radar (UWB SAR). In this paper, we mainly analyze the performance of a notch filter for RFI sup-pression. The theoretical output from notch filter is presented based on RFI signal’s narrowband property. The research conclusion shows that the notch filter has significant effect on sidelobes of the system response, which might be considered to be false targets, however it has little effect on the resolution of the system re-sponse. The theoretical result is verified by simulation and experimental data processing both in one dimen-sion (range dimension) and in two dimensions (range and azimuth dimension).