The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.19
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = FEBRUARY 19, 2025 12:46:02 EST
AI1571 ***********************************************************************
AI1571 CORS - This is a GPS Continuously Operating Reference Station.
AI1571 DESIGNATION - BLACKSBURG CORS ARP
AI1571 CORS_ID - BLKV
AI1571 PID - AI1571
AI1571 STATE/COUNTY- VA/MONTGOMERY
AI1571 COUNTRY - US
AI1571 USGS QUAD - BLACKSBURG (2019)
AI1571
AI1571 *CURRENT SURVEY CONTROL
AI1571 ______________________________________________________________________
AI1571* NAD 83(2011) POSITION- 37 12 21.63714(N) 080 24 52.27485(W) ADJUSTED
AI1571* NAD 83(2011) ELLIP HT- 607.780 (meters) (06/??/19) ADJUSTED
AI1571* NAD 83(2011) EPOCH - 2010.00
AI1571 ______________________________________________________________________
AI1571 GEOID HEIGHT - -31.918 (meters) GEOID18
AI1571 NAD 83(2011) X - 847,028.984 (meters) COMP
AI1571 NAD 83(2011) Y - -5,015,666.217 (meters) COMP
AI1571 NAD 83(2011) Z - 3,835,995.052 (meters) COMP
AI1571
AI1571 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AI1571 Standards:
AI1571 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AI1571 Horiz Ellip SD_N SD_E SD_h (unitless)
AI1571 -------------------------------------------------------------------
AI1571 NETWORK 0.14 0.35 0.05 0.06 0.18 -0.20065600
AI1571 -------------------------------------------------------------------
AI1571
AI1571.The coordinates were established by GPS observations
AI1571.and adjusted by the National Geodetic Survey in June 2019.
AI1571
AI1571.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AI1571.been affixed to the stable North American Tectonic Plate.
AI1571
AI1571.The coordinates are valid at the epoch date displayed above
AI1571.which is a decimal equivalence of Year/Month/Day.
AI1571
AI1571.Due to the release of the International GNSS Service (IGS) 2014
AI1571.realization of the International Terrestrial Reference Frame of 2014
AI1571.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AI1571.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AI1571.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AI1571.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AI1571.currently published epoch of 2010.00.
AI1571
AI1571.Additional information on MYCS2 is available at
AI1571.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AI1571
AI1571.Significant digits in the geoid height do not necessarily reflect accuracy.
AI1571.GEOID18 height accuracy estimate available here.
AI1571
AI1571.The PID for the CORS L1 Phase Center is DM7826.
AI1571
AI1571.Click photographs - Photos may exist for this station.
AI1571
AI1571.The XYZ, and position/ellipsoidal ht. are equivalent.
AI1571
AI1571.The ellipsoidal height was determined by GPS observations
AI1571.and is referenced to NAD 83.
AI1571
AI1571. The following values were computed from the NAD 83(2011) position.
AI1571
AI1571; North East Units Scale Factor Converg.
AI1571;SPC VA S - 1,098,567.952 3,330,066.418 MT 0.99994935 -1 09 43.1
AI1571;SPC VA S - 3,604,218.36 10,925,392.91 sFT 0.99994935 -1 09 43.1
AI1571;UTM 17 - 4,117,886.674 551,953.004 MT 0.99963325 +0 21 14.5
AI1571
AI1571! - Elev Factor x Scale Factor = Combined Factor
AI1571!SPC VA S - 0.99990463 x 0.99994935 = 0.99985399
AI1571!UTM 17 - 0.99990463 x 0.99963325 = 0.99953792
AI1571
AI1571_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SNB5195317886(NAD 83)
AI1571
AI1571 SUPERSEDED SURVEY CONTROL
AI1571
AI1571 ELLIP H (06/27/12) 607.788 (m) GP(2010.00) 0 0
AI1571 NAD 83(2011)- 37 12 21.63714(N) 080 24 52.27531(W) AD(2010.00) c
AI1571 NAD 83(2011)- 37 12 21.63713(N) 080 24 52.27494(W) AD(2010.00) c
AI1571 ELLIP H (08/??/11) 607.791 (m) GP(2010.00) c c
AI1571 ELLIP H (02/10/07) 607.808 (m) GP(2002.00)
AI1571 NAD 83(2007)- 37 12 21.63726(N) 080 24 52.27622(W) AD(2002.00) c
AI1571 NAD 83(CORS)- 37 12 21.63726(N) 080 24 52.27622(W) AD(2002.00) c
AI1571 ELLIP H (03/??/02) 607.808 (m) GP(2002.00) c c
AI1571 NAD 83(CORS)- 37 12 21.63708(N) 080 24 52.27656(W) AD(1997.00) c
AI1571 ELLIP H (12/??/99) 607.814 (m) GP(1997.00) c c
AI1571 NAD 83(CORS)- 37 12 21.63702(N) 080 24 52.27643(W) AD(1997.00) c
AI1571 ELLIP H (09/??/99) 607.940 (m) GP(1997.00) c c
AI1571 NAD 83(CORS)- 37 12 21.63708(N) 080 24 52.27656(W) AD(1997.00) c
AI1571 ELLIP H (12/??/97) 607.814 (m) GP(1997.00) c c
AI1571
AI1571.Superseded values are not recommended for survey control.
AI1571
AI1571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AI1571.See file dsdata.pdf to determine how the superseded data were derived.
AI1571
AI1571_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AI1571_MARK LOGO: NGS
AI1571_MAGNETIC: O = OTHER; SEE DESCRIPTION
AI1571
AI1571 STATION DESCRIPTION
AI1571
AI1571'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AI1571'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AI1571'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AI1571'ACCESSIBLE AT THE WORLDWIDE WEB.
AI1571'https://geodesy.noaa.gov/CORS/data.shtml
AI1571'https://geodesy.noaa.gov/CORS
*** retrieval complete.
Elapsed Time = 00:00:04