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Design and Implementation of Assisted GPS Navigation Systems Using TPEG Protocol of Terrestrial DMB Data Services  

Kim, Byung-Soo ((주)파인디지털)
Min, Seung-Wook (상명대학교 컴퓨터과학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.11B, 2010 , pp. 1618-1623 More about this Journal
Abstract
In this paper, we propose a new assisted global positioning system (A-GPS) using terrestrial digital multimedia broadcasting (T-DMB) data services. Because of the weak signal strength from GPS satellite and the signal blockage, it is difficult for the telematics terminal to determine the position in urban area. Proposed A-GPS system calculates pseudo range (PR) from timing information of GPS satellites and obtains the satellite information such as ephemeris from T-DMB station to determine the current position. Compared to conventional GPS system, the proposed system has better performance in terms of the fast time to first fix (TTFF), low horizontal dilution of precision (HDOP). Experimental results show that the proposed system is a feasible and robust solution.
Keywords
Assisted GPS; Telematics; DMB; TPEG;
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