“GPS·C”的意思、由来-开放百科全书

GPS·C, short for GPS Correction, was a Differential GPS data source for most of Canada maintained by the Canadian Active Control System, part of Natural Resources Canada. When used with an appropriate receiver, GPS·C improved real-time accuracy to about 1–2 meters, from a nominal 15 m accuracy.

Real-time data was collected at fourteen permanent ground stations spread across Canada, and forwarded to the central station, "NRC1", in Ottawa for processing.

Visiting the external webpage for this service on 2011-11-04, there is only a note saying that the service had been discontinued on 2011-04-01. There is a PDF link on that page to possible alternatives.

CDGPS

GPS·C information was broadcast Canada-wide on MSAT by the CDGPS, short for Canada-Wide DGPS Correction Service. CDGPS required a separate MSAT receiver, which output correction information in the RTCM format for input into any suitably equipped GPS receiver. The need for a separate receiver made it less cost-effective than solutions like WAAS or StarFire, which receive their correction information using the same antenna and receiver.

CDGPS Reference Stations^[1]

Station name

Location

Operational Date

Coordinates

ALBH

Canadian Forces Base, Esquimalt, British Columbia (near Victoria, British Columbia)

1992-05}}

48|23|23.2|N|123|29|14.8|W|region:CA|name=ALBH}}

ALGO

Algonquin Space Complex, Algonquin Provincial Park, Ontario

1991-01}}

45|57|20.8|N|78|4|16.9|W|region:CA|name=ALGO}}

CHUR

Geological Survey of Canada regional seismic station, Churchill, Manitoba

1993-04}}

58|45|32.6|N|94|5|19.4|W|region:CA|name=CHUR}}

DRAO

Dominion Radio Astrophysical Observatory, Penticton, British Columbia

1991-02}}

49|19|21.4|N|119|37|27.9|W|region:CA|name=DRAO}}

EUR2

New Environment Canada Weather Station building, Eureka, Nunavut

2005-10-09}}

79|59|20.2|N|85|56|15.2|W|region:CA|name=EUR2}}

FRDN

Hugh John Fleming Forestry Complex, near the University of New Brunswick in Fredericton, New Brunswick

2003-02}}

45|56|0.6|N|66|39|35.6|W|region:CA|name=FRDN}}

HLFX

Bedford Institute of Oceanography, Dartmouth, Nova Scotia

2001-12-19}}

44|41|0.7|N|63|36|40.6|W|region:CA|name=HLFX}}

NRC1

Institute for National Measurement Standards, National Research Centre, Ottawa, Ontario

1995-04}}

45|27|15.0|N|75|37|25.8|W|region:CA|name=NRC1}}

PRDS

Dominion Observatory in Priddis, Alberta (near Calgary, Alberta)

1997-01-07}}

50|52|16.8|N|114|17|36.5|W|region:CA|name=PRDS}}

SCH2

Transport Canada radio telecommunication facility, Schefferville, Quebec

1997-06-29}}

54|49|55.5|N|66|49|57.4|W|region:CA|name=SCH2}}

STJO

Geological Survey of Canada (NRCan) geomagnetic observing station, St. John's, Newfoundland

1992-05}}

47|35|42.8|N|52|40|39.9|W|region:CA|name=STJO}}

WHIT

Whitehorse, Yukon

1996-06}}

60|45|01.8|N|135|13|19.5|W|region:CA|name=WHIT}}

WINN

NavCanada Winnipeg Area Control Centre building, Winnipeg, Manitoba

1997-01-09}}

49|54|02.1|N|97|15|34.1|W|region:CA|name=WINN}}

YELL

Yellowknife, Northwest Territories

1991-01}}

62|28|51.2|N|114|28|50.4|W|region:CA|name=YELL}}

Shutdown

On April 9, 2010, it was announced that the service would be discontinued by March 31, 2011.

The service was decommissioned on March 31, 2011 and finally terminated on April 1, 2011, at 9:00 EDT.^[2]

See also

References

1. ^{{cite web|url=http://www.geod.nrcan.gc.ca/network_a/index_e.php|archive-url=https://web.archive.org/web/20051215090726/http://www.geod.nrcan.gc.ca/network_a/index_e.php|dead-url=yes|archive-date=2005-12-15|title=Active Control Point Stations|accessdate=2006-11-27}} (login needed)
2. ^{{cite press release|url=http://cdgps.com/docs/CDGPS_Termination_Announcement.pdf |title=CDGPS Termination Announcement |format=PDF |author=Gary Sawayama |accessdate=August 3, 2012 |date=April 1, 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20120204210204/http://cdgps.com/docs/CDGPS_Termination_Announcement.pdf |archivedate=February 4, 2012 |df= }}

External links

[https://web.archive.org/web/20060711171023/http://ess.nrcan.gc.ca/2002_2006/gnd/cdgps_e.php CDGPS (Canada-Wide DGPS Correction Service)]

GPS·C Distribution Using NTRIP{{dead link|date=October 2017 |bot=InternetArchiveBot |fix-attempted=yes }} — PDF format

3 : Global Positioning System|Natural Resources Canada|Lists of coordinates