WSRA Site Information Form International GPS Service for Geodynamics 0. Form Prepared by (full name) : Hans van der Marel Date Prepared : 28-APR-2000 Report Type : UPDATE Prepared Using : 1. Site Identification of the GPS Monument Site Name : Westerbork Synthesis Radio Telescope Four Character ID : WSRA Monument Inscription : -- IERS DOMES Number : 13506M005 CDP Number : Date Installed : 23-MAY-1997 12:00 UT Geologic Characteristic : SAND Bedrock Type : SEDIMENTARY Bedrock Condition : Fracture Spacing : Notes : Antenna on top of 24 meter mast, founded on stable : sand layers. The vertical component is controled : by an invar wire construction. Additional Information : Two receivers are connected to the same antenna: : 1. WSRT is operating under responsibility of : the Institute for Earth-Oriented Space research : (DEOS) of the Delft University of Technology. : 2. WSRA is operating under responsibility of : the AGRS.NL exploitation organisation : Netherlands Triangulation Network No. RD 179811 : Netherlands Height System No. NAP 0A-2628 2. Site Location Information City or Town : Westerbork State or Province : Drente Country : The Netherlands Tectonic Plate : Eurasian Approximate Position X coordinate (m) : 3828739 Y coordinate (m) : 443305 Z coordinate (m) : 5064887 Latitude (deg) : 52.9146 N Longitude (deg) : 6.6045 E Elevation (m) : 86.0000 Additional Information : (multiple lines) 3. GPS Receiver Information 3.1 Receiver Type : ROGUE SNR-12 RM Serial Number : 223 Firmware Version : 3.2.32.1 Date Installed : 16-MAY-1997 00:00 UT Date Removed : 11-AUG-1999 08:30 UT Additional Information : On 01-JUN-1997 a second Turbo Rogue receiver : (WSRT, S/N 209) was deployed at Westerbork, : operating in parallel with this receiver. 3.2 Receiver Type : ROGUE SNR-12 RM Serial Number : 223 Firmware Version : 3.2.32.9 Date Installed : 11-AUG-1999 08:30 UT Date Removed : 01-SEP-1999 14:09 UT Additional Information : Firmware upgrade 3.3 Receiver Type : ROGUE SNR-12 RM Serial Number : 209 Firmware Version : 3.2.32.9 Date Installed : 01-SEP-1999 00:00 UT Date Removed : 05-JAN-2000 14:46 UT Additional Information : Receiver 223 reallocated to Eijsden to replace : malfunctioning receiver. Data from the IGS receiver : S/N 209 is fed into the AGRS.NL data stream WSRA. 3.4 Receiver Type : AOA SNR-12 ACT Serial Number : 225 Firmware Version : 3.2.32.9 Date Installed : 05-JAN-2000 14:46 UT Date Removed : 28-APR-2000 00:00 UT Additional Information : Upgrade to benchmark technology (same receiver : as used by IGS). 3.5 Receiver Type : TRIMBLE 4700 Serial Number : 0220196521 Firmware Version : 1.20 Date Installed : 28-APR-2000 00:00 UT Date Removed : Additional Information : IGS (WSRT) and AGRS.NL (WSRA) data streams : are again using different receivers. IGS : continues to use the benchmark receiver, : AGRS started observing with a TRIMBLE 4700. 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 DOME Serial Number : 273 Antenna Height (m) : 0.3795 Antenna Reference Point : ARP Degree Offset from North : 0 Antenna Radome Type : DOME (VANLOON DESIGN) Date Installed : 01-JUN-1997 12:00 UT Date Removed : 17-MAR-1998 09:14 UT : Conical fiber glass antenna radome (designed by : Danny Van Loon) is used on the AOAD/M_T antenna. : The antenna is placed on a 24 meter mast. The : vertical position of the antenna is stabilized : by an invar wire construction. 4.2 Antenna Type : AOAD/M_T DOME Serial Number : 273 Antenna Height (m) : 0.3935 Antenna Reference Point : ARP Degree Offset from North : 0 Antenna Radome Type : DOME (VANLOON DESIGN) Date Installed : 17-MAR-1998 15:09 UT Date Removed : Additional Information : Antenna heigth changed due to a refitting : of the invar wire construction. The height : is still not very stable. Also the antenna : height reported here is different from the : official value, which is reported as 0.3935 : (m). Because the official value became : available several weeks after the publication : of the provisional value of 0.3888 (m), we : decided to continue to use the provisional : value in the processing until the problem : is fully understood. 4.x Antenna Type : Serial Number : Antenna Height (m) : Antenna Reference Point : 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 5.1 Monument Name : Site Ref CDP Number : Site Ref Domes Number : Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : dy (m) : dz (m) : Accuracy (mm) : Date Measured : Additional Information : 6. Frequency Standard 6.1 Standard Type : H-MASER Frequency : Effective Dates : 01-JUN-1997 12:00 UT - 28-FEB-1998 19:17 UT Notes : Oscilloquartz Neuchatel Type LSRH H3 Stability 2E-14 / 1000 sec. 6.2 Standard Type : QUARTZ Frequency : Effective Dates : 28-FEB-1998 19:17 UT - 26-MAR-1998 08:25 UT Notes : Oscilloquartz Neuchatel Type LSRH H3 Stability 2E-14 / 1000 sec. 6.3 Standard Type : RUBIDIUM Frequency : Effective Dates : 26-MAR-1998 08:25 UT - 28-APR-2000 00:00 UT Notes : HP Rubidium standard, type 5065A, S/N 1736 A 0811 6.x Standard Type : H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM Frequency : Effective Dates : Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : Status : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : 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 : Delft University of Technology, Department of Geodesy, Mailing Address : Thijssweg 11 : Delft, The Netherlands : 2629 JA Primary Contact Contact Name : Hans van der Marel Telephone (primary) : (31) 15 278 4907 Telephone (secondary) : (31) 15 262 1844 Fax : (31) 15 278 3711 E-mail : H.vanderMarel@geo.tudelft.nl Secondary Contact Contact Name : Danny van Loon Telephone (primary) : (31) 15 2788137 Telephone (secondary) : (31) 570 672720 Fax : (31) 15 2783711 E-mail : vanloon@geo.tudelft.nl 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 : http://www.agrs.nl/station/westerbork Hardcopy on File Site Map : X Site Diagram : X Horizon Mask : X Monument Description : X Site Pictures : http://www.agrs.nl/station/westerbork/westerbork.jpg 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 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering A conic radome (Van Loon design) is placed on top of the Chokering. Revision history: 28 april 2000 - Hans van der Marel * started using Trimble 4700 (IGS bypass disabled) 4 september 1999 - Hans van der Marel * receiver 223 replace by 209 (IGS Receiver). 13 june 1999 - Hans van der Marel * Create separate 'sitelog' for WSRA (AGRS.NL receiver) from the WSRT sitelog * Added more information on the antenna height * Changed antenna type to new IGS standard * Changed primary/secondary contact CHANGES EFFECTIVE IN RINEX FILES STARTING JUNE 13th, 1999 (GPSWEEK/DAY 1014/0, DOY 164)