Research And Realization Of HF Multichannel Communication Control Software

The research content of this article is derived from the scientific research project named " HF multi-channel communication control system ". Based on our previous research experience and technology of HF communication, the frequency selection and link establishment communication system is researched in the laboratory under the condition HF multi-channel reception. The paper mainly researches the link establishment communication protocol, and designs and implements the software of this protocol on the hardware platform basing ARM.The major work and results are outlined as follows:We put forward the "HF multi-channel communication control system" design scheme, introduce the function of various devices compositing the system, and analyze the reason selecting the development method of bare computer according to the characteristics of basing ARM communication control board.The link establishment communication protocol running on the communication control board is studied. The data units of communication protocol, protocol function modules and the relevant interface protocols between communications control panel and peripheral devices are designed. Protocol function modules include blind scan, blind link, working band scan, detection under scan, link establishment under scan, frequency changing and message transmission, etc; interface modules mainly include the remote control interface communicating with multi-channel transceiver and the interface connecting with Modem.The link establishment communication protocol software is realized on the communication control board, including time synchronization module, control module, communication module, interface module with multi-channel Modem board and remote control transceiver module. We complete the implementation and debug of the interface protocol between the communication control panel and the multi-channel Modem board. According to the remote interface protocol of the HF radio equipment, we complete the interface program between communication control board and radio station.In the first phase of the project, we build a simulation test platform to complete the debug for link establishment communications protocol software and perfection of function; in the second stage, we build a outdoor test platform with the principal project to simulate the actual environment, and complete the test of function and performance through reasonable test scheme and test cases.