Real Time ISAR Imaging Algorithm of Maneuvering Targets Based on the Fractional Fourier Transform

摘要：

Real time ISAR imaging of maneuvering targets is studied, when the target’s maneuverability is not too serious and the Doppler variation of scatterer sub-echoes can be approximated as a first order polynomial. A FRFT (fractional Fourier transform) based ISAR rangeinstantaneous Doppler (RID) imaging algorithm of maneuvering targets is presented. In this algorithm, the FRFT, instead of FFT, is employed to accomplish the cross-range resolution. The prior information of target motion is utilized to reduce its searching range and thus its computational complexity. Experiments on real data show its validity and efficiency. High quality ISAR images of maneuvering targets can be obtained with much less computations using this algorithm than other existing ones. It’s suitable for real time ISAR imaging of maneuvering targets.

作者: Liu Mingjing Gao Meiguo Fu Tuo

作者单位: School of Information Science and Technology,Beijing Institute of Technology,Beijing 100081,China

会议类型: 国际会议

会议名称: 首届亚太合成孔径雷达会议(1st Asian and Pacific Conference on Synthetic Aperture Radar Proceedings)

会议地点: 安徽黄山

会议语种:英文

在线出版日期: 2007-11-05（万方平台首次上网日期，不代表论文的发表时间）