Virtual spectrum analyzer of based on LabVIEW and measure error of frequency domain analysed

The demand of project technical field put forward higher requirement for the signal's analysis handling.The analysis requi-rement that the traditional virtual spectrum analyzer which has unitary function and expensive price and has not flexible use can not already satisfy modern test signal.Along with the swift development of IT,the appearance of the virtual spectrum analyzer with computer as core can solve above problem better,which is to guarantee the key of its measure quality in which the measure precision that raises the virtual spectrum analyzer.One design scheme of the virtual spectrum analyzer is suggested based on LabVIEW,which has discussed the method of the measure error of frequency domain that produces reason and reduces little this error.