基于时频分布的多分量LFM信号检测  

Multi-component LFM Signal Detection based on Quadric Time-Frequency Distribution

作　　者：高凤鹍[1] 贾海涛[1] 

机构地区：[1]电子科技大学电子科学技术研究院,四川成都611731

出　　处：《通信技术》2010年第12期1-3,共3页Communications Technology

摘　　要：采用二次型时频分析方法对多分量线性调频信号进行分析,获取信号的时频域能量分布。首先讨论了线性调频信号的两种二次型时频分布:魏格纳-威尔分布及其改进形式——重排魏格纳-威尔分布;在此基础上,进一步对比验证了霍夫变换和若当变换对线性调频信号时频域能量的积累效果,以实现噪声背景中的多分量线性调频信号检测。仿真结果显示基于二次型时频分布的处理是实现多分量线性调频信号检测的一个有效方法。The multi-component linear frequency-modulated signal is analyzed with time-frequency analysis method,thus to acquire the quadric time-frequency distribution.First,the two different quadric time-frequency distribution types of signal are discussed,then the energy accumulation of signal by Wigner-Hough transformation and Radon-Wigner transformation with the aim to detect multi-component LFM signal under noisy environment.Simulation results indicate that it is an efficient method for detecting multi-component LFM signal based on quadric time-frequency distribution.

关 键 词：时频分布 线性调频信号 魏格纳-霍夫变换 信号检测 

分 类 号：TN911.7[电子电信—通信与信息系统]