An Innovative Low Cost Location Determination System for Railroad Positive Train Control Applications

J.B. Archibald, T.J. Meyer

Abstract:	Modern train control systems necessitate the use of new and innovative technologies in the areas of signaling, communication, processing, and location determination. With respect to positioning, navigation requirements may include determining which track a train occupies, the train's along-track position from a reference point on that track to within 10 ft, its speed to within 1/2 mph, its direction of travel, and more, all in a rugged, reliable, cost-effective package. This paper highlights a low cost train Location Determination System (LDS) developed by Lockheed Martin for the North American Joint Positive Train Control (NAJPTC) Illinois Department of Transportation (IDOT) Positive Train Control program. The high-level system design is presented along with results of customer witnessed tests performed in Illinois during October 2002.
Published in:	Proceedings of the 59th Annual Meeting of The Institute of Navigation and CIGTF 22nd Guidance Test Symposium (2003) June 23 - 25, 2003 Hyatt Regency Hotel Albuquerque, NM
Pages:	267 - 272
Cite this article:	Archibald, J.B., Meyer, T.J., "An Innovative Low Cost Location Determination System for Railroad Positive Train Control Applications," Proceedings of the 59th Annual Meeting of The Institute of Navigation and CIGTF 22nd Guidance Test Symposium (2003), Albuquerque, NM, June 2003, pp. 267-272.
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