基于运动调制的SAR-GMTI余弦调相间歇采样假目标干扰
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摘要
为解决对SAR-GMTI系统的多运动目标逼真欺骗问题,提出一种干扰新方法。该方法先对截获的信号进行运动调制和余弦调相,并对其间歇采样后转发出去。干扰信号经SAR成像处理后可形成网状分布的逼真运动假目标干扰效果,经GMTI处理后假目标受多通道的抑制和对消的影响会出现增强区和削弱区,但不会被对消。仿真实验证明了该方法用于欺骗SAR-GMTI系统的正确性和有效性。
To solve the problem that how to product multi-high-vivid false moving targets for SAR-GMTI,a new jamming method was proposed. The method begins with motion modulation and cosinusoidal phase-modulation on intercepted SAR signals,intermittently sample,and then transmit them. The jamming signal after SAR imaging provides the jamming effect of reticular multi false moving targets. After GMTI processing,the amplitudes of false targets have enhanced and weakened areas under the influence of suppression and cancellation for multi-channel GMTI. Simulation results verify the analyses and its jamming effectiveness for SAR-GMTI.
To solve the problem that how to product multi-high-vivid false moving targets for SAR-GMTI,a new jamming method was proposed. The method begins with motion modulation and cosinusoidal phase-modulation on intercepted SAR signals,intermittently sample,and then transmit them. The jamming signal after SAR imaging provides the jamming effect of reticular multi false moving targets. After GMTI processing,the amplitudes of false targets have enhanced and weakened areas under the influence of suppression and cancellation for multi-channel GMTI. Simulation results verify the analyses and its jamming effectiveness for SAR-GMTI.
引文
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[11]吴晓芳,王雪松,卢焕章.对SAR的间歇采样转发干扰研究[J].宇航学报,2009,30(5):2043-2049.
[12]王雪松,刘建成,张文明,等.间歇采样转发干扰的数学原理[J].中国科学E辑(信息科学),2006,36(8):891-901.
[13]保铮,邢孟道,王彤.雷达成像技术[M].北京:电子工业出版社,2005:132-139.
[2] SJOGREN T K,VIET T V,PETTERSSON M I,et al. Suppression of clutter in multichannel SAR/GMTI[J]. IEEE Transactions on Geoscience and Remote Sensing,2014,52(7):4005-4013.
[3]张焕胜.机载SAR地面运动目标检测与成像技术研究[D].北京:中国科学院电子学研究所,2006.
[4]吴晓芳,李金梁,邢世其,等. SAR的箔条干扰技术研究[J].现代雷达,2010,32(7):58-62.
[5]李传中,苏卫民,顾红,等.改进的合成孔径雷达间歇采样转发干扰[J].电波科学学报,2014,29(6):1045-1050.
[6]张静克,代大海,邢世其,等.对调频斜率极性捷变SAR间歇采样转发干扰效果分析[J].系统工程与电子技术,2015,37(5):1030-1034.
[7]刘业民,李忠,代大海,等.基于微动调制的SAR新型有源复合干扰方法[J].现代防御技术,2011,39(4):84-89.
[8]吴晓芳,梁景修,王雪松,等. SAR-GMTI匀加速运动假目标有源调制干扰方法[J].宇航学报,2012,33(6):761-768.
[9]吴晓芳,王雪松,梁景修. SAR-GMTI高逼真匀速运动假目标调制干扰方法[J].宇航学报,2012,33(10):1472-1479.
[10]刘业民,李忠,代大海,等.基于微动调制的间歇采样转发干扰研究[J].宇航学报,2011,32(11):2417-2424.
[11]吴晓芳,王雪松,卢焕章.对SAR的间歇采样转发干扰研究[J].宇航学报,2009,30(5):2043-2049.
[12]王雪松,刘建成,张文明,等.间歇采样转发干扰的数学原理[J].中国科学E辑(信息科学),2006,36(8):891-901.
[13]保铮,邢孟道,王彤.雷达成像技术[M].北京:电子工业出版社,2005:132-139.