VILL Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : C.Garcia
     Date Prepared            : 15-MAY-1997
     Report Type              : UPDATE
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Villafranca
     Four Character ID        : VILL
     Monument Inscription     : None
     IERS DOMES Number        : 13406M001
     CDP Number               : None
     Date Installed           : 12-NOV-1994 hh:mm 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   : (multiple lines)


2.   Site Location Information

     City or Town             : Villafranca
     State or Province        : Madrid
     Country                  : Spain
     Tectonic Plate           : Eurasian
     Approximate Position
       X coordinate (m)       : 4849833.874
       Y coordinate (m)       : -335049.255
       Z coordinate (m)       : 4116014.809
       Latitude (deg)         :  40.4436 N
       Longitude (deg)        :   3.9520 W
       Elevation (m)          : 647.49
     Additional Information   : At the ESA Villafranca Ground Station.


3.   GPS Receiver Information

3.1  Receiver Type            : ROGUE SNR-8100
     Serial Number            : 109
     Firmware Version         : 2.8
     Date Installed           : 12-NOV-1994 hh:mm UT
     Date Removed             : 03-JUL-1996 23:59 UT
     Additional Information   : (multiple lines)

3.2  Receiver Type            : ROGUE SNR-8100
     Serial Number            : 109
     Firmware Version         : 3.2.32.1
     Date Installed           : 04-JUL-1996 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

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             : DORNE MARGOLIN T
     Serial Number            : 200
     Antenna Height (m)       : 0.0437
     Antenna Reference Point  : ARP
     Degree Offset from North : 0
     Antenna Radome Type      :
     Date Installed           : 12-NOV-1994 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

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            : CESIUM
       Frequency              :
       Effective Dates        : 12-NOV-1994 - dd-MMM-yyyy
       Notes                  : (multiple lines)

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.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                   : ESA Villafranca Satellite Station
     Mailing Address          : ESA Villafranca Satellite Station
                                 Apartado P.O.Box 50727
                                 Madrid 28080
                                 Spain
     Primary Contact
       Contact Name           : At ESOC. See item 10.
       Telephone (primary)    : 00-34-1-8131100
       Telephone (secondary)  :
       Fax                    : 00-34-1-8131139
       E-mail                 :
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


10.  Responsible Agency (if different from 9.)

     Agency                   : ESA / ESOC
     Mailing Address          : Robert-Bosch-Strasse 5
                              : D-64293
                              : Darmstadt
                              : Germany
     Primary Contact
       Contact Name           : J.Dow
       Telephone (primary)    : 49-6151-902272
       Telephone (secondary)  :
       Fax                    : 49-6151-902271
       E-mail                 : jdow@esoc.esa.de
     Secondary Contact
       Contact Name           : C.Garcia
       Telephone (primary)    : 49-6151-902088
       Telephone (secondary)  :
       Fax                    : 49-6151-902271
       E-mail                 : cagarcia@esoc.esa.de
     Additional Information   : (multiple lines)


11.  More Information

     URL for More Information : http://nng.esoc.esa.de/gps/villafranca.html
     Hardcopy on File
       Site Map               : X
       Site Diagram           : X
       Horizon Mask           :
       Monument Description   : X
       Site Pictures          : X
     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