NCDU00USA Site Information Form NCGS Continuously Operating Reference Station See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Don Haw as per Bart Alligood Date Prepared : 2024-04-09 Report Type : UPDATE If Update: Previous Site Log : ncdu_20210110.log Modified/Added Sections : 1, 3.6, 4.5 1. Site Identification of the GNSS Monument Site Name : Duck 3 Four Character ID : NCDU Monument Inscription : IERS DOMES Number : 49846M001 CDP Number : Monument Description : Braced steel square tube mounted on a : masonary and concrete building. Height of the Monument : 10.2 meters above the ground Monument Foundation : Massive concrete foundation Foundation Depth : 0.5 meters Marker Description : Braced steel mount attached with bolts : through the 17" wall with brace plates on the : interior wall. Date Installed : 2007-08-15T00:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : No Distance/activity : Additional Information : This is a replacement site for site NCDK. The : new building was constructed in 1981 with 17" : walls. : : NCDU CORS was decommissioned 2024-04-09 : The antenna mount had to be replaced because : of corrosion from the harsh environment : Look for NCD4 in the future. 2. Site Location Information City or Town : Duck State or Province : North Carolina Country : United States Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : 1268582.926 Y coordinate (m) : -4995545.174 Z coordinate (m) : 3744466.460 Latitude (N is +) : +361054.04 Longitude (E is +) : -0754504.81 Elevation (m,ellips.) : -26.1 Additional Information : ARP IGS08 POSITION (EPOCH 2005.00) : Computed in Aug 2011 using data through gpswk : 1631. 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE 4700 Satellite System : GPS Serial Number : 0220151325 Firmware Version : 1.1-5 Elevation Cutoff Setting : 10 Date Installed : 2007-08-15 Date Removed : 2009-01-13 Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : Receiver upgrade. 3.2 Receiver Type : TRIMBLE NETR5 Satellite System : GPS+GLO Serial Number : 4828K57138 Firmware Version : 3.60 Elevation Cutoff Setting : 5 Date Installed : 2009-01-13 Date Removed : 2012-01-05 Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : (multiple lines) 3.3 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5130K77349 Firmware Version : 4.43 Elevation Cutoff Setting : 5 Date Installed : 2012-01-05 Date Removed : 2015-07-01T12:27Z Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : (multiple lines) 3.4 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5130K77349 Firmware Version : 5.01 Elevation Cutoff Setting : 5 deg Date Installed : 2015-07-01T12:27Z Date Removed : 2018-02-09T00:00Z Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : (multiple lines) 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5130K77349 Firmware Version : 5.10 Elevation Cutoff Setting : 5 deg Date Installed : 2018-02-09T00:00Z Date Removed : 2021-01-07T20:06Z Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : (multiple lines) 3.6 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL Serial Number : 6039R40019 Firmware Version : 5.44 Elevation Cutoff Setting : 5 deg Date Installed : 2021-01-07T20:06Z Date Removed : 2024-04-09 Temperature Stabiliz. : (none or tolerance in degrees c) Additional Information : new receiver : : decommissioned 2024-04-09 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+SBAS) Serial Number : (A20, but note the first A5 is used in SINEX) Firmware Version : (A11) Elevation Cutoff Setting : (deg) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type : TRM33429.20+GP NONE Serial Number : 0220226157 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR 400 Antenna Cable Length : 33.3 m Date Installed : 2007-08-15 Date Removed : 2009-01-13 Additional Information : Antenna replaced. 4.2 Antenna Type : TRM57971.00 NONE Serial Number : 30973107 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 244 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR 240 and 400 Antenna Cable Length : 18.6 m Date Installed : 2009-01-13 Date Removed : 2012-01-05 Additional Information : Corrected antenna alignment value. 4.3 Antenna Type : TRM57971.00 NONE Serial Number : 4811118176 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : -8 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR 240 and 400 Antenna Cable Length : 18.6 m Date Installed : 2012-01-05 Date Removed : 2012-02-13 Additional Information : (multiple lines) 4.4 Antenna Type : TRM57971.00 NONE Serial Number : 4811118176 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR 240 and 400 Antenna Cable Length : 18.6 m Date Installed : 2012-02-13 Date Removed : 2021-01-07T20:06Z Additional Information : Antenna rotated to true north. 4.5 Antenna Type : TRM115000.00 NONE Serial Number : 60393G0007 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : LMR 240 and 400 Antenna Cable Length : 18.6 m Date Installed : 2021-01-07T20:06Z Date Removed : 2024-04-09 Additional Information : new antenna : : decommissioned 2024-04-09 4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions) Serial Number : (A*, but note the first A5 is used in SINEX) Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.) Marker->ARP Up Ecc. (m) : (F8.4) Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : (deg; + is clockwise/east) Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions) Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 5. Surveyed Local Ties 5.x Tied Marker Name : Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : (A4) Tied Marker DOMES Number : (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2007-08-15/CCYY-MM-DD Notes : (multiple lines) 6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1.1 Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.1 Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.1 Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.x Temp. Sensor Model :2024-04-09 Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.1 Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.x Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.5.1 Other Instrumentation : (multiple lines) 8.5.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 Radio Interference : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.1.x Radio Interference : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.1 Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.x Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.1 Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : North Carolina Geodetic Survey Preferred Abbreviation : NCGS Mailing Address : 121 West Jones Street : Raleigh, NC 27603 Primary Contact Contact Name : Bart Alligood Telephone (primary) : 919-948-7834 Telephone (secondary) : 919-733-3836 Fax : E-mail : bart.alligood@ncdps.gov Secondary Contact Contact Name : Gary Thompson Telephone (primary) : 919-948-7844 Telephone (secondary) : 919-773-3836 Fax : E-mail : gary.thompson@ncdps.gov Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) Mailing Address : (multiple lines) Primary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 13. More Information Primary Data Center : https://geodesy.noaa.gov/corsdata/ Secondary Data Center : URL for More Information : https://geodesy.noaa.gov/CORS Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : (Y or URL) Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions https://files.igs.org/pub/station/general/antenna.gra