摘要
在确定频点参数的情况下,采用信道化接收机能够准确高效地实现对跳频信号的接收,其中树形结构接收机既保证信道间具有一定独立性,同时结构灵活。将该结构应用于战术目标瞄准网络技术(TTNT)数据链信号的接收,设计了TTNT信号非均匀分布的16个跳频频点的树形多级结构数字化接收机。分析了该结构的运算量大小,并通过仿真实验验证了该结构的可行性。仿真结果表明,树形多级级联结构相对于多相离散傅里叶变换(DFT)滤波器组结构运算量有所增加,但结构灵活,能够有效地分离出TTNT不同频点的信号,实用性更强。
The hopping frequency signals can be received accurately and efficiently by the channelized receiver in the case that the frequency point parameters are determined.The tree structure receiver ensures the independence of the channel,and is flexible to apply.Then tree structure receiver is applied to the signal reception of Tactical Targeting Networks Technology(TTNT)data link.The tree multi-level cascade structure receiver is designed for the TTNT signal which includes uniform distributed16hopping frequency points.The computation complexity of this structure is analyzed and the simulation results have proved the feasibility of the structure.Simulation results show that the tree multi-level cascade structure is efficient to separate the signals from different frequency points with the advantage of flexible structure and practicability,although the computation complexity of the tree multi-level cascade structure increases compared with that of the polyphase discrete Fourier transform(DFT)filter banks structure.
作者
刘轶凡
金虎
俞启明
LIU Yifan;JIN Hu;YU Qiming(Department of Communication Countermeasure,Electronic Engineering Institute,Hefei 230037,China)
出处
《电讯技术》
北大核心
2018年第3期284-289,共6页
Telecommunication Engineering
