The Design of Virtual Spectrum Analyzer based on LabVIEW

The virtual spectrum analyzer is designed based on graphical programming language LabVIEW in this paper. The whole system is composed of both virtual signal generator and spectrum analysis. The virtual signal generator can generate sine wave, triangle wave, square wave, sawtooth wave and other standard signal. It also can add some noise to those signal. The function of spectrum analysis is to filter the signals and to add the window function on it, then to output the processed signals. It also analyzes time domain, frequency domain and harmonic of wave at the same time.