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 20:30:16 EST
DH3608 ***********************************************************************
DH3608 HT_MOD - This is a Height Modernization Survey Station.
DH3608 CORS - This is a GPS Continuously Operating Reference Station.
DH3608 DESIGNATION - HEMPSTEAD CORS ARP
DH3608 CORS_ID - TXHE
DH3608 PID - DH3608
DH3608 STATE/COUNTY- TX/WALLER
DH3608 COUNTRY - US
DH3608 USGS QUAD - HEMPSTEAD (2019)
DH3608
DH3608 *CURRENT SURVEY CONTROL
DH3608 ______________________________________________________________________
DH3608* NAD 83(2011) POSITION- 30 05 56.47230(N) 096 03 48.54479(W) ADJUSTED
DH3608* NAD 83(2011) ELLIP HT- 48.823 (meters) (04/??/22) ADJUSTED
DH3608* NAD 83(2011) EPOCH - 2010.00
DH3608* NAVD 88 ORTHO HEIGHT - 76.28 (meters) 250.3 (feet) GPS OBS
DH3608 **This station is in an area of suspected vertical motion (see below).
DH3608 ______________________________________________________________________
DH3608 NAVD 88 orthometric height was determined with an earlier geoid model
DH3608 GEOID HEIGHT - -27.523 (meters) GEOID18
DH3608 NAD 83(2011) X - -583,375.517 (meters) COMP
DH3608 NAD 83(2011) Y - -5,491,904.809 (meters) COMP
DH3608 NAD 83(2011) Z - 3,179,899.574 (meters) COMP
DH3608
DH3608 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DH3608 Standards:
DH3608 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DH3608 Horiz Ellip SD_N SD_E SD_h (unitless)
DH3608 -------------------------------------------------------------------
DH3608 NETWORK 0.27 0.71 0.09 0.13 0.36 0.08021200
DH3608 -------------------------------------------------------------------
DH3608
DH3608.The coordinates were established by GPS observations
DH3608.and adjusted by the National Geodetic Survey in April 2022.
DH3608
DH3608.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DH3608.been affixed to the stable North American Tectonic Plate.
DH3608
DH3608.The coordinates are valid at the epoch date displayed above
DH3608.which is a decimal equivalence of Year/Month/Day.
DH3608
DH3608.Due to the release of the International GNSS Service (IGS) 2014
DH3608.realization of the International Terrestrial Reference Frame of 2014
DH3608.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DH3608.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DH3608.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DH3608.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DH3608.currently published epoch of 2010.00.
DH3608
DH3608.Additional information on MYCS2 is available at
DH3608.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DH3608
DH3608.** This station is in an area of suspected land subsidence, uplift, or
DH3608.** crustal motion. NGS recommends this and all published orthometric
DH3608.** heights in such areas be validated before use as vertical control.
DH3608.** Click here to see a list and map of nearby stations with valid
DH3608.** orthometric heights. Note: While datasheets are updated in real-time,
DH3608.** updates to archived datasheets and the SE TX Valid OH map occur
DH3608.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DH3608.** heights as vertical control as they are deemed unreliable.
DH3608.**
DH3608.** If an established orthometric height is unavailable in the survey control
DH3608.** section, it should be considered suspect. To view suspect heights,
DH3608.** (in the superseded section), select 'Include suspect heights in vertical
DH3608.** motion areas' box from the datasheet retrieval page.
DH3608
DH3608.The orthometric height was determined by GPS observations and a
DH3608.high-resolution geoid model using precise GPS observation and
DH3608.processing techniques.
DH3608
DH3608.Significant digits in the geoid height do not necessarily reflect accuracy.
DH3608.GEOID18 height accuracy estimate available here.
DH3608
DH3608.The PID for the CORS L1 Phase Center is DR7675.
DH3608
DH3608.Click photographs - Photos may exist for this station.
DH3608
DH3608.The XYZ, and position/ellipsoidal ht. are equivalent.
DH3608
DH3608.The ellipsoidal height was determined by GPS observations
DH3608.and is referenced to NAD 83.
DH3608
DH3608. The following values were computed from the NAD 83(2011) position.
DH3608
DH3608; North East Units Scale Factor Converg.
DH3608;SPC TXSC - 4,254,658.283 883,008.394 MT 0.99995196 +1 26 19.1
DH3608;SPC TXSC -13,958,824.72 2,897,003.37 sFT 0.99995196 +1 26 19.1
DH3608;UTM 14 - 3,333,396.598 783,000.534 MT 1.00058822 +1 28 25.1
DH3608;UTM 15 - 3,333,718.352 204,757.347 MT 1.00067558 -1 32 14.8
DH3608
DH3608! - Elev Factor x Scale Factor = Combined Factor
DH3608!SPC TXSC - 0.99999233 x 0.99995196 = 0.99994429
DH3608!UTM 14 - 0.99999233 x 1.00058822 = 1.00058055
DH3608!UTM 15 - 0.99999233 x 1.00067558 = 1.00066791
DH3608
DH3608_U.S. NATIONAL GRID SPATIAL ADDRESS: 14RQU8300033396(NAD 83)
DH3608
DH3608 SUPERSEDED SURVEY CONTROL
DH3608
DH3608 NAD 83(2011)- 30 05 56.47229(N) 096 03 48.54478(W) AD(2010.00) c
DH3608 ELLIP H (01/??/22) 48.803 (m) GP(2010.00) c c
DH3608 NAD 83(2011)- 30 05 56.47246(N) 096 03 48.54479(W) AD(2010.00) c
DH3608 ELLIP H (06/??/19) 48.733 (m) GP(2010.00) c c
DH3608 ELLIP H (06/27/12) 48.770 (m) GP(2010.00) 0 0
DH3608 NAD 83(2011)- 30 05 56.47291(N) 096 03 48.54500(W) AD(2010.00) c
DH3608 NAD 83(2011)- 30 05 56.47250(N) 096 03 48.54479(W) AD(2010.00) c
DH3608 ELLIP H (08/??/11) 48.729 (m) GP(2010.00) c c
DH3608 NAD 83(CORS)- 30 05 56.47259(N) 096 03 48.54562(W) AD(2002.00) c
DH3608 ELLIP H (06/??/05) 48.785 (m) GP(2002.00) c c
DH3608 NAVD 88 (06/07/10) 76.23 (m) GEOID09 model used GPS OBS
DH3608
DH3608.Superseded values are not recommended for survey control.
DH3608
DH3608.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DH3608.See file dsdata.pdf to determine how the superseded data were derived.
DH3608
DH3608_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DH3608
DH3608 STATION DESCRIPTION
DH3608
DH3608'DESCRIBED BY NATIONAL GEODETIC SURVEY 2022
DH3608'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DH3608'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DH3608'ACCESSIBLE AT THE WORLDWIDE WEB.
DH3608'https://geodesy.noaa.gov/CORS/data.shtml
DH3608'https://geodesy.noaa.gov/CORS
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