单站高频雷达飞机目标探测的相关研究
作者:
作者单位:

武汉大学 电子信息学院,湖北 武汉 430000

作者简介:

刘 赣(1995-),男,在读博士研究生,主要研究方向为雷达目标检测与跟踪、微波无源器件设计、雷达信号处理.email:liugan@whu.edu.cn.
田应伟(1989-),男,博士,副教授,主要研究方向为高频雷达系统及雷达信号处理.
文必洋(1963-),男,博士,教授,主要研究方向为高频/超高频雷达系统及信号处理.
马盛波(1999-),男,在读硕士研究生,主要研究方向为双基地目标跟踪.

通讯作者:

田应伟 email:tianyw@whu.edu.cn

基金项目:

国家自然科学基金资助项目(62071337);国家重点研发计划资助项目(2022YFC2806300);湖北省自然科学基金资助项目(2022CFB055)

伦理声明:



Research on aircraft target detection by single station HF radar
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Affiliation:

School of Electronic Information,Wuhan University,Wuhan Hubei 430000,China

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    摘要:

    为拓展紧凑型高频地波雷达(HFGWR)的应用领域,针对单站紧凑型HFGWR探测飞机目标的场景进行研究。通过探讨高速目标对距离谱和多普勒谱的影响及获取高速目标的速度和距离信息所面临的挑战,推导出线性调频中断连续波(FMICW)波形参数设计的约束条件,并针对长、短相干积累时间,分别设计了相应的波形参数进行数值仿真。研究表明,在长积累时间条件下,采用广义Radon傅里叶变换(GRFT)方法消除距离和多普勒频率的徙动,实现了目标能量的有效积累和运动参数的精确估计;在短积累时间条件下,通过时频分析结合贪婪算法,先估算目标的运动参数,再对距离慢时间信号进行补偿,显著提升了目标信噪比。通过理论推导和数值仿真,验证了单站紧凑型HFGWR探测高速目标的可行性,并为后续的实地测试奠定了理论基础。

    Abstract:

    In order to expand the application field of compact High Frequency Ground Wave Radar (HFGWR), research has been conducted on the scenario of single-station compact HFGWR detecting aircraft targets. By exploring the impact of high-speed targets on the range spectrum and Doppler spectrum, as well as the challenges faced in obtaining the speed and range information of high-speed targets, the constraints of the linear Frequency Modulated Interrupted Continuous Wave(FMICW) waveform parameter design have been derived. Corresponding waveform parameters have been designed for long and short coherent accumulation time, and numerical simulations have been carried out. The research shows that under the condition of long accumulation time, the Generalized Radon Fourier Transform(GRFT) method is employed to eliminate the migration of range and Doppler frequency,achieving effective accumulation of target energy and accurate estimation of motion parameters; under the condition of short accumulation time, the signal-to-noise ratio of the target is significantly improved by combining time-frequency analysis with the greedy algorithm to first estimate the motion parameters of the target, and then compensate for the slow time signal of the range.The feasibility of single-station compact HFGWR detecting high-speed targets has been verified through theoretical derivation and numerical simulation, and a theoretical foundation has been laid for subsequent field tests.

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引用本文

刘赣,田应伟,文必洋,马盛波.单站高频雷达飞机目标探测的相关研究[J].太赫兹科学与电子信息学报,2025,23(5):502~508

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  • 收稿日期:2023-07-30
  • 最后修改日期:2023-11-28
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  • 在线发布日期: 2025-05-29
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