【摘要】 介绍了学生自主实验用虚拟频谱分析仪的设计方案。该方案以PC机为硬件平台,以图形化编程语言LabVIEW为软件平台。整个系统由原始信号产生模块和频谱分析模块两部分组成,原始信号由虚拟信号发生器和声卡信号采集2种方式产生;频谱分析模块首先对上述信号进行加窗函数处理,然后进行频域分析,最后输出处理后的波形和数值结果。更多还原

【Abstract】 This paper introduced a virtual spectrum analyzer design,with which the students can have experiment on their own.The project is based on PC,its hardware platform,and LabVIEW which is a graphical programming language for software platform.The entire system is composed of two parts: the original signal source module and spectrum analysis module,the original source can be generated by two sub-ways: the virtual signal generator and signal acquisition.Spectral analysis module first processes the signal with the window function,and then carries out frequency-domain analysis,the final output is the post-wave and numerical results.更多还原