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Volume 24 Issue 2
Feb.  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(2): 145-148.
Wu Shaochun, Li Xianliang, Zhang Qishanet al. Data Link Design for Automatic Vehicle Location Systemwith High Capacity and Precision[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(2): 145-148. (in Chinese)
Citation: Wu Shaochun, Li Xianliang, Zhang Qishanet al. Data Link Design for Automatic Vehicle Location Systemwith High Capacity and Precision[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(2): 145-148. (in Chinese)
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Data Link Design for Automatic Vehicle Location Systemwith High Capacity and Precision

  • Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering

  • Received Date: 03 Dec 1996
  • Publish Date: 28 Feb 1998
    Abstract
  • The present automatic vehicle location system (AVLS) has some defaults such as smaller capacity,alarm collision and lower precision etc.Based on the characteristic analysis of AVLS and slot ALOHA (SALOHA),a new method of data link design,which is called Broadcast Reserved ALOHA (BRALOHA),is proposed in this paper,consequently the base station broadcasts differential GPS(DGPS) information,and mobile users transmit their location information reservely,and smooth GPS receiver's noise.It has been shown that BRALOHA is satisfied with the design for AVLS with high capacity and precision by its centralized communication scheme,the throughput versus offered load and throughput versus delay performance .

     

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    • References(1)
  • 1.Bethmann A.Automaticc vehicle location system.Electrical Communication,1994,(2):129~135 2.\ Denaro.Utilisation du GPS pour la localisation automatique V hicules et la gestion des flottes.Navigution,1991,(3):33~52 3. 黄 健.GPS车辆监控系统的研制:[学位论文].北京航空航天大学电子工程系,1995 4. 张学庆.采用GPS定位的车辆运动状态监控方法的研究.无线电通信技术,1994,20(6):65~75 5. 王祖林.基于车辆电台的城市无线GPS数据传输网络.遥测遥控,1996,17(2):16~21 6. Rom Raphael,Moshe Sidi.Multiple access protocols:performance and analysis.New York;[s.n],1991 7. Hunter Tom.Vehicle navigation using differential GPS.Vehicle Navigation and information systems confrene,1990.392~398 8. Papoulis A.Probability,Random Variables,and Stochastic Processes.New York:McGrawHill,1984 9. Kleinrock L,Lan S S.Packer switching in a multiaccess broadcast channel:performance evaluation.IEEE Trans on Commun,1975,23(4):410~422
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