Fast Two-Dimensional Imaging of Scattering Centers Using the Nonuniform FFT
Radar imaging of target scattering centers can be of great diagnostic utility. Conventionally, the radar image has been produced by a technique widely used in computer-aided tomography (CAT), e.g. the filtered backprojetion (FBP) algorithm. FBP reconstruction produces high quality images by handling the measured data directly in polar format. However, the FBP algorithm is more computationally complex than the direct Fourier methods. This paper develops fast twodimensional (2-D) imaging of scattering centers using a nonuniform fast Fourier transform (NUFFT) algorithm. The proposed method is first compared to the conventional FBP approach on simulated data and then applied to real data sets measured on the RCS test range. Results suggest that the NUFFT method can produce more precise images and requires much less computational time than the FBP algorithm.
Shiyong Li Chong Li Bocheng Zhu
Institute of Applied Electronics, Peking University, Beijing, China
国际会议
成都
英文
1204-1207
2010-05-08（万方平台首次上网日期，不代表论文的发表时间）