Design And Implementation Of The Ultra Short Wave FHSS Data-transmitted Radio Link

With well anti-interference ability and secure ability, the Ultra short wave FHSSdata-transmitted radio is widely used in both civil and special communication. Designand implementation of the Ultra short wave FHSS data-transmitted radio simulativesoftware has important engineering and applied value in the research and developmentof the Ultra short wave FHSS data-transmitted radio.According to the demands of the users and in the base of deeply analyzing thedemands and the technical norms, this paper shows the overall designed proposal of thesoftware. The proposal can provide many methods of modulation and channel coding,and suits the channel environment of the hilly areas. The focal points of this paper lie inthe method of FHSS synchronization, modeling of the channels and evaluation of thenorms, etc. This paper uses synchronized method which regards TOD information as thesynchronous head, mainly expounds principal and key steps of this method. Combiningthe features of the frequency hopping communication and the Ultra short wave signalwhich transmits in hilly areas, the channels of the link are simulated and modeled.According to the evaluated norms which the users need, the tested and evaluatedmethods of the norms are showed and relevant modules of simulation and test aredesigned. Last, the simulative software of the Ultra short wave FHSS data-transmittedradio link is implemented by ADS and Matlab. The simulative software can evaluateand analyze BER, SNR after demodulating, frequency spectrum, EVM and the channelfade depth, etc.The simulative software of the Ultra short wave FHSS data-transmitted radio linkhas been tested in this paper. The results of the test indicate that the simulative softwarecan satisfy all the demands users put forward, and has been turned over to the users.