空军工程大学学报2024，Vol.25Issue(4)：41-48,78,9.DOI:10.3969/j.issn.2097-1915.2024.04.007
基于ADMM的SAR多运动目标成像方法
ASAR Multiple Moving Targets Imaging Based on ADMM
摘要
Abstract
In order to achieve simultaneously excellent multiple moving target imaging quality and imaging efficiency,a SAR multiple moving target imaging method based on alternating direction method of multi-pliers(ADMM)is proposed by utilizing the multi-component linear frequency modulation signal form and sparse prior knowledge of synthetic aperture radar(SAR)multiple moving target signals,First,a sparse observation model of SAR multiple moving targets is established to formulate the multiple moving target imaging task into an inverse problem with the sparse feature constraint.Then the adaptive Chirplet decom-position method is applied to realize the estimation of target Doppler modulation frequencies for the obser-vation matrix construction.The well-focused SAR image of multiple moving targets can be sparsely recon-structed based on ADMM decomposing the complex convex optimization problem into several simple sub-problems which can be alternately solved.Finally,the simulations and the experiments on airborne SAR data show that the proposed method is superior to the existing moving target imaging methods in terms of imaging quality and imaging efficiency.关键词
合成孔径雷达/多运动目标成像/交替方向乘子法/稀疏重构Key words
synthetic aperture radar/multiple moving target imaging/alternating direction method of mul-tipliers/sparse reconstruction分类
信息技术与安全科学引用本文复制引用
穆慧琳,王泽武,丁畅,王甲富,孙杉,易统,李耀敏..基于ADMM的SAR多运动目标成像方法[J].空军工程大学学报,2024,25(4):41-48,78,9.基金项目
国家自然科学基金(62201612) （62201612）
中国博士后科学基金(2023M734272) （2023M734272）
