TWTF Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : Hsin-Min Peng
     Date Prepared            : 28-Aug-2001
     Report Type              : NEW
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Taoyuan
                              : National Standard Time and Frequency 
                                Laboratory,
                              : Telecommunication Laboratories, Chunghwa 
                                Telecom Co. Ltd.
     Four Character ID        : TWTF
     Monument Inscription     : no monument, ARP
     IERS DOMES Number        : 23603S002
     CDP Number               :
     Date Installed           :
     Geologic Characteristic  :
       Bedrock Type           :
       Bedrock Condition      :
       Fracture Spacing       :
       Notes                  :
     Additional Information   :


2.   Site Location Information

     City or Town             : Taoyuan
     State or Province        : Taiwan
     Country                  : Republic of China
     Tectonic Plate           : Eurasia plate
     Approximate Position
       X coordinate (m)       : -2994425.04
       Y coordinate (m)       : 4951312.24
       Z coordinate (m)       : 2674498.60
       Latitude (deg)         :  24.9536 N
       Longitude (deg)        : 121.1645 E
       Elevation (m)          : 203.122
     Additional Information   : (multiple lines)


3.   GPS Receiver Information

3.1  Receiver Type            : ASHTECH Z-XII3T
     Serial Number            : RT920012202
     Firmware Version         : Z-XII3
     Date Installed           : 01-Aug-2001
     Date Removed             :
     Additional Information   :

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             : ASH701945C_M    SCIS
     Serial Number            : CR620012101
     Antenna Height (m)       : 0.00 m
     Antenna Reference Point  : ARP
     Degree Offset from North : oriented North but not measured 
     Antenna Radome Type      :
     Date Installed           : 01-AUG-2001
     Date Removed             :
     Additional Information   :

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              : 10 MHz
       Effective Dates        : 24-APR-2000
       Notes                  :

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    : Capacitance probe
       Manufacturer           : Paroscientific, Inc.
       Data Frequency         : 5 second
       Accuracy (% rel h)     : < 2% RH (full scale)
       Effective Dates        : 01-Aug-2001
       Notes                  :

8.2  Pressure Sensor Model    : Digiquartz barometric transducer
       Manufacturer           : Paroscientific, Inc.
       Data Frequency         : 5 second
       Accuracy (mbar)        : < 0.08 hPa
       Height Diff to GPS (m) : 1 m
       Effective Dates        : 01-Aug-2001
       Notes                  :

8.3  Temperature Sensor Model : Resistance temperature device
       Manufacturer           : Paroscientific, Inc.
       Data Frequency         : 5 second
       Accuracy (deg C)       : < 0.5 deg C
       Effective Dates        : 01-Aug-2001
       Notes                  :

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                   : National Standard Time and Frequency 
                                Laboratory,
                              : Telecommunication Laboratories, Chunghwa 
                                Telecom Co. Ltd.
     Mailing Address          : 12, Lane 551, Min-Tsu Road Sec. 5, 
                                Yang-Mei, Taoyuan Taiwan 326, R.O.C.
     Primary Contact
       Contact Name           : Hsin-Min Peng
       Telephone (primary)    : 886 3 424-5174
       Telephone (secondary)  :
       Fax                    : 886 3 424-5178
       E-mail                 : hmpeng@cht.com.tw
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   :


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               :
       Site Diagram           :
       Horizon Mask           :
       Monument Description   :
       Site Pictures          :
     Additional Information   :
     Antenna Graphics with Dimensions


Ashtech: DORNE MARGOLIN ASH

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                     /     +     \                        <--  0.128  L2
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  +--------------------------------------------------+    <--  0.102  
TCR
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+-+--------------------------------------------------+-+  <--  0.038
+-------------------+-------------+--------------------+  <--  0.035  
BCR
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                    +------x------+                       <--  0.000  
ARP

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