高质量通信信号时频图处理及应用  

Processing and Application of High Quality Communication Signals Time-frequency Graph

作　　者：马飞[1] 徐海锋[2] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]石家庄铁道大学,河北石家庄050043

出　　处：《计算机与网络》2011年第8期50-52,共3页Computer & Network

摘　　要：针对信号监测工作中信号时频图清晰显示重要性的问题,首先介绍了信号时频特征获取,之后进行信号时频图显示处理,利用基于灰度变换图像对比度增强、图像渐变平滑处理、图像的锐化处理的数字图像处理相关算法对信号时频图进行显示处理,并成功的在实践工程中进行了运用,解决了信号时频特征在时频域直观显示的问题,从而能够在时频域上表示出信号中各个分量的时间关联谱特性,在每一时刻指示出信号在瞬时频率附近的能量聚集情况。Communication signals time-frequency graph is processed by using image contrast enhancement, image smoothing processing and sharpening processing algorithm. Experiments show that signal time-frequency graph processed by digital image processing algorithm possesses excellent display result and makes signal characteristic more legible. High quality and high definirion signal time-frequency graph can show signal time-frequency characteristic intuitively, and so it can display time-dependent spectrum characteristics of signal components in time-frequency area. It establishes a basis for signal monitor and electromagnetic spectrum management system.

关 键 词：时频特征对比度增强平滑处理锐化处理 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]