为确保重要目标的信息安全，提出一种基于脉间分段随机移频的合成孔径雷达（SAR）干扰技术，该技术可在距离向产生若干条似噪干扰条带，脉间分段数决定条带的个数，移频量决定条带的位置和宽度，克服固定移频干扰无法掩护分布式目标的缺点，实现随机移频干扰条带单一的突破，且移频量的随机变化使得SAR无法找出移频规律，难以采取相应的对抗措施。针对干扰技术的特点，建立了具体的应用模型，给出该技术的实施步骤和方法。仿真实验验证了上述理论和方法的有效性和优越性。
Abstract
In order to ensure the safety of intelligence in important place, a jamming approach to synthetic aperture radar (SAR) based on inter-pulse subsection random frequency-shift technique is presented. The technique can produce several noise-like jamming swathes in range direction, of which number is determined by the number of inter-pulse subsection. The position and width of the jamming swathe are determined by frequency shift. The proposed technique overcomes the defect of the conventional fixed frequency-shift jamming which can’t protect distributed target, and produces several jamming swathes compared with random frequency-shift technique which can produce only one jamming swathe. Meanwhile, because of the random change in frequency shift, it is difficult for SAR to find the frequency shift rule and take the corresponding countermeasures. An application model is established, and the implementation steps and method of the technique are provided. The availability and advantages of this method are proved through the simulation experiments.
关键词
雷达工程 /
随机移频 /
分段 /
合成孔径雷达
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Key words
radar engineering /
randomly-shift-frequency /
subsection /
synthetic aperture radar
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基金
国家自然科学基金项目（61401472、61132008）
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参考文献
［1］ LinX H, Xue G Y, Liu P G. A jamming strategy against synthetic aperture radar with varieties of squint angles and wide beams ［C］∥Proceedingsof Multispectral Imaging Acquisition, Processing and Analysis. Wuhan, Hubei, China: IEEE, 2013：91-96.
［2］ CaiX F, Shen Y Q, Song J S, et al. Researches on deployment scheme of SAR jammers in important place protection［C］∥Proceedings of 2nd Asian-Pacific on Synthetic Aperture Radar. Xi'an Shaanxi, China: IEEE, 2009：518-521.
［3］ 刘永才，王伟，潘小义，等. 基于延迟-移频的SAR有源欺骗干扰有效区域研究［J］.雷达学报，2013，2 (1)：46-52.
LIU Yong-cai，WANG Wei，PAN Xiao-yi，et al. Effective region of active decoy jamming to SAR based on time-delay doppler-shift method ［J］. Journal of Radars，2013，2 (1)：46-52. (in Chinese)
［4］ ChenH R. FMCW radar jamming techniques and analysis ［D］. Monterey, California，US：Naval Postgraduate School，2013.
［5］ LiuY L，Gong S X，Wei X Z. Deceptive moving targets jamming to SAR based on airborne platform［C］∥Proceedings of 11th International Conference on Signal Processing. Beijing, China: IEEE, 2012：1905-1909.
［6］ JiaoS H，Liu M Z，Dong W S. Evaluation of jamming effect on SAR based on textural feature［C］∥Proceedings of 2nd International Conference on Information Communication and Management. Hong Kong, China: IACSIT, 2012：13-18.
［7］ 黄洪旭，周一宇. 干扰合成孔径雷达的时延脉间抖动转发干扰模式研究［J］. 兵工学报，2012，33 (9)：1031-1035.
HUANG Hong-xu，ZHOU Yi-yu. Study on time-delay inter-pulse jitter repeater jamming style to interfere synthetic aperture radar ［J］. Acta Armamentarii，2012，33 (9)：1031-1035. (in Chinese)
［8］ 黄洪旭，黄知涛，吴京，等. 对合成孔径雷达的步进移频干扰［J］. 宇航学报，2011，32(4)：898-902.
HUANG Hong-xu，HUANG Zhi-tao，WU Jing，et al. Stepped-shift frequency jamming to SAR ［J］. Journal of Astronautics，2011，32(4)： 898-902. (in Chinese)
［9］ YangY X, Zhao H C, Di C. Analysis of equivalent antenna based on FDTD method ［J］. Defence Technology, 2014, 10(3):304-307.
［10］ 张煜，杨绍全，郑文秀. 对解线调的ISAR的脉冲加权调频干扰［J］.系统工程与电子技术，2008，30(2)：249-252.
ZHANG Yu，YANG Shao-quan，ZHENG Wen-xiu. Pulse weighted frequency modulation jamming technique countering ISAR ［J］. Systems Engineering and Electronics，2008，30(2)：249-252. (in Chinese)
［11］ 吴一戎，胡东辉. 一种新的合成孔径雷达压制干扰方法［J］. 电子与信息学报，2002，24(11)：1664-1667.
WU Yi-rong，HU Dong-hui. A new noise jamming approach to SAR ［J］. Journal of Electronics & Information Technology，2002，24(11)：1664-1667. (in Chinese)
［12］ CaiX F，Yin W G，Song J S, et al. Research on tactical indexes of anti-SAR equipment in position protection［C］∥ Proceedings of 2nd Asian-Pacific on Synthetic Aperture Radar. Xi'an, Shaanxi, China: IEEE, 2009：846-853.
［13］ DumoerK，Cooper P S，Wons A F. Spaceborne synthetic aperture Radar and noise jamming ［C］∥Proceedings of IEEE Radar Conference. Edinburgh, UK: IEEE,1997：36-42.
［14］ 沈爱国，姜秋喜. 基于复卷积的超宽带SAR干扰技术［J］. 中国电子科学研究院学报，2009，4(3)：278-282.
SHEN Ai-guo，JIANG Qiu-xi. UWB SAR jamming technique based on complex convolution ［J］. Journal of China Academy of Electronics and Information Technology，2009，4(3)：278-282. (in Chinese)
［15］ LuanJ，Yuan Y N. Simulation and effectiveness analysis of jamming on inverse synthetic aperture radar ［J］. Advanced Materials Research，2013，765/766/767(4)：2762-2765.
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脚注
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