摘要
在宽带高频卫星通信信号的非合作接收处理中,可以利用调制宽带转换技术对接收到的卫星通信信号进行欠采样处理,但由于复杂背景信号的存在,进行欠采样时,会增加信号处理的运算量和稀疏阶数,影响稀疏重构的效果和效率。针对这种问题,提出了一种基于频域滤波的改进型调制宽带转换技术,并进行了欠采样处理仿真实验,结果表明,在复杂背景信号存在时,本文方法优化了对宽带高频卫星通信信号的稀疏重构效果,提高了信号处理效率。
In non-cooperative receiving processing of wideband high-frequency satellite communication signals,it is feasible that using broadband modulation conversion technology to perform subNyquist sampling processing to received satellite communication signals.Due to the complexity of background signals,the computation of signals processing and sparse order will be increased,which will affect the effectiveness and efficiency of the sparse-reconstruction.In order to solve this problem,this paper presents an improved modulation wideband conversion technology based on frequency domain filtering,and performs a simulation experiment of sub-Nyquist sampling processing.The result shows that in the presence of complex background signal,the method proposed in this paer optimizes the effectiveness of the sparse-reconstruction to widwband high frequency satellite communication signals.,and improves the efficiency of signals processing.
作者
文韬
陈旗
WEN Tao;CHEN Qi(Naval University of Engineering,Wuhan 430033,Chin)
出处
《舰船电子对抗》
2018年第2期66-70,共5页
Shipboard Electronic Countermeasure
基金
国家自然科学基金青年项目
项目编号:61501484
海军工程大学科研发展基金项目
项目编号:科技[2016]66号
关键词
卫星通信
频域滤波
调制宽带转换
欠采样处理
satellite communication
frequency domain filtering
modulation wideband conversion
sub-Nyquist sampling processing
