SBOK Site Information Form (site log)
     International GNSS Service
     See Instructions at:
       ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt

0.   Form

     Prepared by (full name)  : Stephan Koch
     Date Prepared            : 2015-09-09
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : sbok_20110525.log
      Modified/Added Sections : 3.1, 3.2,11, 13


1.   Site Identification of the GNSS Monument

     Site Name                : SPRINGBOK
     Four Character ID        : SBOK
     Monument Inscription     : NONE
     IERS DOMES Number        : 30320M001
     CDP Number               : 
     Monument Description     : CONCRETE PILLAR
       Height of the Monument : 2.4 m
       Monument Foundation    : 
       Foundation Depth       : 0.5 m
     Marker Description       : BOTTOM OF ANTENNA MOUNT
     Date Installed           : 2000-02-08T00:00Z
     Geologic Characteristic  : BEDROCK/GRAVEL
       Bedrock Type           : 
       Bedrock Condition      : 
       Fracture Spacing       : 
       Fault zones nearby     : 
         Distance/activity    : 
     Additional Information   : 


2.   Site Location Information

     City or Town             : SPRINGBOK
     State or Province        : NORTHERN CAPE
     Country                  : South Africa
     Tectonic Plate           : AFRICAN
     Approximate Position (ITRF)
       X coordinate (m)       : 5279492.0167
       Y coordinate (m)       : 1703114.2749
       Z coordinate (m)       : -3139092.9922
       Latitude (N is +)      : -294009.56
       Longitude (E is +)     : +0175245.15
       Elevation (m,ellips.)  : 1043.1
     Additional Information   : ITRF 2005 (2008-01-09 12:00:00)


3.   GNSS Receiver Information

3.1  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4605204676
     Firmware Version         : Nav  1.20   Boot  1.16
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2006-10-15T00:00Z
     Date Removed             : 2014-07-07T00:00Z
     Temperature Stabiliz.    : NONE
     Additional Information   : 

3.2  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4605204652
     Firmware Version         : Nav 1.2 / Boot 1.16
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2014-07-08T00:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Temperature Stabiliz.    : 
     Additional Information   : 

3.x  Receiver Type            : (A20, from rcvr_ant.tab; see instructions)
     Satellite System         : (GPS+GLO+GAL+BDS+QZSS+SBAS)
     Serial Number            : (A20, but note the first A5 is used in SINEX)
     Firmware Version         : (A11)
     Elevation Cutoff Setting : (deg)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : (multiple lines)


4.   GNSS Antenna Information

4.1  Antenna Type             : ASH701941.B     SCIS
     Serial Number            : CRL1999100113
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0
     Marker->ARP North Ecc(m) : 0.0
     Marker->ARP East Ecc(m)  : 0.0
     Alignment from True N    : 0 deg
     Antenna Radome Type      : SCIS
     Radome Serial Number     : 
     Antenna Cable Type       : Suhner RG 214 Hiflex
     Antenna Cable Length     : 45 m
     Date Installed           : 2000-02-29T00:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Additional Information   : 

4.x  Antenna Type             : (A20, from rcvr_ant.tab; see instructions)
     Serial Number            : (A*, but note the first A5 is used in SINEX)
     Antenna Reference Point  : (BPA/BCR/XXX from "antenna.gra"; see instr.)
     Marker->ARP Up Ecc. (m)  : (F8.4)
     Marker->ARP North Ecc(m) : (F8.4)
     Marker->ARP East Ecc(m)  : (F8.4)
     Alignment from True N    : (deg; + is clockwise/east)
     Antenna Radome Type      : (A4 from rcvr_ant.tab; see instructions)
     Radome Serial Number     : 
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


5.   Surveyed Local Ties

5.x  Tied Marker Name         : 
     Tied Marker Usage        : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : (A9)
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : (m)
       dy (m)                 : (m)
       dz (m)                 : (m)
     Accuracy (mm)            : (mm)
     Survey method            : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
     Date Measured            : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Input Frequency        : 
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : 

6.x  Standard Type            : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
       Input Frequency        : (if external)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


7.   Collocation Information

7.x  Instrumentation Type     : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1.1  Humidity Sensor Model  : HPM 35A
       Manufacturer           : VAISALA
       Serial Number          : 
       Data Sampling Interval : 60 sec
       Accuracy (% rel h)     : APPROX. 3
       Aspiration             : NATURAL
       Height Diff to Ant     : 
       Calibration date       : 1998
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : 

8.1.x  Humidity Sensor Model  : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy (% rel h)     : (% rel h)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.2.1  Pressure Sensor Model  : PTB 101B
       Manufacturer           : VAISALA
       Serial Number          : A4510022
       Data Sampling Interval : 60 sec
       Accuracy               : 
       Height Diff to Ant     : 
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 2008-07-01/CCYY-MM-DD
       Notes                  : THE PREVIOUS ONE WORKED FOR APPROX. 20 YEARS

8.2.x  Pressure Sensor Model  : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy               : (hPa)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.3.x  Temp. Sensor Model     : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy               : (deg C)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.4.x  Water Vapor Radiometer : 
       Manufacturer           : 
       Serial Number          : 
       Distance to Antenna    : (m)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.5.x  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                   : CHIEF DIR: NATIONAL GEOSPATIAL INFORMATION
     Preferred Abbreviation   : NGI
     Mailing Address          : PRIVATE BAG X10,Mowbray,7705,SOUTH AFRICA
     Primary Contact
       Contact Name           : STEPHAN KOCH
       Telephone (primary)    : +27 21 658 4362
       Telephone (secondary)  : 082 577 5663
       Fax                    : +27 21 658 4357
       E-mail                 : stephan.koch@drdlr.gov.za
     Secondary Contact
       Contact Name           : TRIGNET
       Telephone (primary)    : +27 21 658 4363
       Telephone (secondary)  : 
       Fax                    : +27 21 658 4357
       E-mail                 : trignet@drdlr.gov.za
     Additional Information   : 


12.  Responsible Agency (if different from 11.)

     Agency                   : NONE
     Preferred Abbreviation   : 
     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   : 

13.  More Information

     Primary Data Center      : CDDIS
     Secondary Data Center    : ftp.afrefdata.org
     URL for More Information : www.trignet.co.za
     Hardcopy on File
       Site Map               : URL
       Site Diagram           : NONE
       Horizon Mask           : 
       Monument Description   : CONCRETE BEACON BUILT ON ROCK/GRAVEL
       Site Pictures          : NONE
     Additional Information   : 
     Antenna Graphics with Dimensions

     (insert text graphic from file antenna.gra)

ASH701941.B
                        +---------+
                       /     +     \                        
                      |      +      |                       
    +-----------------+-------------+------------------+    <--  0.1008 TCR
    |                                                  |
    |                                                  |
    |                                                  |
    |                                                  |
  +-+--------------------------------------------------+-+  <--  0.0378
  +-------------------+-------------+--------------------+  <--  0.0348 BCR
                      |             |
                      |             |
                      +------x------+                       <--  0.0000 BPA=ARP

  <--                      0.3794                      -->