欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为了从观察图像中估计出合成孔径雷达（SAR）图像的雷达横截面积（RCS）模型的对数-正态分布的参数，提出了强度图像和幅值图像的参数估计方法。推导出斑点的前两阶对数累积量和对数-正态分布的前两阶对数累积量；基于第二类统计量和斑点的乘性模型，获得RCS模型的对数-正态分布的参数估计式。所提方法具有解析的表达式，易于实现。MonteCarlo仿真和SAR图像的参数估计实验表明，所提方法可以有效地从观察图像中估计出RCS模型的对数-正态分布的参数。
英文摘要：
In order to estimate the parameters of the log-normal distribution of radar cross section （RCS） model of synthetic aperture radar（SAR） images from the observed image, this paper proposed the parameter estimator for intensity image and am- plitude image. First, it derived the first two log-cumulants of speckle, Second,it derived the first two log-cumulants of log-nor- mal distribution. Last,it obtained the parameter estimator of the log-normal distribution of RCS model based on the second- kind statistics and the muhiplicativc model of speckle. The proposed estimator was easy to implement due to the analytical ex- pressions. Parameter estimation experiments on Monte Carlo simulations and SAR images demonstrate that the proposed estima- tor can effectiveh, estimate the parameters of the log-normal distribution of RCS model from the observed image.
同期刊论文项目
同项目期刊论文
Partial discharge fault identification of switchgear based on frequency constrained independent comp
期刊信息
位置：