Texas Department of Transportation, Dallas District Differential Global Positioning System Real-Time Spatial Reference Frame Network

Stacey D. Lyle and Lenard. Wall

Abstract:	The Texas Department of Transportation (TxDOT), Dallas District seeks to establish a network of real-time kinematic (RTK) differential Global Positioning Systems (DGPS) in varied locations around the Dallas, Texas metroplex to support surveying and mapping applications. This spatial reference frame network (SRFN) will be used to support surveying, mapping and engineering of transportation systems maintained by the Dallas District. The network will also function to support other private and local governmental entities. The purpose of the network is to promote, protect, and enhance the State of Texas economy, security, environment, and quality of life, as well as set precedence for advanced real-time data positioning within the science of surveying, mapping and engineering. A prototype real-time SRFN was established to research the proposed configuration. This research is not a discussion of specific GPS manufactures’ systems performance, but it is to establish an understanding of varied DGPS units working within a homogenous user established network. Several goals are sought during this research that will be conducted with an application of ground truthing geographic information systems aerial images collected for internal research. SRFN will utilize cellular wireless communication technology to obtain RTK corrections. Finally, this research will show RTK solutions within Dallas District SRFN with a mix of different models of GPS units. Results show procedures and a quantitative solution in terms of accuracy, quality, latency and communication robustness.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	2373 - 2378
Cite this article:	Lyle, Stacey D., Wall, Lenard., "Texas Department of Transportation, Dallas District Differential Global Positioning System Real-Time Spatial Reference Frame Network," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 2373-2378.
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