摘要
近年来,正交频分复用(OFDM)信号由于具有正交性以及大带宽特性被广泛应用于合成孔径成像(SAR)研究中。相比传统SAR成像,由于其信号的独特性,OFDM SAR在成像上具有一定优势,但也面临着很多挑战。该文根据天线配置的不同,分别对单天线OFDM SAR成像和多天线MIMO OFDM SAR成像所面临的问题进行了梳理与总结,重点讨论了基于OFDM信号和基于循环前缀(CP)OFDM信号的SAR/MIMO SAR成像方法,并分析了OFDM SAR未来的可能发展方向。
In recent years, Orthogonal Frequency Division Multiplexing(OFDM) signal has been widely used in Synthetic Aperture Radar(SAR) imaging research due to its orthogonality and large bandwidth. Compared with the traditional SAR, OFDM SAR has certain advantages in imaging applications because of its unique signal characteristics. Nevertheless, OFDM SAR faces many challenges. In this paper, on the basis of different antenna configurations, the problems and studies of single-antenna OFDM SAR imaging and multi-antenna MIMO OFDM SAR imaging are reviewed. The imaging methods of SAR/MIMO SAR based on OFDM and cyclic prefix OFDM signals are discussed, and some possible future research directions of OFDM SAR are presented.
作者
张天贤
夏香根
ZHANG Tianxian;XIA Xiang-Gen(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;Department of Electrical and Computer Engineering,University of Delaware,Newark DE 19716,USA)
出处
《雷达学报（中英文）》
CSCD
北大核心
2020年第2期243-258,共16页
Journal of Radars
基金
国家自然科学基金(61971109)
中央高校基本业务费(2672018ZYGX2018J009)。
