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sci.geo.satellite-nav (Global Satellite Navigation) (sci.geo.satellite-nav) Discussion of global navigation satellite systems (GNSS). Topics include the technical aspects of GNSS operation, user experiences in the use of GNSS, information regarding GNSS products and discussion of GNSS policy (such as GPS selective availability).

NDGPS Destined for the Technological Boneyard



 
 
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Old August 26th 15, 08:49 PM posted to sci.geo.satellite-nav
Sam Wormley[_2_]
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Default NDGPS Destined for the Technological Boneyard

NDGPS Destined for the Technological Boneyard
http://gpsworld.com/ndgps-destined-f...ical-boneyard/


Let us not exaggerate ó nor prematurely announce ó the death of a
subsystem. However, the demise of the U.S. Nationwide Differential
GPS (NDGPS) network can be confidently foretold. Although a Federal
Register notice dated Aug. 18 merely seeks public comment on plans to
shut down a large portion of NDGPS, the handwriting is on the wall.
Once having writ, the hand of fate moves on.

We should neither lament nor applaud. NDGPS, like many other
technologies, has seen its time come and go, while competitors have
arisen to perform its role and take its place. Such is evolution in
the industrial world as well as in the biological kingdoms.

In 2016, three quarters of the currently operating NDGPS reference
stations will be taken down and decommissioned. Thatís not what the
federal notice states, but thatís what it effectively says. The
documentís comment period ends on Nov. 16. It is difficult to
conceive of a public outcry that might reverse the intended course of
the U.S. Coast Guard, Department of Transportation and Army Corps of
Engineers.




The real death blow came in 2013, when the Federal Railroad
Administration (FRA) eliminated an NDGPS requirement from its PTC
program. The railroads, never a nimble industry nor one receiving the
governmental support it enjoys in other countries, had by that time
become the last hope of NDGPS. Ag users had already for the most part
moved over to WAAS and commercial SBAS providers. Marine users did
not by themselves form a sufficiently large constituency, and even
they were not fully equipped nor wholesale adopters of the system.





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