CAJ | 학술논문

针对频率步进体制高分辨全极化雷达，本文研究了基于稀疏信号表示的高分辨全极化雷达成像，并提出了一种基于极化平滑 l0范数算法的成像方法。算法中的联合稀疏性度量综合利用了目标在全极化下的散射特性，因而成像结果兼具全极化处理和稀疏优化算法的优点，不仅能以较少的观测回波获得高分辨距离像，还能全面准确反映目标全极化散射特性，有利于目标识别等进一步应用。仿真和暗室实测数据实验结果验证了本文方法的有效性。
침대빈솔보진체제고분변전겁화뢰체，본문연구료기우희소신호표시적고분변전겁화뢰체성상，병제출료일충기우겁화평활 l0범수산법적성상방법。산법중적연합희소성도량종합이용료목표재전겁화하적산사특성，인이성상결과겸구전겁화처리화희소우화산법적우점，불부능이교소적관측회파획득고분변거리상，환능전면준학반영목표전겁화산사특성，유리우목표식별등진일보응용。방진화암실실측수거실험결과험증료본문방법적유효성。
For the stepped frequency high resolution full polarization radar ,high resolution full polarization imaging method using spare signal representation is studied ,and a novel imaging method based on polarization smoothed l0-norm algorithm is pro-posed in this paper .A new joint-sparsity is defined by exploiting the scattering characteristics of target in fully polarimetric channels synthetically in the presented algorithm ,thus the imaging results combine the merits of fully polarimetric processing technique and sparse optimization algorithm ,and can not only provide high resolution range profiles using limited measurements ,but also indicate the true polarimetric scattering characteristics of the target ,which are beneficial for further applications such as target recognition .Fi-nally ,the validity of the proposed approach is demonstrated using both simulated data and real data measured in an anechoic cham-ber .