International GPS Service NPLD Site Information Form See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Jon Clarke Date Prepared : 2002-07-02 Report Type : UPDATE If Update: Previous Site Log : npld_20010911.log Modified/Added Sections : 1,2,3.1,4.1,6.2,7.1,7.2,9.2.1,11,13 1. Site Identification of the GNSS Monument Site Name : Teddington Four Character ID : NPLD Monument Inscription : NPLD IERS DOMES Number : 13234M003 CDP Number : (A4) Monument Description : STEEL BOLT Height of the Monument : (m) Monument Foundation : ROOF Foundation Depth : (m) Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc) Date Installed : 2000-08-15T12:00Z 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 Fault zones nearby : NO Distance/activity : (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 (ITRF) X coordinate (m) : 3985500.4143 Y coordinate (m) : -23625.4933 Z coordinate (m) : 4962941.6951 Latitude (N is +) : +512515.60 Longitude (E is +) : -0002022.56 Elevation (m,ellips.) : 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. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP0Z962 Firmware Version : 1I08 Elevation Cutoff Setting : 0 Date Installed : 1997-08-20T12:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : 2.0 Additional Information : Ashtech Z12 modified for time transfer. 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) 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 : AOAD/M_T NONE Serial Number : 340 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.07963 Marker->ARP North Ecc(m) : 0.0 Marker->ARP East Ecc(m) : 0.0 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : NONE Antenna Cable Type : Andrews phase-stabilised FSJ1-50A Antenna Cable Length : 30 Date Installed : 2000-08-15T12:00Z Date Removed : (CCYY-MM-DDThh:mmZ) 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 = : (122.15+-0.1)ns (measured, 15-AUG-2000) 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) : dy (m) : dz (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 : H-MASER Input Frequency : 5 MHz Effective Dates : (1997-08-20/1998-07-13) Notes : HM2, a Sigma Tau active H maser. : It is the source of UTC(NPL) 6.2 Standard Type : H-MASER Input Frequency : 5 MHz Effective Dates : 1998-07-13/CCYY-MM-DD 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 = +8433.7 ns : (15-AUG-2000 to 15-JAN-2001). : UTC(NPL)-NPLD_1PPS_in = +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 : Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : GLONASS Status : PERMANENT Effective Dates : 1998-10-21/2001-07-20 Notes : NPLC/NPLE IGEX station, 3SNAV R100-40T with : TSA-100 3S CR. 7.2 Instrumentation Type : TWSTFT Status : PERMANENT Effective Dates : 1997-08-20/CCYY-MM-DD Notes : Two-way satellite time and frequency : earth station, NPL1. 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 : 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 : Accuracy : (mbar) 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 : 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 : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) 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 : 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degredations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.1 Multipath Sources : METAL DOME Effective Dates : (2000-08-15/CCYY-MM-DD) Additional Information : Copper dome with 2m radius has centre ~10m : West of NPLD. 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.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.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : National Physical Laboratory Preferred Abbreviation : NPL Mailing Address : Queens Road, Teddington, TW11 0LW, UK Primary 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 Secondary Contact Contact Name : Mr Roman Hlavac Telephone (primary) : +44 (0) 20 8943 6452 Telephone (secondary) : +44 (0) 20 8943 6351 Fax : +44 (0) 20 8943 6529 E-mail : roman.hlavac@npl.co.uk 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 URL for More Information : http://www.npl.co.uk/npl/ctm/gnss.html Hardcopy on File Site Map : (Y or URL) 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 | | =| | +------x------+ <-- 0.000 ARP <-- 0.381 -->