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TxDOT has been using GPS technology since 1982. GPS uses a constellation of 24
Department of Defense satellites for navigation and positioning.
At the heart of the TxDOT GPS effort is a network of 90 high-accuracy base
stations referred to as "Regional Reference Points" (RRPs). TxDOT is
participating with the RRPs in the National Continuously Operating Reference
Stations (CORS) network operated by the National Geodetic Survey (NGS). The
RRPs are based on the North American Datum (NAD) 83 (EPOCH 2002.0) coordinates
and are used to improve positional accuracy through post-processing techniques.
This base station data is available for the purpose of post-processing for
differential corrections.
FTP Information.
GPS Data Disclaimer: This data has been supplied by state statute. No
expressed or implied warranties are made by TxDOT for the accuracy,
completeness, reliability, usability or suitability of the regional reference
point data. The department assumes no responsibility for incorrect results or
damages resulting from the use of the data.
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