| 对合成孔径雷达的步进移频干扰 |
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| 引用本文： | 黄洪旭,黄知涛,吴京,周一宇.对合成孔径雷达的步进移频干扰[J].宇航学报,2011,32(4). |
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| 作者姓名： | 黄洪旭 黄知涛 吴京 周一宇 |
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| 作者单位： | 1. 中南林业科技大学计算机与信息工程学院,长沙,410004
2. 国防科技大学电子科学与工程学院,长沙,410073 |
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| 摘 要： | 为了使压制干扰获得更多的SAR匹配处理增益,从而进一步降低干扰功率,提出了一种脉内脉间二维部分相干干扰:步进移频干扰.该干扰在保留信号脉内脉间相位特性的同时,让干扰载频在脉间步进递增或递减变化,人为产生距离向和方位向的耦合效应.理论分析和仿真实验表明,该干扰可同时获得SAR在距离向和方位向的部分匹配处理增益,因而降低了干扰功率需求.此外,该干扰的SAR成像输出为一个干扰区域,无需复杂的复合调制即可作为压制干扰掩护分布式目标,干扰实施简单,是一种有效的SAR压制干扰方式.
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| 关 键 词： | 合成孔径雷达 压制干扰 步进移频干扰 |
Stepped-Shift-Frequency Jamming to SAR |
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| HUANG Hong-xu,HUANG Zhi-tao,WU Jing,ZHOU Yi-yu.Stepped-Shift-Frequency Jamming to SAR[J].Journal of Astronautics,2011,32(4). |
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| Authors: | HUANG Hong-xu HUANG Zhi-tao WU Jing ZHOU Yi-yu |
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| Institution: | HUANG Hong-xu1,HUANG Zhi-tao2,WU Jing2,ZHOU Yi-yu2(1.School of Computer and Information Engineering,Center South University of Forest and Technology,Changsha 410004,China,2.School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | This work is concerned with developing suppression jamming so as to reduce the jamming power.A new jamming style,stepped-shift-frequency jamming,is put forward here.While keeping the inter-intra pulse phase characteristic of SAR signal,the carrier frequency of the interference is stepped between pulse to pulses to generate the coupling effect between range and cross-range.The theoretical analysis and simulation experiments show that this interference is partly coherent with SAR both in range and in cross-ra... |
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| Keywords: | Synthetic Aperture Radar(SAR) Suppression jamming Stepped-shift-frequency jamming |
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