现代信息科技2026，Vol.10Issue(16)：1-8,13,9.DOI:10.19850/j.cnki.2096-4706.2026.16.001
面向低空探测的5G外源雷达同频基站信号鲁棒分离技术
Robust Separation Technology of 5G Passive Radar Co-channel Base Station Signals for Low-altitude Detection
摘要
Abstract
To address the severe degradation of detection performance for low-altitude small targets caused by signal aliasing of multiple base stations in dense urban co-channel 5G networks,a robust separation technology based on sequential joint multi-reconstruction and extended cancellation is proposed.The method first detects the strongest Synchronization Signal Block(SSB),demodulates to obtain prior information comprising the Physical Cell ID and Master Information Block,and reconstructs a high-precision time-domain waveform of the SSB.Then,the Extended Cancellation Algorithm is applied to adaptively eliminate the signal and its multipath interference,and the aliased components are stripped one by one through iterative processing.Simulations under a typical urban low-altitude detection scenario verify that the proposed algorithm can completely separate all four co-channel signals and robustly achieve multi-base-station signal separation at Signal-to-Noise Ratios(SNRs)of 12 dB,6 dB,and 4 dB.The proposed method effectively solves the problem of target echoes being masked by co-channel clutter and effectively improves the low-altitude detection capability of 5G passive radar.关键词
5G外辐射源雷达/同频基站干扰/序贯重构/扩展相消算法Key words
5G passive radar/co-channel base station interference/sequential reconstruction/Extensive Cancellation Algorithm(ECA)分类
信息技术与安全科学引用本文复制引用
孙清洋,刘乐,郭国强..面向低空探测的5G外源雷达同频基站信号鲁棒分离技术[J].现代信息科技,2026,10(16):1-8,13,9.基金项目
国家科技重大专项项目(2024ZD1300100) （2024ZD1300100）
