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 18:14:48 EST
DH3770 ***********************************************************************
DH3770 CORS - This is a GPS Continuously Operating Reference Station.
DH3770 DESIGNATION - LLANO CORS ARP
DH3770 CORS_ID - TXLL
DH3770 PID - DH3770
DH3770 STATE/COUNTY- TX/LLANO
DH3770 COUNTRY - US
DH3770 USGS QUAD - LLANO SOUTH (2019)
DH3770
DH3770 *CURRENT SURVEY CONTROL
DH3770 ______________________________________________________________________
DH3770* NAD 83(2011) POSITION- 30 44 00.71266(N) 098 40 42.90581(W) ADJUSTED
DH3770* NAD 83(2011) ELLIP HT- 307.586 (meters) (04/??/22) ADJUSTED
DH3770* NAD 83(2011) EPOCH - 2010.00
DH3770 ______________________________________________________________________
DH3770 GEOID HEIGHT - -23.269 (meters) GEOID18
DH3770 NAD 83(2011) X - -828,003.017 (meters) COMP
DH3770 NAD 83(2011) Y - -5,424,583.258 (meters) COMP
DH3770 NAD 83(2011) Z - 3,240,692.438 (meters) COMP
DH3770
DH3770 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DH3770 Standards:
DH3770 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DH3770 Horiz Ellip SD_N SD_E SD_h (unitless)
DH3770 -------------------------------------------------------------------
DH3770 NETWORK 0.23 0.58 0.08 0.11 0.30 0.12890100
DH3770 -------------------------------------------------------------------
DH3770
DH3770.The coordinates were established by GPS observations
DH3770.and adjusted by the National Geodetic Survey in April 2022.
DH3770
DH3770.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DH3770.been affixed to the stable North American Tectonic Plate.
DH3770
DH3770.The coordinates are valid at the epoch date displayed above
DH3770.which is a decimal equivalence of Year/Month/Day.
DH3770
DH3770.Due to the release of the International GNSS Service (IGS) 2014
DH3770.realization of the International Terrestrial Reference Frame of 2014
DH3770.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DH3770.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DH3770.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DH3770.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DH3770.currently published epoch of 2010.00.
DH3770
DH3770.Additional information on MYCS2 is available at
DH3770.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DH3770
DH3770.Significant digits in the geoid height do not necessarily reflect accuracy.
DH3770.GEOID18 height accuracy estimate available here.
DH3770
DH3770.The PID for the CORS L1 Phase Center is DR9271.
DH3770
DH3770.Click photographs - Photos may exist for this station.
DH3770
DH3770.The XYZ, and position/ellipsoidal ht. are equivalent.
DH3770
DH3770.The ellipsoidal height was determined by GPS observations
DH3770.and is referenced to NAD 83.
DH3770
DH3770. The following values were computed from the NAD 83(2011) position.
DH3770
DH3770; North East Units Scale Factor Converg.
DH3770;SPC TX C - 3,119,445.869 858,450.397 MT 0.99989261 +0 51 08.3
DH3770;SPC TX C -10,234,381.99 2,816,432.68 sFT 0.99989261 +0 51 08.3
DH3770;UTM 14 - 3,400,115.223 530,769.298 MT 0.99961168 +0 09 51.3
DH3770
DH3770! - Elev Factor x Scale Factor = Combined Factor
DH3770!SPC TX C - 0.99995170 x 0.99989261 = 0.99984431
DH3770!UTM 14 - 0.99995170 x 0.99961168 = 0.99956340
DH3770
DH3770_U.S. NATIONAL GRID SPATIAL ADDRESS: 14RNV3076900115(NAD 83)
DH3770
DH3770 SUPERSEDED SURVEY CONTROL
DH3770
DH3770 NAD 83(2011)- 30 44 00.71265(N) 098 40 42.90580(W) AD(2010.00) c
DH3770 ELLIP H (06/??/19) 307.562 (m) GP(2010.00) c c
DH3770 NAD 83(2011)- 30 44 00.71264(N) 098 40 42.90577(W) AD(2010.00) c
DH3770 ELLIP H (08/??/11) 307.558 (m) GP(2010.00) c c
DH3770 NAD 83(CORS)- 30 44 00.71242(N) 098 40 42.90612(W) AD(2002.00) c
DH3770 ELLIP H (06/??/05) 307.552 (m) GP(2002.00) c c
DH3770
DH3770.Superseded values are not recommended for survey control.
DH3770
DH3770.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DH3770.See file dsdata.pdf to determine how the superseded data were derived.
DH3770
DH3770_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DH3770
DH3770 STATION DESCRIPTION
DH3770
DH3770'DESCRIBED BY NATIONAL GEODETIC SURVEY 2022
DH3770'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DH3770'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DH3770'ACCESSIBLE AT THE WORLDWIDE WEB.
DH3770'https://geodesy.noaa.gov/CORS/data.shtml
DH3770'https://geodesy.noaa.gov/CORS
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