一种适用于频谱监测的高效中频信道化结构

针对软件无线电接收机对空中通信信号进行监测搜索的过程中频率分辨率与搜索速度的矛盾,在分析中频信道化技术原理的基础上,设计了一种适用于频谱监测的信道化结构,通过Simulink建模仿真验证了此种结构可以无误差地还原输入信号频谱,根据实际项目需要,利用Xilinx集成设计工具Sysgen进行快速设计并最终在FPGA中实现了八信道的信道化结构。该设计方法可以大大加快信道化接收机的硬件实现速度,具有一定的工程实际应用价值。

A high-efficient IF channelized structure for spectrum monitoring

For the contradiction between frequency resolution and search speed in communication signal monitoring search process by software radio receiver, a suitable channelized structure is proposed based on analysis of the principle of the intermediate frequency channelized technology. Simulation results show that this structure offers the error-free approximation to recover the spectrum of input signal.With the help of Xilinx integrated design tool System Generator, an 8-channel structure is realized in FPGA according to the actual need of the project.This design method can greatly improve the hardware realization speed of channelized receiver and find engineering application value.