GODZ Site Information Form (site log) International GPS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Tatevik Shakhbandaryan Date Prepared : 2011-03-03 Report Type : UPDATE If Update: Previous Site Log : godz_20091001.log Modified/Added Sections : 0,6.2,6.x 1. Site Identification of the GNSS Monument Site Name : GGAO Four Character ID : GODZ Monument Inscription : JPL 4006 IERS DOMES Number : 40451M123 CDP Number : (none) Monument Description : Concrete Pillar with imbedded plate Height of the Monument : 0.4 m above ground Monument Foundation : Reinforced Concrete, 0.76 m diameter Foundation Depth : 3 meter Marker Description : SS Plate, 0.457 m dia., with 1 mm center hole Date Installed : 1993-04-02 Geologic Characteristic : Sand and Gravel Bedrock Type : Sedimentary Bedrock Condition : unknown Fracture Spacing : unknown Fault zones nearby : unknown Distance/activity : Additional Information : The marker plate is engraved "GODDARD GORF : (EAST) FLINN GPS STATION MARK JPL 4006 1992" 2. Site Location Information City or Town : Greenbelt State or Province : Maryland Country : USA Tectonic Plate : NOAM Approximate Position (ITRF2000) X coordinate (m) : +1130773.867 Y coordinate (m) : -4831253.583 Z coordinate (m) : +3994200.409 Latitude (N is +) : +390118.22 Longitude (E is +) : -0764936.58 Elevation (m,ellips.) : 14.509 m Additional Information : Station is located at Goddard Geophysical and Astronomic Observatory (GGAO) 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z18 Satellite System : GPS+GLONASS Serial Number : 199909123 Firmware Version : 6.4 Elevation Cutoff Setting : 0.0 Date Installed : 1999-04-22T15:50Z Date Removed : 2001-01-23T17:00Z Temperature Stabiliz. : none Additional Information : 3.2 Receiver Type : ASHTECH Z18 Satellite System : GPS+GLONASS Serial Number : 199909123 Firmware Version : 6.5 Elevation Cutoff Setting : 0.0 Date Installed : 2001-01-23T17:00Z Date Removed : 2008-06-26T09:48Z Temperature Stabiliz. : none Additional Information : 3.3 Receiver Type : JPS EGGDT Satellite System : GPS+GLONASS Serial Number : LT2078 Firmware Version : 2.7.0 Elevation Cutoff Setting : 0.0 Date Installed : 2008-06-27T14:54Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : none Additional Information : 4. GNSS Antenna Information 4.1 Antenna Type : AOAD/M_T JPLA Serial Number : 129 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0614 Marker->ARP North Ecc(m) : 0.000 Marker->ARP East Ecc(m) : 0.000 Alignment from True N : 0 degrees/no offset Antenna Radome Type : JPLA Radome Serial Number : none Antenna Cable Type : Times RG-214/u Antenna Cable Length : (m) Date Installed : 1993-04-17 Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : none 5. Surveyed Local Ties 5.1 Tied Marker Name : CDP Station 7105 Tied Marker Usage : SLR Tied Marker CDP Number : 7105 Tied Marker DOMES Number : 40451M105 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -54.231 dy (m) : -97.007 dz (m) : -93.864 Accuracy (mm) : 2 mm Survey method : conventional optical/electronic Date Measured : 2001-06-01 Additional Information : Local survey by HTSI. Contact Jim Long at : jim.long@honeywell-tsi.com for more information : Marker is occupied by SLR system MOBLAS 7 : Exact date in June 2001 unknown 5.2 Tied Marker Name : SGP 7108 Tied Marker Usage : VLBI Tied Marker CDP Number : 7108 Tied Marker DOMES Number : 40451M125 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : +20.895 dy (m) : +19.754 dz (m) : +16.646 Accuracy (mm) : 2 mm Survey method : conventional optical/electronic Date Measured : 1998-12-01 Additional Information : Local survey by HTSI. Contact Jim Long at : jim.long@honeywell-tsi.com for more information : Marker is occupied by mobile VLBI system MV-3 : Exact date in December 1998 unknown 6. Frequency Standard 6.1 Standard Type : H-MASER Input Frequency : 5 MHz Effective Dates : 1999-04-22 Notes : NR-Series 6.2 Standard Type : H-MASER Input Frequency : 5 MHz Effective Dates : 2011-03-02T18:10Z/CCYY-MM-DD Notes : a Sigma Tau Maser : 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 7.1 Instrumentation Type : SLR Status : Mobile Effective Dates : 1981-03-01 Notes : NASA SLR MOBLAS 7 , ILRS Station GODL 7.2 Instrumentation Type : VLBI Status : Mobile Effective Dates : 1993-01-01 Notes : NASA Mobile VLBI system MV-3 : Exact date in 1993 unknown 7.3 Instrumentation Type : DORIS Status : Permanent Effective Dates : 2000-05-01 Notes : IDS Station GREB : Exact date in May 2000 unknown 8. Meteorological Instrumentation 8.1.1 Humidity Sensor Model : MET-3 Manufacturer : Paroscientific Serial Number : 70726 Data Sampling Interval : programmable Accuracy (% rel h) : =/- 2% Aspiration : NATURAL Height Diff to Ant : +4.5m Calibration date : 2001-03-01 Effective Dates : 2002-05-02 Notes : 8.2.1 Pressure Sensor Model : MET-3 Manufacturer : Paroscientific Serial Number : 70726 Data Sampling Interval : programmable Accuracy : <0.1hPa (RMS) Height Diff to Ant : +4.5m Calibration date : 2001-03-01 Effective Dates : 2002-05-02 Notes : 8.3.1 Temp. Sensor Model : MET-3 Manufacturer : Paroscientific Serial Number : 70726 Data Sampling Interval : Accuracy : (deg C) Aspiration : NATURAL Height Diff to Ant : +4.5m Calibration date : 2001-03-01 Effective Dates : 2002-05-02 Notes : (multiple lines) 8.4.1 Water Vapor Radiometer : none 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 : Wind Sensor Manufacturer : Vaisala / Handar Serial Number : 234 Data Sampling Interval : programmable Height Diff to Ant : +4.5m Calibration date : 2001-3-01 (new) Effective Dates : 2002-5-02 / Notes : 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 Radio Interferences : None Observed Degradations : None Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : 9.2.1 Multipath Sources : VLBI ANTENNA Effective Dates : 1992-04-01 Additional Information : Exact date in April 1992 unknown 9.3.1 Signal Obstructions : None Effective Dates : Additional Information : 10. Local Episodic Effects Possibly Affecting Data Quality 10.1 Date : 2002-11-11 / 2003-1-17 Event : Large crane NE of Monument 10.2 Date : 2009-09-30/2009-09-30 Event : Radome removed/replaced for survey : (16:49-19:55UTC) 11. On-Site, Point of Contact Agency Information Agency : Honeywell Technology Solutions Inc. Preferred Abbreviation : HTSI Mailing Address : Goddard Corporate Park : 7515 Mission Drive : Lanham, MD 20706 Primary Contact Contact Name : Irv Diegel Telephone (primary) : 301-805-3959 Telephone Facility : 301-286-3877 / 301-286-0811 Fax : 301-805-3974 E-mail : Irv.Diegel@honeywell.com Secondary Contact Contact Name : Mark Evangelista Telephone (primary) : 301-805-3968 Telephone (secondary) : 301-286-3877 / 301-286-0811 Fax : 301-805-3974 E-mail : Mark.Evangelista@honeywell.com Additional Information : 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA USA Primary Contact Contact Name : Dave Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : Fax : 818-393-4965 E-mail : dstowers@jpl.nasa.gov Secondary Contact Contact Name : Kevin Miller Telephone (primary) : 818-393-6046 Telephone (secondary) : Fax : 818-393-5546 E-mail : Kevin.J.Miller@jpl.nasa.gov Additional Information : 13. More Information Primary Data Center : CDDIS Secondary Data Center : JPL URL for More Information : http://cddisa.gsfc.nasa.gov Hardcopy on File Site Map : Yes Site Diagram : Yes Horizon Mask : Yes Monument Description : Yes Site Pictures : Yes Additional Information : (multiple lines) Antenna Graphics with Dimensions AOAD/M_T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 BPA=ARP