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| 一种改进的FMCW SAR RD成像算法 | |
| 引用本文： | 王颖,曲长文,宋军,李青山.一种改进的FMCW SAR RD成像算法[J].海军航空工程学院学报,2008,23(5):493-496. |
| 作者姓名： | 王颖 曲长文 宋军 李青山 |
| 作者单位： | 1. 海军航空工程学院电子信息工程系,山东烟台,264001;63891部队,河南洛阳,473001 2. 海军航空工程学院电子信息工程系,山东烟台,264001 3. 泰安军分区第二干休所,山东泰安,271000 4. 63891部队河南洛阳473001 |
| 摘 要： | FMCWSAR将调频连续波与合成孔径成像技术结合于一体，是一种新近被提出来的成像雷达体制，它以其体积小、重量轻、成本低、分辨率高等一系列优点，引起越来越多的关注。然而，在FMCWSAR系统中，雷达连续不断地发射信号，调制信号周期相对较长，停一走（STOP AND GO）近似不再成立，所以要用合适的算法来实现成像。针对FMCW SAR的特点，详细推导了停一走近似失效时FMCW SAR的信号模型及处理过程，提出了一种改进的RD算法。此方法是通过补偿连续运动引入的多普勒频移，消除连续运动的影响。 |
| 关 键 词： | 合成孔径雷达 调频连续波 停走近似 成像 |
An Improved RD Imaging Algorithm for FMCW SAR |
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| WANG Ying,QU Chang-wen,SONG Jun and LI Qing-shan.An Improved RD Imaging Algorithm for FMCW SAR[J].Journal of Naval Aeronautical Engineering Institute,2008,23(5):493-496. | |
| Authors: | WANG Ying QU Chang-wen SONG Jun and LI Qing-shan |
| Institution: | WANG Ying1,2,QU Chang-wen1,SONG Jun3,LI Qing-shan2 (1.Department of Electronic , Information Engineering,NAAU,Yantai Sh,ong 264001,China,2.The 63891st Unit of PLA,Luoyang Henan 471003,3.No.2 Army Leading Cadres,Taian Military Branch District,Taian Sh,ong 271000,China) |
| Abstract: | Frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR) combining FMCW technique with synthetic aperture imaging methods is a newly proposed imaging radar system. It has the advantages such as small cubage, light weight, cost-effective, high-resolution, etc. So there is a growing interest in the frequency modulated FMCW SAR. However, for FMCW SAR, the platform continuously moves while transmitting and receiving signal. The duration of the transmitted pulse increases, the stop-and-go approx... |
| Keywords: | synthetic aperture radar (SAR) frequency modulated continuous wave (FMCW) stop-and-go approximation imaging |
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