汽车专业外文翻译GPSGSM车辆监控系统的研究.docxVIP

附录The researches of GPS/GSM supervise and control system of vehicle1. SummarizationThe current supervise and control system of vehicle is a kind of high-technology. The GPS supervision and control system which using GPS reception, wireless communication, GIS to supervise, query and superintend the information of the mobile user’s dynamic position (longitude, latitude), time, status, etc. Dividing according tothesubfunction, thesupervisionandcontrolsystem ofvehicle is composed of three parts: positioning part, communicationpart,anddisplay part.There into,the often-used communicationmodes are VHF/UHF single channel call web, competitive groups’communication, and GSM short information traffic. The supervisionand control system of vehicle bases on VAF/UHF single channelcal web, it s design, organizing web and using is relatively simple,but it s working range is relatively small; that GSM short informationtraffic is used in positioning data transmit is popular, its coverage is wide, allowing roaming throughout the land, whereas,its time delay problem is the bottleneck that limits it，development,furthermore, its call function can not compare with the collectivegroupssystem; Collective group systemis dedicated dispatcherandsuperintendencesystem, ithasunspeakableadvantagetosome particular enterprise. But gather a group of systems to buildthepricea timetoohighandcoverthescopeissmall; Longrangedata that GSM that short information business used for the fixedpositiondatatodeliveris now thanforpopular,thecoverscopeisbig, canthe wholenationtravelextensively, and can realizethesmall batch quantity, its confirmable time delay, from the safety,stability, receive and dispatch the information to measure, can expand，using the expenses, two times development etc. The aspect isall and very ideal, and suffer the environment influence small, cansufficiencydemandthatsatisfythecustomer. Butthe system thatit’s time delay problem is a bottlenecktoinviteitsdevelopment.This text design and lette