Design and implementation of spectrum synthetic based on virtual instrument

Using the successful experience of Software Radio for reference, taking the generation and reception of the signal as research object, the general auto test platform is divided into several LXI test modules, which are mutually independent. The LXI digitizer module and the LXI Down-Converter module are selected as the platform of spectrum synthetic. In the design of its spectrum software design, the Labwindows/CVI is taken as the development tool, and the multi-thread technique is applied to ensure the running speed and response speed. Finally, the synthetic of spectrum analysis is achieved, which lay the foundation of the practicality of the Synthetic Instrument.