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 08:34:30 EST
AI7403 ***********************************************************************
AI7403 CORS - This is a GPS Continuously Operating Reference Station.
AI7403 DESIGNATION - U.S. NAVAL OBSERV CORS ARP
AI7403 CORS_ID - USNO
AI7403 PID - AI7403
AI7403 STATE/COUNTY- DC/DISTRICT OF COLUMBIA
AI7403 COUNTRY - US
AI7403 USGS QUAD - WASHINGTON WEST (2016)
AI7403
AI7403 *CURRENT SURVEY CONTROL
AI7403 ______________________________________________________________________
AI7403* NAD 83(2011) POSITION- 38 55 08.23642(N) 077 03 58.39618(W) ADJUSTED
AI7403* NAD 83(2011) ELLIP HT- 50.152 (meters) (05/??/20) ADJUSTED
AI7403* NAD 83(2011) EPOCH - 2010.00
AI7403 ______________________________________________________________________
AI7403 GEOID HEIGHT - -31.994 (meters) GEOID18
AI7403 NAD 83(2011) X - 1,112,190.453 (meters) COMP
AI7403 NAD 83(2011) Y - -4,842,956.482 (meters) COMP
AI7403 NAD 83(2011) Z - 3,985,352.361 (meters) COMP
AI7403
AI7403 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AI7403 Standards:
AI7403 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AI7403 Horiz Ellip SD_N SD_E SD_h (unitless)
AI7403 -------------------------------------------------------------------
AI7403 NETWORK 0.01 0.02 0.00 0.00 0.01 -0.11596100
AI7403 -------------------------------------------------------------------
AI7403
AI7403.The coordinates were established by GPS observations
AI7403.and adjusted by the National Geodetic Survey in May 2020.
AI7403
AI7403.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AI7403.been affixed to the stable North American Tectonic Plate.
AI7403
AI7403.The coordinates are valid at the epoch date displayed above
AI7403.which is a decimal equivalence of Year/Month/Day.
AI7403
AI7403.Due to the release of the International GNSS Service (IGS) 2014
AI7403.realization of the International Terrestrial Reference Frame of 2014
AI7403.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AI7403.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AI7403.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AI7403.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AI7403.currently published epoch of 2010.00.
AI7403
AI7403.Additional information on MYCS2 is available at
AI7403.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AI7403
AI7403.Significant digits in the geoid height do not necessarily reflect accuracy.
AI7403.GEOID18 height accuracy estimate available here.
AI7403
AI7403.The PID for the CORS L1 Phase Center is AI7440.
AI7403
AI7403.Click photographs - Photos may exist for this station.
AI7403
AI7403.The XYZ, and position/ellipsoidal ht. are equivalent.
AI7403
AI7403.The ellipsoidal height was determined by GPS observations
AI7403.and is referenced to NAD 83.
AI7403
AI7403. The following values were computed from the NAD 83(2011) position.
AI7403
AI7403; North East Units Scale Factor Converg.
AI7403;UTM 18 - 4,309,812.541 320,870.087 MT 0.99999513 -1 17 54.2
AI7403
AI7403! - Elev Factor x Scale Factor = Combined Factor
AI7403!UTM 18 - 0.99999213 x 0.99999513 = 0.99998726
AI7403
AI7403_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2087009812(NAD 83)
AI7403
AI7403 SUPERSEDED SURVEY CONTROL
AI7403
AI7403 NAD 83(2011)- 38 55 08.23643(N) 077 03 58.39618(W) AD(2010.00) c
AI7403 ELLIP H (06/??/19) 50.151 (m) GP(2010.00) c c
AI7403 ELLIP H (06/27/12) 50.157 (m) GP(2010.00) 0 0
AI7403 NAD 83(2011)- 38 55 08.23647(N) 077 03 58.39606(W) AD(2010.00) c
AI7403 NAD 83(2011)- 38 55 08.23647(N) 077 03 58.39613(W) AD(2010.00) c
AI7403 ELLIP H (08/??/11) 50.151 (m) GP(2010.00) c c
AI7403 ELLIP H (02/10/07) 50.172 (m) GP(2002.00)
AI7403 NAD 83(2007)- 38 55 08.23669(N) 077 03 58.39673(W) AD(2002.00) c
AI7403 NAD 83(CORS)- 38 55 08.23669(N) 077 03 58.39673(W) AD(2002.00) c
AI7403 ELLIP H (03/??/02) 50.172 (m) GP(2002.00) c c
AI7403 NAD 83(CORS)- 38 55 08.23678(N) 077 03 58.39707(W) AD(1997.00) c
AI7403 ELLIP H (07/??/00) 50.177 (m) GP(1997.00) c c
AI7403
AI7403.Superseded values are not recommended for survey control.
AI7403
AI7403.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AI7403.See file dsdata.pdf to determine how the superseded data were derived.
AI7403
AI7403_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AI7403
AI7403 STATION DESCRIPTION
AI7403
AI7403'DESCRIBED BY NATIONAL GEODETIC SURVEY 2020
AI7403'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AI7403'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AI7403'ACCESSIBLE AT THE WORLDWIDE WEB.
AI7403'https://geodesy.noaa.gov/CORS/data.shtml
AI7403'https://geodesy.noaa.gov/CORS
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