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 18, 2025 01:48:56 EST
DR6984 ***********************************************************************
DR6984 CORS - This is a GPS Continuously Operating Reference Station.
DR6984 DESIGNATION - NRL MIDWAY RESEAR CORS ARP
DR6984 CORS_ID - MRC1
DR6984 PID - DR6984
DR6984 STATE/COUNTY- VA/STAFFORD
DR6984 COUNTRY - US
DR6984 USGS QUAD - WIDEWATER (2019)
DR6984
DR6984 *CURRENT SURVEY CONTROL
DR6984 ______________________________________________________________________
DR6984* NAD 83(2011) POSITION- 38 29 56.72798(N) 077 22 14.31709(W) ADJUSTED
DR6984* NAD 83(2011) ELLIP HT- 28.454 (meters) (09/??/21) ADJUSTED
DR6984* NAD 83(2011) EPOCH - 2010.00
DR6984 ______________________________________________________________________
DR6984 GEOID HEIGHT - -32.398 (meters) GEOID18
DR6984 NAD 83(2011) X - 1,092,812.668 (meters) COMP
DR6984 NAD 83(2011) Y - -4,877,223.391 (meters) COMP
DR6984 NAD 83(2011) Z - 3,948,968.147 (meters) COMP
DR6984
DR6984.Formal positional accuracy estimates are not available for this CORS
DR6984.because its coordinates were determined in part using modeled
DR6984.velocities. Approximate one-sigma accuracies for latitude, longitude,
DR6984.and ellipsoid height can be obtained from the short-term time series.
DR6984.Additional information regarding modeled velocities is available on
DR6984.the CORS Coordinates for MYCS2 web page:
DR6984.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
DR6984
DR6984.The coordinates were established by GPS observations
DR6984.and adjusted by the National Geodetic Survey in September 2021.
DR6984
DR6984.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DR6984.been affixed to the stable North American Tectonic Plate.
DR6984
DR6984.The coordinates are valid at the epoch date displayed above
DR6984.which is a decimal equivalence of Year/Month/Day.
DR6984
DR6984.Due to the release of the International GNSS Service (IGS) 2014
DR6984.realization of the International Terrestrial Reference Frame of 2014
DR6984.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DR6984.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DR6984.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DR6984.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DR6984.currently published epoch of 2010.00.
DR6984
DR6984.Additional information on MYCS2 is available at
DR6984.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DR6984
DR6984.Significant digits in the geoid height do not necessarily reflect accuracy.
DR6984.GEOID18 height accuracy estimate available here.
DR6984
DR6984.The PID for the CORS L1 Phase Center is DR6985.
DR6984
DR6984.Click photographs - Photos may exist for this station.
DR6984
DR6984.The XYZ, and position/ellipsoidal ht. are equivalent.
DR6984
DR6984.The ellipsoidal height was determined by GPS observations
DR6984.and is referenced to NAD 83.
DR6984
DR6984. The following values were computed from the NAD 83(2011) position.
DR6984
DR6984; North East Units Scale Factor Converg.
DR6984;SPC VA N - 2,093,003.466 3,598,510.757 MT 0.99995051 +0 42 17.5
DR6984;SPC VA N - 6,866,795.54 11,806,114.04 sFT 0.99995051 +0 42 17.5
DR6984;UTM 18 - 4,263,855.747 293,268.912 MT 1.00012634 -1 28 34.5
DR6984
DR6984! - Elev Factor x Scale Factor = Combined Factor
DR6984!SPC VA N - 0.99999554 x 0.99995051 = 0.99994605
DR6984!UTM 18 - 0.99999554 x 1.00012634 = 1.00012187
DR6984
DR6984_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STH9326863855(NAD 83)
DR6984
DR6984 SUPERSEDED SURVEY CONTROL
DR6984
DR6984.No superseded survey control is available for this station.
DR6984
DR6984_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DR6984
DR6984 STATION DESCRIPTION
DR6984
DR6984'DESCRIBED BY NATIONAL GEODETIC SURVEY 2021
DR6984'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DR6984'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DR6984'ACCESSIBLE AT THE WORLDWIDE WEB.
DR6984'https://geodesy.noaa.gov/CORS/data.shtml
DR6984'https://geodesy.noaa.gov/CORS
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