关键词: 穿墙雷达, 块稀疏重建, 拟牛顿法, 成像算法

Abstract: Through-the-Wall Radar（TWR） imaging enables precise position targets localization and high-resolution imaging. However, interior wall position uncertainties bring obvious mess to it under multipath effect. To solve the above problem, on the basis of reasonable models the target multipath echo of through-the-wall radar, the quasi-Newton method and group-sparse based imaging reconstruction algorithm is proposed for TWR imaging. The proposed imaging algorithm can achieve precise target localization and ghost-free based on the interior wall localization reestablished precisely. The feasibility and validity of the proposed imaging method is verified by the numerical simulation results.

Key words: Through-the-Wall Radar（TWR）, group-sparse reconstruction, quasi-Newton method, imaging algorithm