Programming Design And Achieve For The Beacon Transmitting In The Radio Navigation System

The spread spectrum communication techniques are widely used in military communication system and navigation and positioning system, because it has the following performance: a high anti-jamming performance, easy to realize the multi-access communication and a high anti-reflecting performance. The radio navigation system that the paper works on is another example of applying the spread spectrum communication technique to the navigation and positioning fields.Firstly, the development of all kinds of navigation system around domestic and overseas is reviewed, the characteristic of navigation systems are compared and the foreground of the radio navigation system is prospected .Secondly, the theory of spread spectrum communication , radio navigation system and the constitution of radio navigation system are introduced. The application of positioning theory of the radio navigation system (beacon and the receiver) and is that the paper works on. Thirdly, Starting from the constitution and the properties, the paper states technique guidelines of the navigation beacons about the system, such as "Beidou" satellite positioning system, short-wave wide-band transmitter, high-efficiency antenna with low radiant elevation. Finally, the design and realization of the Monitor System software on radio navigation system. The language of Visual C++ is used in the establishment of monitor software ,which accomplishes starting and testing equipments, generating and transmitting spectrum signal , monitoring the running equipment and so on. The key techniques of the monitoring software how to go along with the information exchange and immerge between computer of industry control and peripheral instruments, which is laid stress on.