HALY 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) : David Maggert Date Prepared : 2011-08-26 Report Type : UPDATE If Update: Previous Site Log : haly_20040430.log Modified/Added Sections : 3.1, 3.2, 12, 13 1. Site Identification of the GNSS Monument Site Name : Halat Ammar Four Character ID : HALY Monument Inscription : HALY 26.03.02 (north leg of monument) IERS DOMES Number : 20102M001 CDP Number : Monument Description : SCIGN SHORT DRILL-BRACED STAINLESS STEEL Height of the Monument : 1.14 Monument Foundation : sandstone bedrock Foundation Depth : 1.5 Marker Description : SCIGN MOUNT Date Installed : 2002-03-26T00:00Z Geologic Characteristic : BEDROCK Bedrock Type : SEDIMENTARY Bedrock Condition : WEATHERED Fracture Spacing : 1-10 cm Fault zones nearby : Distance/activity : Additional Information : 2. Site Location Information City or Town : Halat Ammar State or Province : Country : Saudi Arabia Tectonic Plate : Arabian Approximate Position (ITRF) X coordinate (m) : 4505447.3492 Y coordinate (m) : 3285418.6172 Z coordinate (m) : 3087773.4463 Latitude (N is +) : +290819.9189 Longitude (E is +) : +0360559.6981 Elevation (m,ellips.) : 861.6765 Additional Information : The sites is located several kilometers from : the nearby town of Halat Ammar in the desert : atop a low-lying peak of highly weathered : sandstone. It is located within the KACST : astronomical observatory compound. The : compound is guarded and surrounded by a fence, : and a locked entrance. The primary contact, : Abdulla Arrajehi, will arrange for all the : necessary transportation to the site. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP020004002 Firmware Version : CD00-1D02 Elevation Cutoff Setting : 10 Date Installed : 2002-03-26T00:00Z Date Removed : 2010-04-06T12:21Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4642124328 Firmware Version : 1.1-3 Elevation Cutoff Setting : unknown Date Installed : 2010-04-06T12:21Z 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 : ASH701945C_M SCIT Serial Number : CR520004506 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 3 deg W Antenna Radome Type : SCIT Radome Serial Number : 00163 Antenna Cable Type : RG-214 Antenna Cable Length : 12 Date Installed : 2002-03-26T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : Mag. declination is 3 deg E. : Antenna oriented to mag. north. 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 : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : dy (m) : dz (m) : Accuracy (mm) : Survey method : 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) : (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 : 2002-03-26/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.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.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) 9.2.1 Multipath Sources : METAL TRAILER HOME, ASTRONOMY DOME Effective Dates : 2002-03-26/CCYY-MM-DD Additional Information : A metal trailer home or mobile office, : oriented in N-S direction lengthwise, : is located approx 15 meters from the monument : relative to its SE corner and in a WNW position : relative to the monument. : A metal astronomical observatory dome is located : east of the monument about 100m and about 10m : above upon a small hill. 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 : King Abdullah City for Science and Technology Preferred Abbreviation : KACST Mailing Address : Astronomy & Geophysics Research Institute : Building 17, Laboratory : Riyadh : Saudi Arabia Primary Contact Contact Name : Dr. Abdullah Arrajehi Telephone (primary) : 966-5-410-1998 Telephone (secondary) : Fax : E-mail : arrajehi@hotmail.com Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : Massachusetts Institute of Tech Preferred Abbreviation : MIT Mailing Address : ERL/MIT E34-406 : 42 Carleton St. : Cambridge, MA 02142-1324 Primary Contact Contact Name : Robert Reilinger Telephone (primary) : (617) 253-7860 Telephone (secondary) : Fax : E-mail : reilinge@erl.mit.edu Secondary Contact Contact Name : UNAVCO Telephone (primary) : Telephone (secondary) : Fax : E-mail : archive@unavco.org Additional Information : 13. More Information Primary Data Center : UNAVCO Secondary Data Center : CDDIS (GDC-Global Data Center) URL for More Information : http://www.unavco.org Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : 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=ARP <-- 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