系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (12): 3587-3594.doi: 10.12305/j.issn.1001-506X.2022.12.01

• 电子技术 •    

AFSS反射器双脉冲周期间歇调制方法

孔亚盟*, 王国玉, 冯德军   

  1. 国防科技大学电子科学学院, 湖南 长沙 410073
  • 收稿日期:2021-07-26 出版日期:2022-11-14 发布日期:2022-11-24
  • 通讯作者: 孔亚盟
  • 作者简介:孔亚盟 (1991—), 男, 博士研究生, 主要研究方向为雷达信号处理|王国玉 (1962—), 男, 研究员, 博士研究生导师, 博士, 主要研究方向为电子信息系统仿真评估|冯德军 (1972—), 男, 研究员, 博士研究生导师, 博士, 主要研究方向为雷达信号处理、雷达系统仿真
  • 基金资助:
    国家自然科学基金(62071475)

AFSS reflector double pulse cycle intermittent modulation method

Yameng KONG*, Guoyu WANG, Dejun FENG   

  1. School of Electronic Science, National University of Defense Technology, Changsha 410073, China
  • Received:2021-07-26 Online:2022-11-14 Published:2022-11-24
  • Contact: Yameng KONG

摘要:

针对无源电磁调控中目标模拟样式单一且灵活性欠缺的问题,利用有源频率选择表面(active frequency selective surface, AFSS)电磁散射特性可调且不主动辐射电磁波的特性, 提出了一种AFSS反射器电磁散射状态切换的双脉冲周期间歇调制方法。构建了AFSS反射器的双脉冲周期间歇调制信号模型, 分析了调制信号的特点。通过理论推导, 研究了AFSS反射器对雷达线性调频信号回波匹配滤波结果的影响。最后进行了仿真验证, 结果证明了所提方法的有效性和可行性。该方法增加了控制参数维度, 调制样式更为丰富, 应用于雷达目标模拟时可以提高其可变性和灵活性。

关键词: 有源频率选择表面, 反射器, 间歇调制, 雷达

Abstract:

To address the problem of single and inflexible target simulation in passive eletromagnetic modulation, using the advantages of adjustable electromagnetic scattering characteristics of the active frequency selective surface (AFSS) and not actively radiating electromagnetic waves, a double-pulse periodic intermittent modulation method for switching the electromagnetic scattering state of the AFSS reflector is proposed. The double-pulse intermittent modulation signal model of AFSS reflector is constructed, and the characteristics of the modulated signal are analyzed. Through theoretical derivation, the effect of AFSS reflector on the echo matching filtering results of radar linear frequercy modulation signal is investigated. Finally, simulations are performed to verify the results, which prove the effectiveness and feasibility of the proposed method. The method increases the dimensionality of control parameters and the modulation style is more abundant, which can be applied to radar target simulation to improve its variability and flexibility.

Key words: active frequency selective surface (AFSS), reflector, interval modulation, radar

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