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 10:32:22 EST
DF8715 ***********************************************************************
DF8715 HT_MOD - This is a Height Modernization Survey Station.
DF8715 CORS - This is a GPS Continuously Operating Reference Station.
DF8715 DESIGNATION - WILLIAMSTON CORS ARP
DF8715 CORS_ID - NCWI
DF8715 PID - DF8715
DF8715 STATE/COUNTY- NC/MARTIN
DF8715 COUNTRY - US
DF8715 USGS QUAD - WILLIAMSTON (2019)
DF8715
DF8715 *CURRENT SURVEY CONTROL
DF8715 ______________________________________________________________________
DF8715* NAD 83(2011) POSITION- 35 49 48.75040(N) 077 02 04.93162(W) ADJUSTED
DF8715* NAD 83(2011) ELLIP HT- -20.541 (meters) (06/??/19) ADJUSTED
DF8715* NAD 83(2011) EPOCH - 2010.00
DF8715* NAVD 88 ORTHO HEIGHT - 15.53 (meters) 51.0 (feet) GPS OBS
DF8715 ______________________________________________________________________
DF8715 NAVD 88 orthometric height was determined with geoid model GEOID99
DF8715 GEOID HEIGHT - -36.029 (meters) GEOID99
DF8715 GEOID HEIGHT - -36.062 (meters) GEOID18
DF8715 NAD 83(2011) X - 1,161,523.572 (meters) COMP
DF8715 NAD 83(2011) Y - -5,045,050.602 (meters) COMP
DF8715 NAD 83(2011) Z - 3,712,921.681 (meters) COMP
DF8715
DF8715 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DF8715 Standards:
DF8715 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DF8715 Horiz Ellip SD_N SD_E SD_h (unitless)
DF8715 -------------------------------------------------------------------
DF8715 NETWORK 0.30 0.73 0.10 0.14 0.38 -0.05639200
DF8715 -------------------------------------------------------------------
DF8715
DF8715.The coordinates were established by GPS observations
DF8715.and adjusted by the National Geodetic Survey in June 2019.
DF8715
DF8715.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DF8715.been affixed to the stable North American Tectonic Plate.
DF8715
DF8715.The coordinates are valid at the epoch date displayed above
DF8715.which is a decimal equivalence of Year/Month/Day.
DF8715
DF8715.Due to the release of the International GNSS Service (IGS) 2014
DF8715.realization of the International Terrestrial Reference Frame of 2014
DF8715.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DF8715.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DF8715.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DF8715.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DF8715.currently published epoch of 2010.00.
DF8715
DF8715.Additional information on MYCS2 is available at
DF8715.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DF8715
DF8715.The orthometric height was determined by GPS observations and a
DF8715.high-resolution geoid model using precise GPS observation and
DF8715.processing techniques.
DF8715
DF8715.Significant digits in the geoid height do not necessarily reflect accuracy.
DF8715.GEOID18 height accuracy estimate available here.
DF8715
DF8715.The PID for the CORS L1 Phase Center is DJ3085.
DF8715
DF8715.Click photographs - Photos may exist for this station.
DF8715
DF8715.The XYZ, and position/ellipsoidal ht. are equivalent.
DF8715
DF8715.The ellipsoidal height was determined by GPS observations
DF8715.and is referenced to NAD 83.
DF8715
DF8715. The following values were computed from the NAD 83(2011) position.
DF8715
DF8715; North East Units Scale Factor Converg.
DF8715;SPC NC - 232,519.812 787,153.493 MT 0.99992345 +1 08 03.5
DF8715;SPC NC - 762,858.75 2,582,519.42 sFT 0.99992345 +1 08 03.5
DF8715;UTM 18 - 3,967,027.144 316,212.483 MT 1.00001624 -1 11 29.1
DF8715
DF8715! - Elev Factor x Scale Factor = Combined Factor
DF8715!SPC NC - 1.00000322 x 0.99992345 = 0.99992667
DF8715!UTM 18 - 1.00000322 x 1.00001624 = 1.00001946
DF8715
DF8715_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUE1621267027(NAD 83)
DF8715
DF8715 SUPERSEDED SURVEY CONTROL
DF8715
DF8715 ELLIP H (06/27/12) -20.525 (m) GP(2010.00) 0 0
DF8715 NAD 83(2011)- 35 49 48.75052(N) 077 02 04.93182(W) AD(2010.00) c
DF8715 NAD 83(2011)- 35 49 48.75037(N) 077 02 04.93157(W) AD(2010.00) c
DF8715 ELLIP H (08/??/11) -20.544 (m) GP(2010.00) c c
DF8715 ELLIP H (02/10/07) -20.508 (m) GP(2002.00)
DF8715 NAD 83(2007)- 35 49 48.75046(N) 077 02 04.93218(W) AD(2002.00) c
DF8715 NAD 83(CORS)- 35 49 48.75046(N) 077 02 04.93218(W) AD(2002.00) c
DF8715 ELLIP H (11/??/03) -20.508 (m) GP(2002.00) c c
DF8715
DF8715.Superseded values are not recommended for survey control.
DF8715
DF8715.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DF8715.See file dsdata.pdf to determine how the superseded data were derived.
DF8715
DF8715_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DF8715
DF8715 STATION DESCRIPTION
DF8715
DF8715'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DF8715'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DF8715'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DF8715'ACCESSIBLE AT THE WORLDWIDE WEB.
DF8715'https://geodesy.noaa.gov/CORS/data.shtml
DF8715'https://geodesy.noaa.gov/CORS
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