摘要
针对高分辨极化测量雷达体制,研究了雷达目标的高分辨极化特性的建模与提取问题。建立了能够精确描述雷达目标高频极化散射的高分辨相干极化GTD(CP-GTD)模型,并提出了基于CP-GTD模型的全极化散射中心参数估计方法。与常规GTD方法相比,CP-GTD方法的突出优点在于它不需要进行散射中心关联,并且能准确估计散射中心的相干散射矩阵。此外,全极化信息的利用,使其具有精度更高、速度更快等优点。基于仿真和实测数据的实验结果验证了CP-GTD模型的优越性。
High-resolution polarization scattering characteristics modeling and scattering center extraction are studied for high resolution polarimetric radar systems. A new model called as Coherent Polarization GTD model (CP-GTD) is established and a novel method for full polarization scattering center extraction is proposed. Unlike the traditional GTD method, the CP-GTD method can overleap the step of scattering centers association and can estimate coherent scattering matrices of scattering centers accurately. It also provides a better performance and a reduced computation burden because the full-polarization information is used. The superiority of the CP-GTD is verified by experiment results based on simulated and real data.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第1期55-61,共7页
Chinese Journal of Radio Science
基金
全国优秀博士论文专项资助(08100101)
新世纪优秀人才计划项目资助(NCET-04-0997)
国家自然科学基金(60672033)