夏香根2,,
1.电子科技大学信息与通信工程学院 成都 611731
2.美国特拉华大学电子与计算机工程系 纽瓦克市 DE 19716
基金项目:国家自然科学基金 (61971109)，中央高校基本业务费 (2672018ZYGX2018J009)
详细信息
作者简介:张天贤(1985–)，男，广东云浮人，博士，电子科技大学副教授，硕士生导师。主要研究方向包括：博弈进化、多功能一体资源管控、任务规划、多功能波形设计等。E-mail: txzhang@uestc.edu.cn
夏香根(1963–)，男，江苏高淳人，美国特拉华大学教授，IEEE Fellow，曾担任过IEEE Trans. SP, IEEE Trans. WC, IEEE Trans. MC和IEEE Trans. VT等国际期刊副主编。主要研究方向包括：无线通信和雷达信号处理。E-mail: xxia@ee.udel.edu
通讯作者:张天贤 txzhang@uestc.edu.cn
夏香根 xxia@ee.udel.edu
责任主编：梁兴东 Corresponding Editor: LIANG Xingdong中图分类号:TN958
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出版历程
收稿日期:2019-12-22
修回日期:2020-04-22
网络出版日期:2020-05-08
An Overview of OFDM SAR Imaging Methods
ZHANG Tianxian1,,,XIA Xiang-Gen2,,
1. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2. Department of Electrical and Computer Engineering, University of Delaware, Newark DE 19716, USA
Funds:The National Natural Science Foundation of China (61971109), The Fundamental Research Funds for the Central Universities (2672018ZYGX2018J009)
More Information
Corresponding author:ZHANG Tianxian, txzhang@uestc.edu.cn;XIA Xiang-Gen, xxia@ee.udel.edu
摘要
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。
关键词:正交频分复用/
合成孔径成像/
循环前缀-正交频分复用
Abstract: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.
Key words:Orthogonal frequency division multiplexing (OFDM)/
Synthetic aperture imaging/
CP-OFDM
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