信号处理2026，Vol.42Issue(4)：479-490,12.DOI:10.12466/xhcl.2026.04.003
基于ADMM-MFOCUSS的捷变频雷达扩展目标稀疏重构算法
Sparse Reconstruction Algorithm for Extended Targets in Frequency-Agile Radar Based on ADMM-MFOCUSS
摘要
Abstract
Frequency-agile radar can achieve high resolution reconstruction of multiple scattering points from a given tar-get.However,for extended targets,the scattering points are distributed across multiple range bins,and the range-phase factors of these points in adjacent bins may interfere with each other.This interference often leads to redundant recon-structions.To address this limitation,a sparse signal processing model was developed for extended targets.The causes and characteristics of the positional distribution of redundant reconstructions were analyzed,and a sparse reconstruction algorithm is proposed that integrates the alternating direction method of multipliers(ADMM)and multi focal underde-termined system solver(MFOCUSS)algorithms.Therefore,the proposed method is referred to as the ADMM-MFOCUSS algorithm.ADMM-MFOCUSS first performs sparse reconstruction via ADMM,followed by suppression of repeated responses via analysis of the energy of the solutions as well as the consistency of the indicated positions.Reli-able support sets are adaptively selected,and the amplitudes of sparse solutions are further refined within the support sets using MFOCUSS to enable accurate scene reconstruction for extended targets.Simulation results demonstrate that the proposed method achieves accurate parameter estimation for extended targets in frequency-agile radar scenarios in-volving multiple range gates.Compared with existing approaches such as regularized adaptive matching pursuit(RAMP),ADMM,and MFOCUSS,the proposed algorithm yields higher reconstruction accuracy and lower false alarm rates.关键词
捷变频/目标参数估计/扩展目标/交替方向乘子/多点欠定系统聚焦Key words
frequency-agile/target parameter estimation/extended target/alternating direction method of multipliers/multi focal underdetermined system solver分类
信息技术与安全科学引用本文复制引用
张欣媛,张劲东,李明杰,唐家晖..基于ADMM-MFOCUSS的捷变频雷达扩展目标稀疏重构算法[J].信号处理,2026,42(4):479-490,12.基金项目
国家自然科学基金(62171220)The National Natural Science Foundation of China(62171220) （62171220）
