SAR Autofocus Based on the Instantaneous Frequency Estimation

摘要：

A new autofocus method for synthetic aperture radar (SAR) application is proposed based on the instantaneous frequency estimation. The short-time Fourier transform (STFT) is utilized to estimate the instantaneous frequency. Then the PGA technique is applied with single iteration. The proposed method can perform well in lower signal-to-noise ratio (SNR) and it needs less computation cost than the conventional PGA technique.Simulation results demonstrate the validity of the proposed approach.

关键词： autofocus synthetic aperture radar (SAR) instantaneous frequency estimation

作者: Xue Mei Li Ran Tao Yan Lei Li

作者单位: School of Information and Electronic,Beijing Institute of Technology,Beijing 100081,China Dept of El School of Information and Electronic,Beijing Institute of Technology,Beijing 100081,China

会议类型: 国际会议

会议名称: 2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)

会议地点: 西安

会议语种:英文

页码: 417-420

在线出版日期: 2009-10-26（万方平台首次上网日期，不代表论文的发表时间）