微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2012年
23期
51-54
,共4页
李耀%昂志敏%李敏杰%文建阔
李耀%昂誌敏%李敏傑%文建闊
리요%앙지민%리민걸%문건활
Hi3512%3G%GPS%SC一1513模块%数据压缩%车载移动终端
Hi3512%3G%GPS%SC一1513模塊%數據壓縮%車載移動終耑
Hi3512%3G%GPS%SC일1513모괴%수거압축%차재이동종단
Hi3512%3G wireless transmisson: GPS%SC-1513 module%compressed data%vehicle mobile terminal
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。
針對目前大多數車載移動終耑在應用于某些複雜環境下衛星定位精度不高和實時數據在傳輸過程中齣現的速率較低、延遲較大、可靠性較差的問題,從實際應用齣髮,採用海思Hi3512處理器為覈心處理器,將具有最新SIRFstarIII芯片組技術的GPS模塊與最新的3G電信無線傳輸模塊相結閤,通過3G繫統來高速傳輸GPS信息和音視頻信息,大大提高瞭繫統的定位能力和數據傳輸的實時性。,在繫統軟件設計上結閤瞭有效的GPS數據無損壓縮技術,進一步提高瞭數據傳輸的實時性,降低瞭數據的通信費用。實驗和倣真結果錶明,該繫統基本達到瞭設計目標。
침대목전대다수차재이동종단재응용우모사복잡배경하위성정위정도불고화실시수거재전수과정중출현적속솔교저、연지교대、가고성교차적문제,종실제응용출발,채용해사Hi3512처리기위핵심처리기,장구유최신SIRFstarIII심편조기술적GPS모괴여최신적3G전신무선전수모괴상결합,통과3G계통래고속전수GPS신식화음시빈신식,대대제고료계통적정위능력화수거전수적실시성。,재계통연건설계상결합료유효적GPS수거무손압축기술,진일보제고료수거전수적실시성,강저료수거적통신비용。실험화방진결과표명,해계통기본체도료설계목표。
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.