摘要
针对极化干涉SAR体散射体参数估计应用,基于随机体散射体/地表二层(RVoG)模型分析研究了其最优基线问题.在基线去相干、RVoG模型、相位管等相关理论分析基础之上,证明了最优基线的存在性,给出了其定义与计算方法,比较了其与常规干涉SAR最优基线的异同.通过仿真验证并讨论了雷达、成像几何和体散射体参数对最优基线选取的影响.
The optimal baseline of polarimetric interferometric synthetic aperture radar（ POLinSAR） is analyzed based on the random volume over ground（ RVoG）model in the application of estimating parameters of the volume scatterers. Based on the basic concepts of baseline decorrelation, RVoG model and phase tube, the existence of POLinSAR optimal baseline is proved. Then the definition of POLinSAR optimal baseline is given and the method for calculating its value is derived. The differences between InSAR optimal baseline and POLinSAR optimal baseline are also presented. Finally, by the experimental simulation, the optimal baseline is validated and the effects of various parameters on the choice of optimal baseline are discussed, which include radar system parameters, imaging geometry parameters and volume scatterer parameters.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2008年第12期2367-2372,共6页
Acta Electronica Sinica
基金
重点基金N0.9140A21020106ZK1301
实验室基金No.9140C1903020801提供支持.
关键词
合成孔径雷达
极化干涉
最优基线
RVoG
相位管
synthetic aperture radar
polarimetric interferometry
optimal baseline
RVoG
phase tube
