A new deramping algorithm for airborne squint-mode spotlight SAR data processing
This paper presents a new airborne squint-mode spotlight SAR data focusing algorithm based on a twostep processing strategy that combines the advantages of the efficiency of spectral analysis (SPECAN) algorithm and the precision of wavenumber domain (WD) algorithm. The first step of the proposed algorithm implements a modified SPECAN processing to the range compressed echo signal. This operation can eliminate azimuth spectrum folding effect and migrate and scale the azimuth data support. Then the residual and precision focusing of the SAR data is achieved by applying the WD algorithm requiring some modifications and implemented in the frequency domain.Finally,experiments carried out on simulated data confirm the validity of the presented approach.
Spotlight SAR,squinted-mode raw data focusing spectral analysis (SPECAN) algorithm wavenumber domain (WD) algorithm
An Daoxiang Huang Xiaotao Zhou Zhimin
School of Electric Science and Engineering,National University of Defense Technology,ChangSha,China
国际会议
2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar(第二届亚太合成孔径雷达会议)
西安
英文
84-88
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）