| 基于SISE方程的广义gamma分布参数估计方法 |
| |
| 引用本文： | 秦先祥*,高贵周,石琳,邹焕新.基于SISE方程的广义gamma分布参数估计方法[J].电子与信息学报,2012,34(8):1860-1865. |
| |
| 作者姓名： | 秦先祥* 高贵周 石琳 邹焕新 |
| |
| 作者单位： | 国防科学技术大学电子科学与工程学院长沙410073 |
| |
| 摘 要： | 广义gamma分布是近年来用于SAR图像统计建模重要分布之一，参数估计是制约其应用的核心问题。该文提出了一种新的参数估计方法。首先分析了的对数累积量参数估计方法(Mehtod-of- Log-Culmulants, MoLC)的不足，接着推导了基于SISE (Scale-Independent-Shape-Estimation)方程的参数估计表达式，并给出了具体的求解方法。最后，利用蒙特卡洛仿真的实验结果表明，该文方法稳定性和有效性优于MoLC。
|
| 关 键 词： | 广义gamma分布 参数估计 尺度独立的形状估计 对数累积量方法 蒙特卡洛仿真 |
| 收稿时间： | 2011-12-02 |
Method on Parameters Estimation of Generalized Gamma Distribution Based on Scale-Independent-Shape-Estimation(SISE) Equation |
| |
| Qin Xian-xiang Gao Gui Zhou Shi-lin Zou Huan-xin.Method on Parameters Estimation of Generalized Gamma Distribution Based on Scale-Independent-Shape-Estimation(SISE) Equation[J].Journal of Electronics & Information Technology,2012,34(8):1860-1865. |
| |
| Authors: | Qin Xian-xiang Gao Gui Zhou Shi-lin Zou Huan-xin |
| |
| Affiliation: | Qin Xian-xiang Gao Gui Zhou Shi-lin Zou Huan-xin(School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
| |
| Abstract: | The Generalized Gamma Distribution is one of the most important distributions for modeling of Synthetic Aperture Radar(SAR) images,of which the main limiting factor for application is the parameters estimation.In this paper,a new parameters estimation for is proposed.At first,the weakness of Method-of-Log-Cumulants(MoLC) for is analyzed.Moreover,the estimation expression for based on Scale-Independent-Shape-Estimation(SISE) equation is derived,and the concrete solving method is presented too.Finally,the Monte Carlo simulation results demonstrate that the proposed method is more stable and effective than MoLC. |
| |
| Keywords: | Generalized Gamma Distribution Parameters estimation Scale-Independent-Shape-Estimation(SISE) Mehtod-of-Log-Culmulants(MoLC) Monte Carlo simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
|
点击此处可从《电子与信息学报》下载全文 |
