Development And Implementation Of Short-Wave Communication Signal Quality Analysis System

With convenient use, wide coverage area, flexible networking, high safety, low operation cost, strong survivability and many other advantages,Shortwave communication is widely used in various industries and fields. Since shortwave signal propagation through ionospheric reflections, while the ionosphere changes with the time and weather conditions,so shortwave communication reflects clear direction. That is,at different time receiving antenna points to a different point, reception is different,so requires analysis of the received signal quality to determine the best point of the antenna, this is necessary to achieve better communication results, has important significance.The project development background is the shortwave communication systems based on network antenna, in view of the significant relationship between the short wave communication signal receiving effect and antenna pointing. In order to achieve better reception, through the analysis of signal quality, provides the basis for "antenna pointing networked remote control." This thesis focuses on the development process of shortwave communication signal quality analysis system, mainly studies the realization of the shortwave communication signal quality analysis system. The main work is as follows:1, The signal quality analysis algorithms. Based on the digital signal processing related knowledge, this thesis includes the research and analysis which can reflect shortwave signal quality, providing a theoretical basis for the signal quality analysis.2, The hardware system design. Hardware system is mainly to complete the acquisition antenna operating in one location. Combined with the actual needs of the project, the final selection of the hardware system design based on the "customize IPC +dedicated data acquisition module" and finally completed the detailed design.3, The software system development. Software system is designed to control the hardware device to collect the signals received by a antenna, and then analysis and processing the collected signals. The main functions of the software system are: setting sampling parameters, process sampling data, displaying the results, data storage and remote communications.4, The overall debugging. Debug the system as a whole, through experimental testing the various functions of the system designed by this thesis.Experiments show that: The "shortwave communication signal quality analysis system" designed in this thesis can effectively collect and analyze shortwave single, while has functions of data storage and remote communications. The implementation of the system has laid a good foundation for the realization of networked remote antenna control.