3SNA Site Information Form
     GPS/GLONASS Campaign IGEX98


0.   Form

     Prepared by (full name)  : Jacques Beser
     Date Prepared            : 26-Mar-1999
     Report Type              : REVISED
     Prepared Using           :


1.   Site Identification of the GPS/GLONASS Monument

     Site Name                : IRVINE
     Four Character ID        : 3SNA
     Monument Inscription     : NONE
     IERS DOMES Number        : 49918S001
     CDP Number               : (XXXX)
     Monument Description     : NONE
     Date Installed           : 1999-03-26T00:00Z
     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 cm)
    Additional Information    :  Our antenna location was determined in
                              relation to the Bommer Canyon PGGA Station
                                 ( IERS DOMES Number 40480M001) 


2.   Site Location Information

     City or Town             :  Irvine 
     State or Province        :  California
     Country                  :  USA
     Tectonic Plate           :  American
     Approximate Position
       X coordinate (m)       : -2482980.515
       Y coordinate (m)       : -4696608.468
       Z coordinate (m)       :  3517630.887
       Latitude (deg)         : 33.68730095N
       Longitude (deg)        : 117.86429867 W
       Elevation (m,ellips.)  : -16.761
     Additional Information   : Height is antenna phase center location


3.   Receiver Information

3.1  Receiver Type            : 3S Navigation R100-40T
     Satellite System         : GPS+GLONASS
     Serial Number            : RCVR D
     Firmware Version         : V 5.3
     Date Installed           : 1999-03-26T00:00Z
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


4.   Antenna Information

4.1  Antenna Type             : TSA-100
     Serial Number            : 00000
     Antenna Height (m)       : 0.0 
     Antenna Reference Point  : APC
     Marker->ARP Up Ecc. (m)  :   3.0460
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : 
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 1999-03-26T00:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Additional Information   : Site height is antenna phase center


5.   Local Site Ties

5.1  Monument Name            :
     Site Ref CDP Number      : (XXXX)
     Site Ref Domes Number    : 40480M001
     Differential Components from GPS/GLONASS Marker to Site Reference 
(ITRS)
       dx (m)                 : 2951.562 m
       dy (m)                 : -6502.630m
       dz (m)                 : -6332.419 m
     Accuracy (mm)            :  10 mm
     Date Measured            : 26-aug-1998
     Additional Information   : 


6.   Frequency Standard

6.1  Standard Type            : CESIUM
       Frequency              :
       Effective Dates        : 1999-03-26/CCYY-MM-DD 
       Notes                  : Very old/poor performance


7.   Collocation Information

7.1  Instrumentation Type     : (GPS/GLONASS/DORIS/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 Ant (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 Antenna (m): (m)
       Elev Diff to Ant (m)   : (m)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.5  Other Instrumentation    : (multiple lines)


9.   Local Ongoing Conditions Possibly Affecting Computed Position

9.1.x  Radio Interferences    : (TV/CELL PHONE ANTENNA/RADAR/etc)
       Observed Degradations  : (SN RATIO/DATA GAPS/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)

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/BUILDINGS/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                   : 3S Navigation
     Preferred Abbreviation   : 3SNA
     Mailing Address          : 4 Executive Circle, Suite 200
                                Irvine, CA 92614, USA
     Primary Contact
       Contact Name           : Jacques Beser
       Telephone (primary)    :  949-862-5900 ext 20
       Telephone (secondary)  :
       Fax                    :  949-862-5908
       E-mail                 :   jbeser@aol.com
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :  nav3s@aol.com
     Additional Information   : (multiple lines)


12.  Responsible Agency (if different from 9.)

     Agency                   : (multiple lines)
     Preferred Abbreviation   : (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)


13.  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

     (insert text graphic)