电子学报 ›› 2013, Vol. 41 ›› Issue (9): 1665-1671.DOI: 10.3969/j.issn.0372-2112.2013.09.001

• 学术论文 •    下一篇

FMCW SAR运动补偿处理技术研究

贾高伟, 常文革   

  1. 国防科技大学电子科学与工程学院, 湖南长沙 410073
  • 收稿日期:2012-07-18 修回日期:2013-05-20 出版日期:2013-09-25 发布日期:2013-09-25
  • 作者简介:贾高伟 男,1989年出生,博士研究生,研究方向为高分辨SAR成像,运动补偿算法与实现.E-mail:jiagaoweinudt@gmail.com;常文革 男,1965年出生,教授,博士生导师,研究方向包括超宽带雷达成像与处理,实时信号处理,被动干涉SAR等. E-mail:changwenge@nudt.edu.cn
  • 基金资助:

    国家自然科学基金(No.61072116)

Analysis of Motion Compensation for FMCW Synthetic Aperture Radar

JIA Gao-wei, CHANG Wen-ge   

  1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, China
  • Received:2012-07-18 Revised:2013-05-20 Online:2013-09-25 Published:2013-09-25

摘要: 调频连续波(Frequency Modulated Continuous Wave,FMCW)技术与合成孔径雷达(Synthetic Aperture Radar,SAR)技术的结合,促进了小型化、低成本、低功耗、高分辨率成像传感器的发展.本文建立了非理想情况下FMCW SAR的回波信号模型,分析了FMCW SAR运动补偿处理同脉冲体制SAR的区别;提出了完整的三维误差补偿流程,并分别论证了前向运动误差及沿视线方向(Line of Sight,LOS)方向运动补偿处理方法;文中最后采用FMCW SAR实测数据对所提处理流程进行了验证.

关键词: 调频连续波, 合成孔径雷达, 运动补偿, 距离多普勒, 频率变标

Abstract: The combination of frequency modulated continuous wave(FMCW)and synthetic aperture radar(SAR)leads to the rapid development of the compact,low-cost,low power imaging sensors.The model of imaging in the presence of motion error is presented firstly,based on which the difference of motion compensation between FMCW SAR and pulsed SAR is compared.The integrated processing flow of motion compensation is proposed,contains the compensation along track and in the line of sight.The experimental FMCW SAR data and focused SAR images verify the feasibility of the proposed method.

Key words: frequency modulated continuous wave, synthetic aperture radar, motion compensation, range Doppler, frequency scaling

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