基于Cohen类离散时频分布对侦察信号处理的改进算法  

A modified reconnaissance signal processing algorithm based on discrete Cohen classes distribution

作　　者：张鑫[1] 刘锋[1] 韩建立[1] 

机构地区：[1]海军航空工程学院研究生管理大队 海军航空工程学院电子信息工程系,山东烟台,264001 海军航空工程学院电子信息工程系,山东烟台,264001

出　　处：《海军航空工程学院学报》2007年第1期155-160,共6页Journal of Naval Aeronautical and Astronautical University

摘　　要：通过时频分布特别是Cohen类时频分布的平移不变性,将连续Cohen类时频分布扩展到离散Cohen类时频分布.在分析研究其与连续Cohen类的关系后,利用核函数的分解与重构理论提出了一种用离散时频分析方法处理侦察信号的改进算法,通过计算机进行了仿真.In this paper, the continuous Cohen classes distribution is extended to one type of discrete Cohen classes distribution, since all the quadratic time-frequency distribution are covariant to time shifts and frequency shifts. A modified algorithm is provided for dealing with the reconnaissance signals base on the discrete Cohen classes by referring the relationships between the continuous Wigner distribution and the discrete Cohen classes. The computer is used to illustrate the algorithm and some properties.

关 键 词：离散时频分布 Cohen类 核函数 侦察接收机 特征提取 

分 类 号：TN911.7[电子电信—通信与信息系统]