Design And Implementation Of A New Synchronous Data And Audio Transmission And Anti-interference Radio

The VHF radio is one of the important methods on the wireless communication in the tactical communication of the army. With the development of the air-ground tactical data link system, the air-ground communication not only needs sending voices on time, but also needs transmitting a lot of data promptly. Up to now,our army's most anti-jamming Very High Frequency(VHF)radio is analog mode which singlely transmit sound or digital mode which singlely transmit data.Radio which can transmit both sound and data is in the process of research,and have not applied in army.So,the research on this kind of radio has practical significance. The task is mainly expected to do the design and implementation of the control unit on the transceiver terminal.The paper introduces the background of the task firstly, analyses the importance of the development of the VHF radio transceiver with the voice and data transmitting together, and puts forward a preliminary plan according the system requests. Then a detailed design is separately given in both hardware and software, and all realizes completely.In the realizations of the hardware, with the detailed analysis of the development method and basis process with the ARM system, I use the MPU chip LPC2131 of the ARM7 as the center of the control unit. I extend the parallel data interface using the I2C bus. Then, we have finished the design of the interface which is between LPC2131 and AMBE2000, also between LPC2131 and Q1900. At the same time I extend two UART ports with the RS232 standard in order to transmit the serial data. I also design the circuit for the system function transforming. In the developments of the software, I have done some researches of the way which transfers the data on synchronization or asynchronous transfer mode, and known the methods how to design the data frame. Then I show out the data frame for this radio system. According to this, I write the program for the system control and management, and I also write programs for the communication and the function on the system. Finally, I have made the circuit board for this terminal and also done some adjustments and tests using the JTAG port on the board.After the initial tests, we see that this radio transceiver terminal can give a good voice transit, and the voice can be heard clearly. The radio transceiver terminal has three functions which can transmit voice or data alone, and can transmit the voice and the data together. Those are the same with the system targets. But we also have some problems in detail on the design. We expect that this terminal will be used in the radiotransceiver after our continuous adjustment and tests.