Non-GPS Distributed Intelligent Transportation System

Q. Zeng, J. Liu, W. Zhao,Y. Sun

Abstract:	GPS is very important for every country, not only for industry, but also for agriculture. It is widely used especially in developed countries. But GPS signal cannot be received at every place we worked, such as urban road with very tall buildings on both sides, indoor path for autonomous robot and fireman navigation, underground roadway for tube navigation, valley and woods path for tourist or walkman. Besides, with the development of science and technology, more and more electronic operations become austere, and many places could be the situation where GPS is denied. This evolution is placing more stringent requirements on researcher to provide Non-GPS navigation system where the emulation of deliberate GPS denial is critical for GPS-reliant equipment to providing information. In this Non-GPS distributed intelligent transportation system, wireless sensor is equipped to buses instead of GPS and GSM system. With the help of odometer equipped on buses, Micro Computer Unit on the bus can calculate the velocity of the buses and send the messages for other drivers and passengers. Thus, it can realize a mini intelligent system with the help of a special algorithm based on the wireless sensor and odometer information. The mini intelligent system can help to decrease the heavy traffic in local area, especially within the range (about 2 miles) of the wireless sensor by display the traffic information on the information board beside the road. In this local intelligent transportation system, no traffic centre computer is required to collect all of city transportation information and send all messages to the cars. This distributed intelligent system has many advantages. It can be used in different size of scale to settle the problem of Non-GPS, and even there is no information centre, it can still serve fluently for the drivers in short range area. The efficiency of Non-GPS distributed intelligent transportation system can be easily improved considering the local information communication, with few messages transferring to the information center computer. The result of test indicates that distributed intelligent transportation system based on wireless sensor is easy to be realized and it can improve the performance of transportation.
Published in:	Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009) September 22 - 25, 2009 Savannah International Convention Center Savannah, GA
Pages:	1050 - 1054
Cite this article:	Zeng, Q., Liu, J., Zhao, W., Sun, Y., "Non-GPS Distributed Intelligent Transportation System," Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009), Savannah, GA, September 2009, pp. 1050-1054.
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