8Okatan A,Salih A.Micro-controller based vehicle tracing system via use of GPS and GSM[C].Proceedings of International conference on recent advances in space teclmologies,2003:20-25. 被引量：1
9Kan K K H,Chan S K C.A dual-channel location estimation system for providing location services based on the GPS and GSM networks[C].Proceedings of International conference on advances information networking and applications,2003:32-34. 被引量：1
10Cohn Hamling.An Overview of GSM Data Services[J].The Institution of Electrical Engineers,1995(3):26-31. 被引量：1
