【摘要】 提出了一种满足TDMA相关协议的新型船载自动识别系统设计。系统选用基于ARM7TDMI核的S3C44130X处理器,配合一款基带信号处理器芯片CMX910。设计的船载自动识别系统实现了ITDMA、RATDMA和SOTDMA的通信协议,实现了系统同步、发射和接收工作的要求,并完成了键盘与显示系统之间进行信息交互等所有主题通信软件的设计。进行了直接连接I/Q信号,通过转发器获取发送、接收信号,以及改变发送率等相关试验。相关与发射接收速率改变关系分析,并完成了整机的运行试验。试验结果表明:系统可以正确入网,并与其他船载设备以及基站之间进行正常稳定的信息收发工作。更多还原

【Abstract】 This paper presents a new shipborne automatic identification system(AIS) meeting with the TDMA communication protocol.This system takes S3C44130X of ARM7TDMI as the processor and implements the ITDMA,RATDMA and SOTDMA communication protocol,and completes the synchronization,transmission and reception.The system designed in this paper also accomplishes the software design of communication between the keyboard and display system,and so on.We have done some related experiments such as connecting the I/Q signal directly,transmitting and receiving with the transponder,changing the transmitting rate,and running the whole system.The whole system works well and can communicate with other mobile station on vessels and base station very well according to the communication protocol.更多还原