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 11:07:40 EST
AM7021 ***********************************************************************
AM7021 CORS - This is a GPS Continuously Operating Reference Station.
AM7021 DESIGNATION - OHLONE PARK CORS ARP
AM7021 CORS_ID - OHLN
AM7021 PID - AM7021
AM7021 STATE/COUNTY- CA/CONTRA COSTA
AM7021 COUNTRY - US
AM7021 USGS QUAD - MARE ISLAND (2018)
AM7021
AM7021 *CURRENT SURVEY CONTROL
AM7021 ______________________________________________________________________
AM7021* NAD 83(2011) POSITION- 38 00 22.49873(N) 122 16 22.70915(W) ADJUSTED
AM7021* NAD 83(2011) ELLIP HT- -0.006 (meters) (08/??/24) ADJUSTED
AM7021* NAD 83(2011) EPOCH - 2010.00
AM7021 ______________________________________________________________________
AM7021 GEOID HEIGHT - -32.241 (meters) GEOID18
AM7021 NAD 83(2011) X - -2,686,855.682 (meters) COMP
AM7021 NAD 83(2011) Y - -4,254,627.220 (meters) COMP
AM7021 NAD 83(2011) Z - 3,905,990.576 (meters) COMP
AM7021
AM7021.Formal positional accuracy estimates are not available for this CORS
AM7021.because its coordinates were determined in part using modeled
AM7021.velocities. Approximate one-sigma accuracies for latitude, longitude,
AM7021.and ellipsoid height can be obtained from the short-term time series.
AM7021.Additional information regarding modeled velocities is available on
AM7021.the CORS Coordinates for MYCS2 web page:
AM7021.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
AM7021
AM7021.The coordinates were established by GPS observations
AM7021.and adjusted by the National Geodetic Survey in August 2024.
AM7021
AM7021.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AM7021.been affixed to the stable North American Tectonic Plate.
AM7021
AM7021.The coordinates are valid at the epoch date displayed above
AM7021.which is a decimal equivalence of Year/Month/Day.
AM7021
AM7021.Due to the release of the International GNSS Service (IGS) 2014
AM7021.realization of the International Terrestrial Reference Frame of 2014
AM7021.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AM7021.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AM7021.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AM7021.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AM7021.currently published epoch of 2010.00.
AM7021
AM7021.Additional information on MYCS2 is available at
AM7021.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AM7021
AM7021.Significant digits in the geoid height do not necessarily reflect accuracy.
AM7021.GEOID18 height accuracy estimate available here.
AM7021
AM7021.The PID for the CORS L1 Phase Center is DS2697.
AM7021
AM7021.Click photographs - Photos may exist for this station.
AM7021
AM7021.The XYZ, and position/ellipsoidal ht. are equivalent.
AM7021
AM7021.The ellipsoidal height was determined by GPS observations
AM7021.and is referenced to NAD 83.
AM7021
AM7021. The following values were computed from the NAD 83(2011) position.
AM7021
AM7021; North East Units Scale Factor Converg.
AM7021;SPC CA 3 - 668,641.258 1,844,307.282 MT 0.99993907 -1 05 07.7
AM7021;SPC CA 3 - 2,193,700.53 6,050,864.81 sFT 0.99993907 -1 05 07.7
AM7021;UTM 10 - 4,206,757.782 563,825.874 MT 0.99965017 +0 26 51.6
AM7021
AM7021! - Elev Factor x Scale Factor = Combined Factor
AM7021!SPC CA 3 - 1.00000000 x 0.99993907 = 0.99993907
AM7021!UTM 10 - 1.00000000 x 0.99965017 = 0.99965017
AM7021
AM7021_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEH6382506757(NAD 83)
AM7021
AM7021 SUPERSEDED SURVEY CONTROL
AM7021
AM7021 NAD 83(2011)- 38 00 22.49819(N) 122 16 22.70872(W) AD(2010.00) c
AM7021 ELLIP H (06/??/19) -0.015 (m) GP(2010.00) c c
AM7021 NAD 83(2011)- 38 00 22.49824(N) 122 16 22.70886(W) AD(2010.00) c
AM7021 ELLIP H (08/??/11) -0.021 (m) GP(2010.00) c c
AM7021 NAD 83(CORS)- 38 00 22.49334(N) 122 16 22.70444(W) AD(2002.00) c
AM7021 ELLIP H (08/??/06) -0.005 (m) GP(2002.00) c c
AM7021 NAD 83(CORS)- 38 00 22.49332(N) 122 16 22.70468(W) AD(2002.00) c
AM7021 ELLIP H (05/??/02) -0.009 (m) GP(2002.00) c c
AM7021
AM7021.Superseded values are not recommended for survey control.
AM7021
AM7021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AM7021.See file dsdata.pdf to determine how the superseded data were derived.
AM7021
AM7021_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AM7021
AM7021 STATION DESCRIPTION
AM7021
AM7021'DESCRIBED BY NATIONAL GEODETIC SURVEY 2024
AM7021'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AM7021'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AM7021'ACCESSIBLE AT THE WORLDWIDE WEB.
AM7021'https://geodesy.noaa.gov/CORS/data.shtml
AM7021'https://geodesy.noaa.gov/CORS
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