物理学报2011，Vol.60Issue(5)：550-556,7.
调制无线电信号的分形特征研究
Study on fractal features of modulated radio signal
摘要
Abstract
The shape of radio signals determined by modulation system and that produced by the nonlinear transform are different in kind, which is the basis for discriminating them. Feature extraction based on fractal theory is a new method. In this paper,the features of modulation and nonlinear transform are projected to fractal feature space by computing the variance fractal dimension and the Mandelbrot singularity spectra dimensions. The numerical result show that differences in fractal features do exist between different modulated signals and the nonlinear transformed signals. The results show that the feature of these signals can be extracted based on fractal theory, which has engineering value for the identification of modulated radio signals.关键词
无线电/信号/分形特征/识别Key words
radio/ signal/ fractal feature/ discrimination引用本文复制引用
唐智灵,杨小牛,李建东..调制无线电信号的分形特征研究[J].物理学报,2011,60(5):550-556,7.基金项目
国家杰出青年科学基金(批准号:60725105),国家重点基础研究发展计划(973计划)(批准号:2009CB320404),国家高技术研究发展计划(863计划)(批准号:2007AA01Z217),国家自然科学基金(批准号:60572146),通信系统信息控制技术国家级重点实验室资助的课题. （批准号:60725105）
