NPLD Site Information Form International GPS Service for Geodynamics 0. Form Prepared by (full name) : Jon Clarke Date Prepared : 12-MAR-2001 Report Type : UPDATE Prepared Using : Programmer's File Editor 1. Site Identification of the GPS Monument Site Name : Teddington Four Character ID : NPLD Monument Inscription : NPLD IERS DOMES Number : 13234M003 CDP Number : (XXXX) Date Installed : 15-AUG-2000 12:00 UT Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/10-50 cm/50-200 cm/over 200 cm) Notes : (multiple lines) Additional Information : centre of top of bolt through steel railing, : NE corner of liftshaft roof, Building 2. : Note that the same receiver was previously used for different monuments as listed here - 20-AUG-1997 - 07-SEP-1998, used unlabelled monument. 07-SEP-1998 - 15-AUG-2000, moved to monument NPLB 13234M002. 15-AUG-2000 - present, moved to monument NPLD 13234M003. 2. Site Location Information City or Town : Teddington State or Province : Greater London Country : United Kingdom Tectonic Plate : Eurasian Approximate Position X coordinate (m) : 3985500.4143 Y coordinate (m) : -23625.4933 Z coordinate (m) : 4962941.6951 Latitude (deg) : 51.4210 N Longitude (deg) : 0.3396 W Elevation (m) : 72.7185 Additional Information : This location estimate is from Gipsy on NPLD3400.00O. : The antenna offset has been added. : Previous NPLB 13234M002 monument position : 3985502.5969, -23625.5546, 4962941.9106 3. GPS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Serial Number : LP0Z962 Firmware Version : 1I08 Date Installed : 20-AUG-1997 12:00 UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Ashtech Z12 modified for time transfer. 3.x Receiver Type : Serial Number : Firmware Version : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 4. GPS Antenna Information 4.1 Antenna Type : AOAD/M_T NONE Serial Number : 340 Antenna Height (m) : 0.07963 Antenna Reference Point : BPA Degree Offset from North : 0 Antenna Radome Type : NONE Date Installed : 15-AUG-2000 12:00 UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Moved from monument NPLB to NPLD, for better mechanical stability. : A levelling mount is used with a 79.63mm tall spike above the : monument point. : Antenna cable is 30m of phase-stabilised Andrews FSJ1-50A, : delay 3D (122.15+-0.1)ns (measured, 15-AUG-2000) 4.x Antenna Type : Serial Number : Antenna Height (m) : (m) Antenna Reference Point : (ARP/BCR/BPA) Degree Offset from North : Antenna Radome Type : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 5. Local Site Ties 5.x Monument Name : Site Ref CDP Number : (XXXX) Site Ref Domes Number : (XXXXXXXXX) Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Date Measured : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : H-MASER Frequency : 5 MHz Effective Dates : 20-AUG-1997 - 13-JUL-1998 Notes : HM2, a Sigma Tau active H maser. : It is the source of UTC(NPL) 6.2 Standard Type : H-MASER Frequency : 5 MHz Effective Dates : 13-JUL-1998 (- dd-MMM-yyyy) Notes : HM1, a Sigma Tau active H maser. : It is the source of UTC(NPL). : HM2 replaced by HM1 for UTC(NPL) following : malfunction on 11-JUL-1998. : 1PPS from port C2 of distr. amp. id 182, : UTC(NPL)-NPLD_1PPS_in 3D +8433.7 ns (15-AUG-2000 to 15-JAN-2001). : UTC(NPL)-NPLD_1PPS_in 3D +8426.4 ns (15-JAN-2001 onwards). : 5MHz from port 6 of distr. amp. id 184, : then quadrupler up to 20MHz. 6.x Standard Type : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM) Frequency : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : GLONASS Status : PERMANENT Effective Dates : 21-Oct-1998 (- dd-MMM-yyyy) Notes : NPLC IGEX station, 3SNAV R100-40T with TSA-100 3S CR. 7.2 Instrumentation Type : TWSTFT Status : PERMANENT Effective Dates : 20-AUG-1997 (- dd-MMM-yyyy) Notes : Two-way satellite time and frequency transfer earth station, NPL1. 7.x Instrumentation Type : (DORIS/GLONASS/PRARE/SLR/VLBI) Status : (PERMANENT/MOBILE) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1 Humidity Sensor Model : Manufacturer : Data Frequency : Accuracy (% rel h) : (% rel h) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.2 Pressure Sensor Model : Manufacturer : Data Frequency : Accuracy (mbar) : (mbar) Height Diff to GPS (m) : (m) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.3 Temperature Sensor Model : Manufacturer : Data Frequency : Accuracy (deg C) : (deg C) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.4 Water Vapor Radiometer : Manufacturer : Distance to GPS (m) : (m) Elev Diff to GPS (m) : (m) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.5 Other Instrumentation : (multiple lines) 9. On-Site, Point of Contact Agency Information Agency : National Physical Laboratory Mailing Address : NPL, Queens Road, Teddington, Middlesex, TW11 0LW, UK. Primary Contact Contact Name : Mr Jon Clarke Telephone (primary) : +44 (0) 20 8943 6548 Telephone (secondary) : +44 (0) 20 8943 6351 Fax : +44 (0) 20 8943 6529 E-mail : jon.clarke@npl.co.uk Secondary Contact Contact Name : Dr John Davis Telephone (primary) : +44 (0) 20 8943 7137 Telephone (secondary) : +44 (0) 20 8943 6351 Fax : +44 (0) 20 8943 6529 E-mail : john.davis@npl.co.uk Additional Information : (multiple lines) 10. Responsible Agency (if different from 9.) Agency : (multiple lines) 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) 11. More Information URL for More Information : Hardcopy on File Site Map : (Y) Site Diagram : (Y) Horizon Mask : (Y) Monument Description : (Y) Site Pictures : (Y) Additional Information : (multiple lines) Antenna Graphics with Dimensions TurboRogue: DORNE MARGOLIN T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | 3D| | +------x------+ <-- 0.000 ARP <-- 0.381 -->