| 一种改进的SAR图像相干斑抑制方法 |
| |
| 引用本文： | 王晓,夏传浩.一种改进的SAR图像相干斑抑制方法[J].合肥工业大学学报(自然科学版),2005,28(5):473-476. |
| |
| 作者姓名： | 王晓 夏传浩 |
| |
| 作者单位： | 1. 合肥工业大学,计算机与信息学院,安徽,合肥,230009
2. 中国电子科技集团公司第38研究所,安徽,合肥,230031 |
| |
| 摘 要： | 传统的抑制合成孔径雷达(SAR)图像斑点噪声的TDRGMAP方法,对大面积呈强反射的典型战略目标检测效果较差、边缘定位精度较低。文章针对TDRGMAP方法提出了一种改进算法,将恒虚警检测(CFAR)和双参数恒虚警检测(B-CFAR)结合起来检测及保持点目标,并引入了自适应窗口的方法进行边缘和线条检测。用真实机载SAR图像进行实验,证明所提出的新方法取得了较好的改进效果。
|
| 关 键 词： | 斑点噪声 点目标检测 恒虚警 边缘检测 自适应 |
| 文章编号： | 1003-5060(2005)05-0473-04 |
| 修稿时间： | 2004年7月12日 |
An improved speckle reduction algorithm of SAR images |
| |
| WANG Xiao,XIA Chuan-hao.An improved speckle reduction algorithm of SAR images[J].Journal of Hefei University of Technology(Natural Science),2005,28(5):473-476. |
| |
| Authors: | WANG Xiao XIA Chuan-hao |
| |
| Institution: | WANG Xiao~1,XIA Chuan-hao~2 |
| |
| Abstract: | The traditional TDRGMAP algorithm for speckle reduction of synthetic aperture radar(SAR) images has a bad detectability and lower localization precision for typical tactic targets with wide area and stronger reflectivity. In this paper, an improved algorithm, which has combined the constant false alarm rate(CFAR) with the biparameter constant false alarm rate(B-CFAR), is proposed. Moreover,the adaptive window is integrated into the new algorithm to detect edges and lines. The processing results of real airborne SAR images show that the proposed method attains better effect. |
| |
| Keywords: | speckle point target detection constant false alarm rate edge detection adaptive filtering |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
