Article 28176 of sci.geo.satellite-nav:
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From: dmulcar@ibm.net   (Donald M. Mulcare)
Newsgroups: sci.geo.satellite-nav,sci.engr.surveying
Subject: US DOT DGPS Query
Date: 25 Nov 1996 12:59:54 GMT
Organization: Geodetic Advisor to Maryland, National Geodetic Survey
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=========================================================================
October 29

The Department of Transportation (DOT) has been designated by the
President to represent the Nation's civilian interests in the use
of the Global Positioning System (GPS).  DOT has begun studies to
determine the interest in and feasibility of extending the U.S.
Coast Guard (USCG) and U.S. Army Corps of Engineers Differential
Global Positioning System (DGPS).  James Arnold, of the Federal
Highway Administration (FHWA), is coordinating the studies and
will present the results to the DOT Position/Navigation
Committee.  

Designed to support maritime safety and navigation on the
Nation's coasts and navigable waterways, the coastal portion of
DGPS is almost complete and the river portion is being expanded. 
Like many technological developments, the project benefits more
than its original audience.  Surveyors, the land transportation
industry, geo-scientists, and meteorologists, among others, are
taking advantage of the broadcast DGPS signals over inland areas,
or they are using GPS data captured by NOAA's National Geodetic
Survey from the DGPS receivers for the Continuously Operating
Reference Station (CORS) network to perform high accuracy
positioning.

In its initial phase, the DGPS network has received praise for
meeting deadlines, economy of installation, and benefit to the
Nation's maritime safety.  However, because of its maritime
design, the DGPS network does not reach large areas of the
coterminous 48 states and Alaska.  Federal agencies including
FHWA, USCG, NOAA, and the Federal Railway Administration have
received inquiries about possible expansion of the DGPS network. 
In response to these requests, DOT tasked FWHA with making the
necessary studies.  An initial estimate is that about 20
additional sites could complete  coverage of the 48 states.

Mr. Arnold would significantly benefit from knowing the interests
of state, county, and municipal agencies, academia, and private
industry in the potential DGPS expansion and improvement of
safety in highway, railway, and other land based industries.  
Mr. Arnold can be contacted at:

                Department of Transportation
                Federal Highway Administration
                703-285-2974 (voice)
                703-285-2264 (fax)
                jaarnold@intergate.dot.gov

=========================================================================
 forwarded by
|====================================================|
|== Donald M. Mulcare                   email:dmulcar@ibm.net ==|
|== NGS Advisor to Maryland            410.545.8963 (voice)  ==|
|====visit the ngs home page at http://www.ngs.noaa.gov =====|
|====================================================|