太赫兹科学与电子信息学报2024，Vol.22Issue(3)：337-344,8.DOI:10.11805/TKYDA2022046
基于子载波提取的OFDM无源雷达频率分集方法
Frequency diverse method for OFDM passive radar based on subcarrier extraction
摘要
Abstract
The beamforming method of current Orthogonal Frequency Division Multiplexing(OFDM)passive radar cannot effectively distinguish the target signals distributed at the same angle and different distances.A new frequency diverse processing method based on subcarrier extraction of passive radar receiving signal is proposed.The beampattern can be turned into range-angle dependent by extracting and processing different subcarriers independently for each receiving channel,thus the targets distributed at the same angle and different distances can be processed differently.And the effect of parameters in frequency diverse processing is also investigated.The increased degree of freedom in range dimension with frequency diverse processing can help focus the beam energy on the desired point in space,which improves the performance of radar in target detection,location,and clutter suppression.Simulation analysis shows that a dot-shaped beampattern can be obtained with frequency diverse processing for OFDM passive radar receiving signals,and the experimental results also verify the effectiveness and the practicability of the proposed method.关键词
无源雷达/频率分集/OFDM信号/点状波束Key words
passive radar/frequency diverse/OFDM signal/dot-shaped beampattern分类
信息技术与安全科学引用本文复制引用
饶云华,贺浩,万显荣,易建新..基于子载波提取的OFDM无源雷达频率分集方法[J].太赫兹科学与电子信息学报,2024,22(3):337-344,8.基金项目
国家自然科学基金资助项目(61271400 （）
62071335 （）
61931015) （）
苏州市重点产业技术创新项目(SYG202007) （SYG202007）
湖北省技术创新专项重大资助项目(2019AAA061) （2019AAA061）
深圳市科技计划资助项目(JCYJ20170818112037398) （JCYJ20170818112037398）
湖北省自然科学基金创新群体项目(2021CFA002) （2021CFA002）
