基于北斗卫星通信的船载数据采集系统

Design of a Shipborne Data Acquisition System Based on Beidou Satellite Communication

介绍了一种复用卫星报文通道、低成本的船载数据采集系统。针对大范围和长时间海洋数据采集的高成本问题,利用ARM嵌入式系统的高可靠性,低成本和高性能的特点,设计了一套完整的船载数据采集、通信阵列和数据处理系统。通过分析船载北斗卫星设备的通信接口,设计了卫星数据通道的复用通信模块;针对北斗报文通信的内容过滤特点,设计了北斗通道的伪汉字编码方案;研发了北斗卫星通信阵列及其控制协议,扩展了通讯信道,提升了系统的并发处理能力。目前该系统已经投入实际使用,运行情况良好。

Based on the technology of reusing satellite message communicating channels, a low-cost shipborne data acquisition system is designed in this paper. To resolve the problem of high costs in large-scale and prolonged marine data acquisition, a set of shipborne data acquisition, communication array and data processing system is designed using the ARM embedded system which has advantages of high reliability, low cost and high performance.By analyzing the communication interface of the shipborne Beidou satellite equipment, the multiplexed communication module is designed, a pseudo Chinese character coding scheme for Beidou channels is developed to overcome the shortcomings of long delay and data loading of the Beidou system, and the efficient data compression algorithm and stable communication protocol help solve the problem. In addition, the Beidou satellite communication array and its corresponding control protocol extend the communication channels to enhance the parallel processing capability of the system. Currently, the system has been put into practical application and runs in good condition.