基于虚拟仪器技术的频谱监测与分析系统的实现

Implementation of Spectrum Monitoring and Analyzing System Based on Virtual Instrument Technology

随着虚拟仪器技术的不断发展进步,除了传统的测控领域外,其在通信及信号处理领域的应用也日益广泛。本文基于NI(National Instruments)的PXIe硬件模块和Labview软件平台,依据虚拟仪器的思想,设计了简易的频谱监测和分析系统,成功实现对特定频段无线电频谱的监测、分析、记录及远程查看与控制功能,克服了传统频谱监测系统运行成本高、灵活度不足等缺点。实验表明,该软件能够完成宽带频谱监测、单一信号分析与波形记录和远程控制、查看等功能,验证了方案的有效性。

With the fast development of the virtual instrument technology, it has been applied to vari- ous communication signal processing applications except for traditional measurement and control field. According to the ideas of the virtual instrument, a simple spectrum monitoring and analyzing system is implemented based on NI PXIe hardware and Labview development software. Functions of spectrum monitoring, analyzing, recording and remote control are integrated into the system. Com- pared with traditional spectrum monitoring system, the system proposed overcomes the weaknesses of high operation cost and low flexibility. Experiments verify the functions of wideband spectrum moni- toring, single signal analyzing, waveform recording and remote control, which show the effectiveness of the proposed system.