首页|高频雷达中射频干扰的RD图表现机理与建模仿真

高频雷达中射频干扰的RD图表现机理与建模仿真

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  • 国家科技期刊平台
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射频干扰对于高频超视距雷达是一大威胁.本文研究射频干扰的距离-多普勒图表现机理和建模方法,分析了射频干扰频域特性与距离-多普勒图表现的关系,讨论了雷达信号处理中的射频干扰信号频谱变化.根据高斯白噪声通过线性滤波器的特性,设计滤波器响应函数来产生不同频谱和距离-多普勒图形态的射频干扰.基于以上研究,本文将射频干扰分为单频、窄带和宽带 3 类,归纳出射频干扰的距离-多普勒图表现机理,并提出了基于卷积的射频干扰新型建模方法.实测数据和仿真表明:本文对射频干扰距离-多普勒图表现机理分析合理,建模方法能很好地模拟多数实测干扰距离-多普勒图形态.
Analysis of the range-Doppler map appearance,modeling,and simulation of radio frequency interference in high-frequency radar
Radio frequency interference(RFI)greatly threatens high-frequency over-the-horizon radar.This paper analyzes the range-Doppler(RD)map appearance,modeling,and simulation of the RFI.First,the relationship between the appearance of the RFI in the RD map and the RFI spectral features is analyzed.Second,the change in RFI spectra during the radar signal processing is discussed.Third,given the property of the white Gaussian noise passing through linear filters,the response functions of the filter are designed to produce various RFI spectra and RFI of the RD map appearance.Based on these studies,this paper proposes that RFI can be classified into three categories:single-frequency RFI,narrowband RFI,and wideband RFI.The reason for the RD appearance of the RFI is explained,and an RFI modeling method based on the convolution is proposed.Real data and simulation ex-periments demonstrate that our explanation of the RD appearance of the RFI is reasonable,and our proposed model can simulate many types of real RFI RD appearances.

high-frequency radarradio frequency interferencerange-Dopplerspectral analysismodeling and simulationlinear filteringover-the-horizon radarradar signal processing

罗忠涛、王涛、郑园园、张天骐

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重庆邮电大学 通信与信息工程学院,重庆 400065

南京电子技术研究所,江苏 南京 210013

高频雷达 射频干扰 距离-多普勒 频谱分析 建模仿真 线性滤波 超视距雷达 雷达信号处理

国家自然科学基金重庆市教委科学技术研究计划

61701067KJQN202300633

2024

10.11990/jheu.202203028

哈尔滨工程大学学报
哈尔滨工程大学

哈尔滨工程大学学报

CSTPCD北大核心
影响因子：0.655
ISSN：1006-7043
年,卷(期)：2024.45(6)