Design Of Spectrum Anaylzer Based On LabVIEW

Based on the use of virtual instrument technology、software programming technology and some hardware, this paper aims at designing and implementation of virtual specturm analyzer. The specific processes will be a test signal passed through the data acquisition system to the computer and software on the computer tests and analysises of the signal information. And the results will output to a report or display on the screen. Finally then process completed the whole testing. In this paper, the principle of spectrum analyzer and its each function realization method conducted in-depth research, read and draw lessons from the related literature at home and abroad in the design of hardware and software design. The problems are studied in detail and auther gives the solving method during the process of designing. The final realization of the virtual spectrum analysis can be achieved normal signal analysis.Firstly, the research and development of domestic virtual spectrum analyzer in this paper were described, and also introduces the use of LabVIEW virtual platform.Secondly, this paper introduces the hardware design of virtual spectrum analyzer, and compared with the traditional of virtual spectrum analyzer. The spectrum analysis of the basic principle and technical index of simple is expounded, and the problems occur during hardware design and feasibility analysis.Then, this paper introduces the software design of virtual spectrum analyzer in detailed.Finally, the hardware system and software system combined together to carry out the test. The ultimate validation of the standard signal successfully collects. Virtual spectrum analyzer analysis successfully and reached the practical design purpose and full of Practicability.