摘要
CLEAN算法在处理对象是点源时,即使系统噪声很大,恢复点源图像的效果仍然比较理想,且思想简单、易于实现,因此在综合孔径微波辐射计点源图像的恢复中得到了广泛的应用和发展。但当处理对象是展源时,该算法恢复的辐射计图像存在着条纹现象。借鉴最大熵图像复原算法的约束思想,提出了一种改进的CLEAN算法。仿真结果表明,图像质量得到了进一步改善。
When reconstructing point-source imaging of aperture synthesis radiometers,CLEAN algorithm promises the better results. And it is also easy to understand and program. But it has the strip when it is applied to extended sources processing. Inspired by the ability of Maximum Entropy Method to proceed the extended sources, an improved CLEAN algorithm was proposed. Finally the results of the simulation show that the improved image quality is improved.
出处
《计算机科学》
CSCD
北大核心
2008年第10期212-214,共3页
Computer Science
基金
航天技术创新基金项目(20060111)
航天支撑技术基金项目(xxx毫米波xx研究)
华中科技大学校科学研究基金资助(2006M023B)
国家自然科学基金面上项目(60772090)
关键词
综合孔径辐射计
CLEAN算法
展源
Synthetic aperture radiometer,Clean algorithm, Extend sources