GUAO Site Information Form
     International GPS Service for Geodynamics

0.   Form

     Prepared by (full name)  : Ali Zhang
     Date Prepared            : 18-NOV-2001
     Report Type              : NEW
     Prepared Using           : Notepad


1.   Site Identification of the GPS Monument

     Site Name                : GPS station,  
                                Urumqi Astronomical Observatory
     Four Character ID        : GUAO
     Monument Inscription     : reinforced concrete
     IERS DOMES Number        : 21612m003
     CDP Number               : 
     Date Installed           : 18-NOV-2001 00:00 UT
     Geologic Characteristic  : 
       Bedrock Type           : METAMORPHIC
       Bedrock Condition      : JOINTED
       Fracture Spacing       : 
       Notes                  : (multiple lines)
     Additional Information   : (multiple lines)


2.   Site Location Information

     City or Town             : URUMQI
     State or Province        : XINJIANG
     Country                  : CHINA
     Tectonic Plate           : EURASIA
     Approximate Position
       X coordinate (m)       :  228380.79 m
       Y coordinate (m)       : 4631962.42 m
       Z coordinate (m)       : 4367041.08 m
       Latitude (deg)         :   43.4711 N
       Longitude (deg)        :   87.1773 E
       Elevation (m)          : 2049.20 m 
     Additional Information   : (multiple lines)


3.   GPS Receiver Information

3.1  Receiver Type            : ASHTECH UZ-12
     Serial Number            : ZR20010402
     Firmware Version         : CJ00
     Date Installed           : 18-NOV-2001 00:00 UT
     Date Removed             : 
     Additional Information   : 


4.   GPS Antenna Information

4.1  Antenna Type             : ASH701945B_M
     Serial Number            : CR520010703
     Antenna Height (m)       : 0.080 m
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : 18-NOV-2001 00:00 UT
     Date Removed             : 
     Additional Information   : (multiple lines)


5.   Local Site Ties

5.x  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   : The local tie to Nanshan VLBI Mark is now not available.
                                We are planning to finish the measurement within 6 months.


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              : 
       Effective Dates        : 18-NOV-2001 00:00 UT
       Notes                  : 

7.   Collocation Information

7.1  Instrumentation Type     : VLBI
       Status                 : PERMANENT
       Effective Dates        : 1993
       Notes                  : 


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    :
       Manufacturer           : PAROSCIENTIFIC
       Data Frequency         : 5 sec
       Accuracy (% rel h)     : 2 %
       Effective Dates        : 18-NOV-2001
       Notes                  : Sensor elevated 2.5 metres above ground level.

8.2  Pressure Sensor Model    :
       Manufacturer           : PAROSCIENTIFIC
       Data Frequency         : 5 sec
       Accuracy (mbar)        : 0.1 hpa
       Height Diff to GPS (m) : 1 m below GPS antenna
       Effective Dates        : 18-NOV-2001
       Notes                  : (multiple lines)

8.3  Temperature Sensor Model :
       Manufacturer           : PAROSCIENTIFIC
       Data Frequency         : 5 sec
       Accuracy (deg C)       : 0.5 deg C
       Effective Dates        : 18-NOV-2001
       Notes                  : Sensor elevated 2.5 metres above ground level.

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          : Urumqi Astronomical Observatory 
                       National Astronomical Observatories
                       Chinese Academy of Sciences
     Mailing Address          : 40 Beijing South Rd.,Urumqi 830011,Xinjiang(CHINA)
     Primary Contact
       Contact Name           : Ali Zhang
       Telephone (primary)    : +86-991-3840230
       Telephone (secondary)  : +86-991-3835757
       Fax                    : +86-991-3838628
       E-mail                 : zhangal@ms.xjb.ac.cn
     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               : (Y)
       Site Diagram           : (Y)
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : (Y)
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions
      

                                   ---
     L2 Phase Center =>         /    +    \                     <---  0.1280 L2
     L1 Phase Center =>        |     +     |                    <---  0.1100 L1
              +----------------------------------------------+  <---  0.1006 TCR
              |                                              |   
              |                                              |    
              |                                              |    
              |                                              |
            +--------------------------------------------------+ <--  0.0376
            +------------------+-----------+-------------------+ <--  0.0346 BCR
                               |           |                      
                               |           |
              +------------------------------------------------+  <---  0.0000 ARP
                                    |
                                    |
                            	    |   Antenna Height  0.08M
                                    | 
                                    |
                                    |                           
              +-------| |-----------+-+ --------------| |-----+  top of concrete pier
                      | |          marker             | |         
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |      concrete pier of
                      | |                             | |      about 3.5 meter
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |
                      | |                             | |
          ------------| |------------+----------------| |-----
                               Bunker Terrace
                             

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