KOSG Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : Danny van Loon
     Date Prepared            : 29-APR-1996
     Report Type              : UPDATE
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Kootwijk Observatory for Satellite Geodesy
     Four Character ID        : KOSG
     Monument Inscription     : KOSG-25
     IERS DOMES Number        : 13504M003
     CDP Number               : (XXXX)
     Date Installed           : dd-JAN-1991 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   : The Kootwijk Observatory is operating under
                              : responsibility of the Faculty of Geodesy of
                              : the Delft University of Technology.


2.   Site Location Information

     City or Town             : Kootwijk (near Apeldoorn)
     State or Province        :
     Country                  : The Netherlands
     Tectonic Plate           : Eurasian
     Approximate Position
       X coordinate (m)       : 3899225.2730
       Y coordinate (m)       :  396731.8010
       Z coordinate (m)       : 5015078.3320
       Latitude (deg)         : 52.1784
       Longitude (deg)        :  5.8096
       Elevation (m)          : 97.8617
     Additional Information   : (multiple lines)


3.   GPS Receiver Information

3.1  Receiver Type            : ROGUE SNR-8
     Serial Number            : R117
     Firmware Version         : Meenix 7.8
     Date Installed           : 13-JUN-1994 - 08/23/1994 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.2  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T175
     Firmware Version         : Version 2.8
     Date Installed           : 24-AUG-1994 - 11/22/94 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.3  Receiver Type            : ROGUE SNR-8
     Serial Number            : R117
     Firmware Version         : Meenix 7.8
     Date Installed           : 23-NOV-1994 - 01/25/1996 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.4  Receiver Type            : ROGUE SNR-12 RM
     Serial Number            : T209
     Firmware Version         : Version 3.2.32.1
     Date Installed           : 26-JAN-1996 - 04/23/1996 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.5  Receiver Type            : ROGUE SNR-12 RM
     Serial Number            : T229
     Firmware Version         : Version 3.2.32.1
     Date Installed           : 24-APR-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 B
     Serial Number            : S/N 119
     Antenna Height (m)       : 0.105
     Antenna Reference Point  : BCR/ARP
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : 01-JAN-1991 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : Model C146-6-1

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

5.1  Monument Name            : KOSG-23(SLR)
     Site Ref CDP Number      : 8833
     Site Ref Domes Number    : 13504M002
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : 12.458
       dy (m)                 : 37.501
       dz (m)                 : -23.025
     Accuracy (mm)            : 3
     Date Measured            : 14-APR-1993 hh:mm UT
     Additional Information   : KOSG-23  Mobile SLR Reference Point

5.2  Monument Name            : KOSG-28
     Site Ref CDP Number      : 8833
     Site Ref Domes Number    : 13504M002
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : -17.115
       dy (m)                 : 32.379
       dz (m)                 : 1.144
     Accuracy (mm)            : 3
     Date Measured            : 14-APR-1993 hh:mm UT
     Additional Information   : KOSG-28  Mobile GPS Reference Point, also
                              : EUREF reference marker


6.   Frequency Standard

6.1  Standard Type            : RUBIDIUM
       Frequency              :
       Effective Dates        : 01-JAN-1991 - 26-JAN-1996
       Notes                  : 5065A Rubidium Vapor Frequency Standard

6.2  Standard Type            : QUARTZ
       Frequency              :
       Effective Dates        : 27-JAN-1996 - 14-FEB-1996
       Notes                  : Frequency Crystal Oscillator

6.3  Standard Type            : RUBIDIUM
       Frequency              :
       Effective Dates        : 14-FEB-1996
       Notes                  : 5065A Rubidium Vapor Frequency Standard

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     : SLR
       Status                 : MOBILE
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : Absolute gravimeter  (M)
                              : Relative gravimeters (M)
                              : Seismometer (P)


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 (DUT/KOSG)
     Mailing Address          : Thijssweg 11
                              : Delft, The Netherlands
                              : 2629 JA
     Primary Contact
       Contact Name           : Danny van Loon
       Telephone (primary)    : (31) 15 2788137
       Telephone (secondary)  :
       Fax                    : (31) 15 2783711
       E-mail                 : vanloon@geo.tudelft.nl
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     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               : X
       Site Diagram           : X
       Horizon Mask           : X
       Monument Description   : X
       Site Pictures          : X
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions


ROGUE:  DORNE MARGOLIN B  (Allen Osborne Design)
    S/N 119 according to general figures.

                         -----
                     /     +     \                        <-- 0.096  L2
                    |      +      |                       <-- 0.078  L1
  +-----------------+-------------+------------------+    <-- 0.070  TCR
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
  +-----------------+------x------+------------------+    <-- 0.000  ARP
                    |             |
                    +-------------+                       <-- -0.011
                          ||  ||

  <--                    0.351                     -->


    ROGUE: DORNE MARGOLIN B  (Allen Osborne Design)
    S/N 119 calibrated by DUT/KOSG in cooperation with ESA/ESTEC.

                         -----
                     /     +     \                        <-- 0.101  L2
                    |      +      |                       <-- 0.077  L1
  +--------------------------------------------------+    <-- 0.070  TCR
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
  +------------------------x-------------------------+    <-- 0.000  ARP
                    |             |
                    +-------------+                       <-- -0.010
                          ||  ||

  <--                    0.351                     -->


   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TCR: Top of Chokering                  BCR: Bottom of Chokering