基于延迟相乘的相关跳频信号鲁棒检测  

Robust Detection of Correlated Frequency Hopping Spread Spectrum Signals Based on Delay Multiplication

作　　者：董占奇[1] 胡捍英[1] 

机构地区：[1]信息工程大学信息工程学院,河南郑州450002

出　　处：《无线电工程》2007年第5期24-26,58,共4页Radio Engineering

摘　　要：从相关跳频扩谱系统在每一跳中发送频率恒定的正弦波这一典型特征出发,对相关跳频扩谱信号在经过延迟相乘低通处理后所具有的基于跳驻留时间的恒值特性进行了研究。提出了一种可实现对相关跳频扩谱信号侦察检测的有效方法——基于延迟相乘低通滤波的相关分析法。计算机仿真显示该方法不但能在低信噪比环境下凸现相关跳频扩谱信号的特征,而且同时能够实现对跳驻留时间的估计。Based on the typical characteristic that the signal transmitted in each hop by a correlated frequency hopping spread spectrum communication system is a frequency-fixed sine wave, the paper looks into the hop-duration based invariability of the correlated frequency hopping spread spectrum signals after delay multiplication low-pass processing. And based on these, the paper proposes an effective method for the detection of correlated frequency hopping spread spectrum signals：the correlation analysis method based on delay multiplication low-pass filtering. Computer simulations show that the method cart not only reveal the characteristic of the correlated frequency hopping spread spectrum signals under the conditions of low signal to noise ratio, but also realize the estimation of the hop duration.

关 键 词：相关跳频 延迟相乘 相关分析 跳驻留时间 

分 类 号：TN911.7[电子电信—通信与信息系统]