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基于目标场景结构化稀疏重构的三维雷达成像方法

Zhang Yan,Wang Baoping,Fang Yang,Wang Jiahui,Song Zuxun

JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY（2021）

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Abstract
基于成像场景散射强度稀疏表示的3维雷达成像结果对目标的外形几何细节体现较差,不利于目标识别.该文首先分析了目标在成像场景内散射强度的结构化特征,然后以散射点梯度信息进行了结构化稀疏表示,构建了基于目标散射强度梯度变化的结构化稀疏重构模型,最后通过改进的联合正交匹配追踪算法重构出目标3维图像.实验结果表明,该方法具有较好的抗噪性能和成像质量,可以更好地反映目标外形几何特征.
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Key words
Radar imaging, 3D imaging, Target scattering intensity, Structured sparse representation, Orthogonal Matching Pursuit (OMP)
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