| 引用本文: | 宋志勇,祝依龙,肖怀铁,等.基于频域分离的拖曳式诱饵与目标辨识.[J].国防科技大学学报,2011,33(5):134-139.[点击复制] |
| SONG Zhiyong,ZHU Yilong,XIAO Huaitie,et al.Distinguishing the Towed Radar Active Decoy and Target Based on the Separation in Doppler[J].Journal of National University of Defense Technology,2011,33(5):134-139[点击复制] |
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| 基于频域分离的拖曳式诱饵与目标辨识 |
| 宋志勇, 祝依龙, 肖怀铁, 卢再奇 |
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(国防科技大学 ATR重点实验室，湖南 长沙 410073)
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| 摘要: |
| 诱饵与目标的辨识是拖曳式诱饵干扰对抗的基本问题。干扰过程中导弹、目标、诱饵三角几何关系的变化导致了目标与诱饵的多普勒频率存在差异，为从频域实现目标与诱饵的分辨提供了可能。在详细分析迎头及尾追场景下目标与诱饵频域可分性的基础上，采用L类魏格纳分布(LWVD)，利用其能够提高方位向分辨率和抑制交叉项的优点，实现了导引头波束内目标与诱饵的频域分离，然后结合拖曳式诱饵干扰回波的特点以及攻击场景等辅助信息实现了二者的身份辨识。仿真实验验证了该方法的有效性。 |
| 关键词: 拖曳式诱饵 多普勒频差 L类魏格纳分布 多普勒分离 身份辨识 |
| DOI： |
| 投稿日期：2011-04-15 |
| 基金项目: |
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| Distinguishing the Towed Radar Active Decoy and Target Based on the Separation in Doppler |
| SONG Zhiyong, ZHU Yilong, XIAO Huaitie, LU Zaiqi |
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(ATR Key Laboratory, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Distinguishing the decoy and the target is the fundamental problem in countering the Towed Radar Active Decoy (TRAD) jamming. In the course of TRAD jamming, the triangular geometry relationship among the missile, the target and the decoy changes. That brings about the differences of Doppler frequency between decoy and target. Thus it provides the possibility to distinguish the target and decoy in frequency domain. Based on the analysis of the frequency separability in the head-on attack and chase attack scenarios, the L class of Wigner Ville Distribution (LWVD), with the advantages of improving the azimuth resolution and inhibiting the cross terms, was adopted to separate the target and decoy. Then by combining the auxiliary information of echo characteristics and attack scenarios, the identity recognition between the target and the decoy was achieved. The simulation results validated the availability. |
| Keywords: towed radar active decoy doppler difference L class of wigner ville distribution doppler separation identity recognition |
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