VS0G Site Information Form
     GPS/GLONASS Campaign IGEX98


0.   Form

     Prepared by (full name)  : Mats Westberg
     Date Prepared            : 13-JUL-1999
     Report Type              : UPDATE
     Prepared Using           :


1.   Site Identification of the GPS/GLONASS Monument

     Site Name                : Visby
     Four Character ID        : VS0G
     Monument Inscription     : Visby SWEPOS 1993
     IERS DOMES Number        : 10423M001
     CDP Number               : 
     Monument Description     : PILLAR 
     Date Installed           : 01-AUG-1993 00:00 UT
     Geologic Characteristic  : BEDROCK 
       Bedrock Type           : SOLID
       Bedrock Condition      : FRESH
       Fracture Spacing       : over 200 cm
       Notes                  : 
     Additional Information   : Swedish permanent GPS network =
(SWEPOS)


2.   Site Location Information

     City or Town             : Visby
     State or Province        :
     Country                  : Sweden
     Tectonic Plate           : Eurasian
     Approximate Position
       X coordinate (m)       : 3246470.47461400
       Y coordinate (m)       : 1077900.36922659
       Z coordinate (m)       : 5365278.03021857
       Latitude (deg)         : __.____ N
       Longitude (deg)        : __.____ E
       Elevation (m)          : ___.__
     Additional Information   : ITRF92 coordinates (m)


3.   GPS Receiver Information

3.1  Receiver Type            : ASHTECH GG24C
     Serial Number            : GD31550
     Firmware Version         : GG00
     Date Installed           : 01-AUG-1998
     Date Removed             : 
     Additional Information   : (multiple lines)


4.   GPS Antenna Information

4.1  Antenna Type             : AOAD/M_T
     Serial Number            : 253
     Antenna Height (m)       : 0.0710
     Antenna Reference Point  : ARP3DBPA (Bottom of preamplifier)
     Degree Offset from North :
     Antenna Radome Type      : OSOD
     Date Installed           : 01-AUG-1993
     Date Removed             : (dd-MMM-yyyy hh:mm)
     Additional Information   : (multiple lines)

4.x  Antenna Type             :
     Serial Number            :
     Antenna Height (m)       : (m)
     Antenna Reference Point  : (ARP)
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : (dd-MMM-yyyy hh:mm)
     Date Removed             : (dd-MMM-yyyy hh:mm)
     Additional Information   : (multiple lines)


5.   Local Site Ties

5.1  Monument Name            :	Visby (VIS0)
     Site Ref CDP Number      : 09
     Site Ref Domes Number    : 10423M001
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : 0
       dy (m)                 : 0
       dz (m)                 : 0
     Accuracy (mm)            : 0
     Date Measured            :
     Additional Information   : Same pillar/antennas as VIS0 (EUREF)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              :
       Effective Dates        : 01-SEP-1998 - dd-MMM-yyyy
       Notes                  : (multiple lines)



7.   Collocation Information

7.1  Instrumentation Type     : GPS
       Status                 : PERMANENT
       Effective Dates        : 01-AUG-1993 -
       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

  a) Agency                   : National Land Survey 
(Lantmaeteriverket)
     Mailing Address          : S-80182 Gaevle
                              : Sweden
     Primary Contact
       Contact Name           : SWEPOS Operational Center
       Telephone (primary)    : +46 26 633753
       Telephone (secondary)  :
       Fax                    : +46 26 654275
       E-mail                 : swepos@lm.se
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


10.  Responsible Agency (if different from 9.)

     Agency                   :
     Mailing Address          :
     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                       -->

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

12.  Local Events Possibly Affecting Computed Position

12.x  Date                    : (dd-MMM-yyyy hh:mm UT)
      Event                   : (multiple lines)