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 21:18:41 EST
DF8783 ***********************************************************************
DF8783 CORS - This is a GPS Continuously Operating Reference Station.
DF8783 DESIGNATION - HOUSTON 7 COOP CORS ARP
DF8783 CORS_ID - COH7
DF8783 PID - DF8783
DF8783 STATE/COUNTY- TX/HARRIS
DF8783 COUNTRY - US
DF8783 USGS QUAD - ALDINE (2019)
DF8783
DF8783 *CURRENT SURVEY CONTROL
DF8783 ______________________________________________________________________
DF8783* NAD 83(CORS) POSITION- 29 52 38.12914(N) 095 29 47.75747(W) ADJUSTED
DF8783* NAD 83(CORS) ELLIP HT- -0.266 (meters) (01/??/06) ADJUSTED
DF8783* NAD 83(CORS) EPOCH - 2002.00
DF8783 **This station is in an area of suspected vertical motion (see below).
DF8783 ______________________________________________________________________
DF8783 GEOID HEIGHT - -27.462 (meters) GEOID18
DF8783 NAD 83(CORS) X - -530,183.717 (meters) COMP
DF8783 NAD 83(CORS) Y - -5,509,596.059 (meters) COMP
DF8783 NAD 83(CORS) Z - 3,158,583.085 (meters) COMP
DF8783 HORZ ORDER - SPECIAL (CORS)
DF8783 ELLP ORDER - SPECIAL (CORS)
DF8783
DF8783.Formal positional accuracy estimates are not available for this CORS
DF8783.because its coordinates were determined in part using modeled
DF8783.velocities. Approximate one-sigma accuracies for latitude, longitude,
DF8783.and ellipsoid height can be obtained from the short-term time series.
DF8783.Additional information regarding modeled velocities is available on
DF8783.the CORS Coordinates for MYCS2 web page:
DF8783.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
DF8783
DF8783.The coordinates were established by GPS observations
DF8783.and adjusted by the National Geodetic Survey in January 2006.
DF8783
DF8783.The datum tag of NAD 83(CORS) is equivalent to NAD 83(CORS96).
DF8783
DF8783.The coordinates are valid at the epoch date displayed above
DF8783.which is a decimal equivalence of Year/Month/Day.
DF8783
DF8783.Due to the release of the International GNSS Service (IGS) 2014
DF8783.realization of the International Terrestrial Reference Frame of 2014
DF8783.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DF8783.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DF8783.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DF8783.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DF8783.currently published epoch of 2010.00.
DF8783
DF8783.Additional information on MYCS2 is available at
DF8783.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DF8783
DF8783.** This station is in an area of suspected land subsidence, uplift, or
DF8783.** crustal motion. NGS recommends this and all published orthometric
DF8783.** heights in such areas be validated before use as vertical control.
DF8783.** Click here to see a list and map of nearby stations with valid
DF8783.** orthometric heights. Note: While datasheets are updated in real-time,
DF8783.** updates to archived datasheets and the SE TX Valid OH map occur
DF8783.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DF8783.** heights as vertical control as they are deemed unreliable.
DF8783.**
DF8783.** If an established orthometric height is unavailable in the survey control
DF8783.** section, it should be considered suspect. To view suspect heights,
DF8783.** (in the superseded section), select 'Include suspect heights in vertical
DF8783.** motion areas' box from the datasheet retrieval page.
DF8783
DF8783.Significant digits in the geoid height do not necessarily reflect accuracy.
DF8783.GEOID18 height accuracy estimate available here.
DF8783
DF8783.The PID for the CORS L1 Phase Center is DG4090.
DF8783
DF8783.Click photographs - Photos may exist for this station.
DF8783
DF8783.The XYZ, and position/ellipsoidal ht. are equivalent.
DF8783
DF8783.The ellipsoidal height was determined by GPS observations
DF8783.and is referenced to NAD 83.
DF8783
DF8783. The following values were computed from the NAD 83(CORS) position.
DF8783
DF8783; North East Units Scale Factor Converg.
DF8783;SPC TXSC - 4,231,592.427 938,363.528 MT 0.99990790 +1 42 58.9
DF8783;SPC TXSC -13,883,149.49 3,078,614.34 sFT 0.99990790 +1 42 58.9
DF8783;UTM 15 - 3,307,802.673 258,874.293 MT 1.00031741 -1 14 39.4
DF8783
DF8783! - Elev Factor x Scale Factor = Combined Factor
DF8783!SPC TXSC - 1.00000004 x 0.99990790 = 0.99990794
DF8783!UTM 15 - 1.00000004 x 1.00031741 = 1.00031745
DF8783
DF8783_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RTP5887407802(NAD 83)
DF8783
DF8783 SUPERSEDED SURVEY CONTROL
DF8783
DF8783 NAD 83(CORS)- 29 52 38.12885(N) 095 29 47.75773(W) AD(2002.00) c
DF8783 ELLIP H (08/??/03) -0.231 (m) GP(2002.00) c c
DF8783
DF8783.Superseded values are not recommended for survey control.
DF8783
DF8783.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DF8783.See file dsdata.pdf to determine how the superseded data were derived.
DF8783
DF8783_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DF8783
DF8783 STATION DESCRIPTION
DF8783
DF8783'DESCRIBED BY NATIONAL GEODETIC SURVEY 2006
DF8783'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DF8783'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DF8783'ACCESSIBLE AT THE WORLDWIDE WEB.
DF8783'https://geodesy.noaa.gov/CORS/data.shtml
DF8783'https://geodesy.noaa.gov/CORS
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