摘要
针对SAR极化对比增强问题,本文在传统的Lagrange乘子法的基础上,提出了一种基于极化相干矩阵(T矩阵)的新方法,并通过SAR数据实验,验证了其有效性和优越性。本文方法基于Pauli极化基,使极化匹配矢量元素对应于Pauli基元素所代表的地物散射机理,其元素模值大小反应了散射特性的强弱。实验结果表明,此方法可获得更优的极化匹配矢量、极化对比度及其极化对比增强图像效果。
As for the problem of SAR optimization of polarimetrie contrast enhancement, an analytical method based on the polarimetric scattering coherence matrix is proposed according to the traditional method using Lagrange multipliers and is verified effectively through SAR data experiments. The new method we present employs the Pauli basis and makes the required polarimetric matched vector＇s elements own the same physical mechanisms and the similar scattering characteristic power intensities as the Pauli basis. All of the experiments demonstrate that the proposed method obtains the better polarimetric matched vectors, polarimetric contrasts and contrast-enhanced images.
出处
《电子测量技术》
2009年第5期62-65,共4页
Electronic Measurement Technology
关键词
极化对比增强
极化匹配矢量
极化对比度
极化散射相干矩阵
optimization of polarimetric contrast enhancement
polarimetric matched vector
polarimetric contrast
polarimetric scattering coherence matrix
