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

0.   Form

     Prepared by (full name)  : Oivind Ruud
     Date Prepared            : 2003-02-24
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : nssp_19990629.log
      Modified/Added Sections : 3.3, 4.2, 11, 13

1.  Site Identification of the GNSS Monument

     Site Name                : Yerevan (National Survey Seismic
     Four Character ID        : NSSP
     Monument Inscription     : none
     IERS DOMES Number        : 12312M001
     CDP Number               : none
     Monument Description     : (PILLAR/BRASS PLATE/STEEL MAST/etc)
       Height of the Monument : (m)
       Monument Foundation    : (STEEL RODS, CONCRETE BLOCK, ROOF, etc)
       Foundation Depth       : (m)
     Marker Description       : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc)
     Date Installed           : 1996-07-15
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : Balsaltic lava flow
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (1-10 cm/11-50 cm/51-200 cm/over 200 cm)
       Fault zones nearby     : (YES/NO/Name of the zone)
         Distance/activity    : (multiple lines)
     Additional Information   : (multiple lines)
                              : 5/8 " bolt set in a concrete
                              : pillar UNAVCO Leveling mount
                              : used.

2.   Site Location Information

     City or Town             : Yerevan
     State or Province        : Armenia
     Country                  : Republic of Armenia
     Tectonic Plate           : Anotolian Block
     Approximate Position (ITRF)
       X coordinate (m)       : 3478646.82
       Y coordinate (m)       : 3418805.76
       Z coordinate (m)       : 4097987.13
       Latitude (N is +)      : +401335.40
       Longitude (E is +)     : +0443011.16
       Elevation (m,ellips.)  : 1167
     Additional Information   : Alignment
                              : 100m from the NSSP facility.

3.  GNSS Receiver Information


3.1  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T111
     Firmware Version         : 3.2
     Elevation Cutoff Setting : 4
     Date Installed           : 1997-10-10
     Date Removed             : 1999-05-21
     Temperature Stabiliz.    : NONE
     Additional Information   :

3.2  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : T111
     Firmware Version         : 3.2.32.8
     Elevation Cutoff Setting : 4
     Date Installed           : 1999-05-21
     Date Removed             : 2003-02-07
     Temperature Stabiliz.    : NONE
     Additional Information   :

3.3  Receiver Type            : ASHTECH UZ-12
     Satellite System         : GPS
     Serial Number            : zr220013847
     Firmware Version         : CJ12
     Elevation Cutoff Setting : 0
     Date Installed           : 2003-02-07
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : NONE
     Additional Information   :

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             : AOAD/M_T        DOME
     Serial Number            : 232
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.07924
     Marker->ARP North Ecc(m) : 0.00000
     Marker->ARP East Ecc(m)  : 0.00000
     Alignment from True N    : 4 west of mag North
     Antenna Radome Type      : DOME
     Radome Serial Number     :
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 1997-10-10
     Date Removed             : 2003-02-07
     Additional Information   : Cable split with a grounded
                              : Huber-Shunner protector.  N-type
                              : connectors used.  UNAVCO
                              : leveling mount.
                              : Regal Plastics Chokering Raydome

4.2  Antenna Type             : ASH701945C_M    DOME
     Serial Number            : cr520003504
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.07924
     Marker->ARP North Ecc(m) : 0.00000
     Marker->ARP East Ecc(m)  : 0.00000
     Alignment from True N    : 4 west of mag North
     Antenna Radome Type      : DOME
     Radome Serial Number     :
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : 2003-02-07
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : Cable split with a grounded
                              : Huber-Shunner protector.  N-type
                              : connectors used.  UNAVCO
                              : leveling mount.
                              : Regal Plastics Chokering Raydome

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


5.1  Tied Marker Name         :
     Tied Marker Usage        : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number :
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 0
       dy (m)                 : 0
       dz (m)                 : 0
     Accuracy (mm)            :
     Survey method            : (GPS
CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
     Date Measured            : (CCYY-MM-DDThh:mmZ)
     Additional Information   :

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        : 1997-10-10/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  : none
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       Accuracy (% rel h)     :
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        :
       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  : none
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       Accuracy               :
       Height Diff to Ant     :
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        :
       Notes                  :

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     : none
       Manufacturer           :
       Serial Number          :
       Data Sampling Interval :
       Accuracy               :
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        :
       Notes                  :

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 : none
       Manufacturer           :
       Serial Number          :
       Distance to Antenna    :
       Height Diff to Ant     :
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        :
       Notes                  :

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  :

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                   : National Survey for Seismic
                              : Protection
     Preferred Abbreviation   : NSSP
     Mailing Address          : Davidashen
                              : Massiv IV
                              : Yerevan,
                              : Armenia 375054
     Primary Contact
       Contact Name           : Serguei Balassanian
       Telephone (primary)    : 374 1 286813
       Telephone (secondary)  :
       Fax                    : 374 1 366280
       E-mail                 : presidnt@nssp.r.am
     Secondary Contact
       Contact Name           : Ruben Stepanyan
       Telephone (primary)    : 374 1 286813
       Telephone (secondary)  :
       Fax                    : 374 1 366280
       E-mail                 : rubstep@yahoo.com,
                                rstep@nssp-gov.am
     Additional Information   : (multiple lines)

12.  Responsible Agency (if different from 11.)

     Agency                   : JPL
     Preferred Abbreviation   : JPL
     Mailing Address          : 4800 Oak Grove Drive
                              : Pasadena, CA
                              : USA   91109
     Primary Contact
       Contact Name           : David A. Stowers
       Telephone (primary)    : 818-354-7055
       Telephone (secondary)  : 818-354-2950
       Fax                    : 818-393-4965
       E-mail                 : dstowers@jpl.nasa.gov
     Secondary Contact
       Contact Name           : Network Engineer/UNAVCO
       Telephone (primary)    : 303-497-8000
       Telephone (secondary)  :
       Fax                    : 303-497-8028
       E-mail                 : ruud@unavco.ucar.edu,
                                kfeaux@unavco.ucar.edu
     Additional Information   : Oivind Ruud (x8030),
                                Karl Feaux (x8037)

13.  More Information

     Primary Data Center      : JPL (ODC-Operational Data Center)
     Secondary Data Center    : CDDIS (GDC-Global Data Center)
     URL for More Information :
       Hardcopy on File
       Site Map               : (Y or URL)
       Site Diagram           : (Y or URL)
       Horizon Mask           : (Y or URL)
       Monument Description   : (Y or URL)
       Site Pictures          : (Y or URL)
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions


ASH701945C_M
Dorne Margolin with chokerings
milled chokerings, watertight design
(replaces recalled SCIGN ASH700936E_C antenna)
                       +-------+
                     /     +     \                        <--  0.1280 L2
                    |      +      |                       <--  0.1100 L1
  +-----------------+-------------+------------------+    <--  0.1006 TCR
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
+-+--------------------------------------------------+-+  <--  0.0376
+-------------------+-------------+--------------------+  <--  0.0346 BCR
                    |             |
                    |             |
                    +------x------+                       <--  0.0000
BPA=3DARP

<--                      0.3890                      -->


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