[IGSMAIL-4592]: KOU1 in operation with antenna height corrected

Carlos.Garcia-Martinez at esa.int Carlos.Garcia-Martinez at esa.int
Wed Sep 10 02:51:18 PDT 2003


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IGS Electronic Mail      10 Sep 01:51:47 PDT 2003      Message Number 4592
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Author: ESOC IGS-IGLOS TEAM

The Legacy receiver at Kourou (KOU1) has been repaired and is currently
providing data. We apologize for the long delay to repair it caused by a series
of failures. The back-up receiver was also faulty and the antenna had to be
repaired as well since after the receiver was fixed it was found that water was
sitting inside the antenna.

After the antenna was repaired and installed it was detected that the antenna
height contained in the station information form was wrong, being the correct
one 0.107 meters instead of 0.120. This afects the approximately six months of
data provided from the installation till the failure.

The updated station information form is included below.

Regards




     International GPS Service
     KOU1 Site Information Form
     See Instructions at:
       ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt

0.   Form

     Prepared by (full name)  : C.Garcia
     Date Prepared            : 2002-02-05
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : kou1_20020205.log
      Modified/Added Sections : (1,3.1,3.2,4.1)

1.  Site Identification of the GNSS Monument

     Site Name                : Kourou
     Four Character ID        : KOU1
     Monument Inscription     : None
     IERS DOMES Number        : 97301M211
     CDP Number               : None
     Monument Description     : PILLAR
       Height of the Monument : 1
       Monument Foundation    : CONCRETE BLOCK
       Foundation Depth       : 1
     Marker Description       : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
     Date Installed           : 2002-01-20
     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)
       Fault zones nearby     : (YES/NO/Name of the zone)
         Distance/activity    : (multiple lines)
     Additional Information   : (multiple lines)
                              : Mark at the center of a horizontal metal
                              : plate embedded on the concrete monument.

2.   Site Location Information

     City or Town             : Kourou
     State or Province        :
     Country                  : French Guyana
     Tectonic Plate           : South American
     Approximate Position (ITRF)
       X coordinate (m)       : 3839590.282
       Y coordinate (m)       : -5059568.325
       Z coordinate (m)       : 579957.894
       Latitude (N is +)      : +051507.88
       Longitude (E is +)     : -0524821.50
       Elevation (m,ellips.)  : -25.745
     Additional Information   : (multiple lines)

3.  GNSS Receiver Information


3.1  Receiver Type            : JPS LEGACY
     Satellite System         : GPS+GLONASS
     Serial Number            : LE2533
     Firmware Version         : 2.1
     Elevation Cutoff Setting : (deg)
     Date Installed           : 2002-01-20
     Date Removed             : 2003-09-01
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : (multiple lines)

3.2  Receiver Type            : JPS LEGACY
     Satellite System         : GPS+GLONASS
     Serial Number            : LE5519
     Firmware Version         : 2.2
     Elevation Cutoff Setting : 0
     Date Installed           : 2003-09-02
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : 2
     Additional Information   : (multiple lines)

3.x  Receiver Type            : (A20, from rcvr_ant.tab; see instructions)
     Satellite System         : (GPS/GLONASS/GPS+GLONASS)
     Serial Number            : (A5)
     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             : JPSREGANT_DD_E
     Serial Number            : RRA31
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.107
     Marker->ARP North Ecc(m) : 0
     Marker->ARP East Ecc(m)  : 0
     Alignment from True N    : 0
     Antenna Radome Type      : NONE
     Radome Serial Number     :
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 2002-01-20
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : The previous SIF (kou1_20020205.log)
                              : had a wrong antenna height of 0.120m.

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)                 :
       dy (m)                 :
       dz (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        : 2002-01-20/CCYY-MM-DD
       Notes                  : (multiple lines)

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  :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       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)

8.1.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  :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       Accuracy               : (mbar)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : CCYY-MM-DD/CCYY-MM-DD
       Notes                  : (multiple lines)

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)

8.3.1  Temp. Sensor Model     :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       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)

8.3.x  Temp. Sensor Model     :
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval : (sec)
       Accuracy               : (hPa)
       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)

8.4.1  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)

8.4.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)

8.5.1  Other Instrumentation  : (multiple lines)

8.5.x  Other Instrumentation  :

9.  Local Ongoing Conditions Possibly Affecting Computed Position


9.1.x  Radio Interferences    : (TV/CELL PHONE ANTENNA/RADAR/etc)
       Observed Degredations  : (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/BUILDLINGS/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                   : ESA Station Diane
     Preferred Abbreviation   : (A10)
     Mailing Address          : ESA Station Diane
                              : PO Box no.27
                              : 97311 Kourou Cedex
                              : French Guyana
     Primary Contact
       Contact Name           : At ESOC
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)

12.  Responsible Agency (if different from 11.)

     Agency                   : ESA / ESOC
     Preferred Abbreviation   : (A10)
     Mailing Address          : Robert-Bosch-Strasse 5
                              : D-64293
                              : Darmstadt
                              : Germany
     Primary Contact
       Contact Name           : J.Dow
       Telephone (primary)    : 49-6151-902272
       Telephone (secondary)  :
       Fax                    : 49-6151-902271
       E-mail                 : John.Dow at esa.int
     Secondary Contact
       Contact Name           : C.Garcia
       Telephone (primary)    : 49-6151-902088
       Telephone (secondary)  :
       Fax                    : 49-6151-902271
       E-mail                 : Carlos.Garcia-Martinez at esa.int
     Additional Information   : (multiple lines)

13.  More Information

     URL for More Information : http://nng.esoc.esa.de
       Hardcopy on File
       Site Map               : (Y or URL)
       Site Diagram           : (Y)
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : (Y)
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions



     (insert text graphic)


 JPSREGANT_DD_E


                +-------------------------+ <--------------Plastic Housing for
               /    -------------------    \               Antenna/Choke Ring
              /    /         +         \    \                <-- 0.1186 L2
   +---------+     |         +         |     +---------+     <-- 0.1131 L1
  | +-------------------------------------------------+ |    <-- 0.xxxx TCR
 /  |                                                 |  \
|   |                                                 |   |
|   |                                                 |   |
|   |                                                 |   |
 \+-----------------------------------------------------+/
 |+-----------------------------------------------------+|   <-- 0.xxxx BCR
  \______________  |                   |  ______________/
                 \ |                   | /
                  \+---------x---------+/                    <-- 0.0000 BPA=ARP

   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TCR: Top of Chokering                  BCR: Bottom of Chokering
   TGP: Top of Ground Plane               BGP: Bottom of Ground Plane
   TPA: Top of Preamplifier               BPA: Bottom of Preamplifier
   TOP: Top of Pole





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