摘要
针对目前大多数车载移动终端在应用于某些复杂环境下卫星定位精度不高和实时数据在传输过程中出现的速率较低、延迟较大、可靠性较差的问题,从实际应用出发,采用海思Hi3512处理器为核心处理器,将具有最新SIRFstarIII芯片组技术的GPS模块与最新的3G电信无线传输模块相结合,通过3G系统来高速传输GPS信息和音视频信息,大大提高了系统的定位能力和数据传输的实时性。在系统软件设计上结合了有效的GPS数据无损压缩技术,进一步提高了数据传输的实时性,降低了数据的通信费用。实验和仿真结果表明,该系统基本达到了设计目标。
According to the problems of the low-accuracy of satellite position in some complex environment and the low-rate, poor-delay and the bad-reliability of the real-time data transmission of the current domestic vehicle mobile terminal, and coming from the practical application, the Hi3512 processor is used as the core processor, the latest SIRF starlII chipset technology of GPS module and the latest 3G wireless telecommunication transmission module is combined in this paper. And the GPS data, audio and video information is transmitted through 3G system, which improves the location ability and the real-time of the data transmission. It combines the effective quasi-]ossless compression technology in GPS data procession in the software design, as a result, which improves the real-time of data transmission and reduces the data communication cost. Experiment and simulation results show that the system reaches the basic design target.
出处
《微型机与应用》
2012年第23期51-54,共4页
Microcomputer & Its Applications
