International GPS Service NLIB Site Information Form See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Razmik Khachikyan Date Prepared : 2003-04-25 Report Type : UPDATE If Update: Previous Site Log : nlib_19990713.log Modified/Added Sections : 1, 3.5, 11, 12 1. Site Identification of the GNSS Monument Site Name : North Liberty VLBA site Four Character ID : NLIB Monument Inscription : 4007-S North Liberty-VLBA GPS Station Mark-JPL IERS DOMES Number : 40465M001 CDP Number : (A4) Monument Description : Concrete pillar Height of the Monument : 0.465 Monument Foundation : CONCRETE BLOCK Foundation Depth : (m) Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc) Date Installed : 1993-03-05 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) : Type of Monument : steel plate set flush in the center of a 0.610 : meter diameter concrete monolith that projects : 0.465 meters above the ground. : Monument information from "NASA Space Geodesy : Program : Technical Memorandum 4482, March 1993, p385. 2. Site Location Information City or Town : North Liberty State or Province : Iowa Country : USA Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : -130934.4493 Y coordinate (m) : -4762291.7386 Z coordinate (m) : 4226854.6638 Latitude (N is +) : +414617.73 Longitude (E is +) : -0913429.61 Elevation (m,ellips.) : 207.0648 Additional Information : Latitude, Longitude and Elevation derived from : "IERS Technical Note 20, Results and Analysis : of the ITRF94" March 1996; Table 6 "ITRF94 : Class B Station Coordinates at Epoch 1993.0", : pT67. : The NRAO VLBA station is located in east central : Iowa approximately 3 miles north of the town of : North Liberty, and 20 miles south of Cedar : Rapids. To reach the station from the North : Liberty Post Office, located at the intersection : of North Front Street and Dubuque Street, : proceed north on North Front Street 0.20 miles : to the "T" intersection on the left (west) with : Penn Street. Continue straight onto State Route : F-28 and proceed 2.0 miles to the "T" : : intersection on the left (west) with County Road : 47, a dirt road and a locked gate (obtain prior : approval from NRAO). Turn left (west) onto : County Road 47, passing through the gate and : proceed 0.2 miles to the NRAO site gate and : station. The site is enclosed by an 8 foot chain : link fence. : Site information from "NASA Space Geodesy : Program : Technical Memorandum 4482, March 1993, p383. 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : T102 Firmware Version : 2.6-93/01/08 Elevation Cutoff Setting : (deg) Date Installed : 1993-03-05 Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.2 Receiver Type : ROGUE SNR-8000 Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : T102 Firmware Version : 2.8-93/06/08 Elevation Cutoff Setting : (deg) Date Installed : 1993-06-15 Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.3 Receiver Type : ROGUE SNR-8000 Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : T102 Firmware Version : 94/10/10-17:01:54 Elevation Cutoff Setting : (deg) Date Installed : 1994-10-24 Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.4 Receiver Type : ROGUE SNR-8000 Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : T102 Firmware Version : 3.2.32.8 Elevation Cutoff Setting : (deg) Date Installed : 1999-07-09T15:00Z Date Removed : 1999-08-31T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware upgrade 3.5 Receiver Type : ROGUE SNR-8000 Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : T102 Firmware Version : 0.5 Elevation Cutoff Setting : (deg) Date Installed : 1999-08-31T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware change 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 Serial Number : 102 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.061 Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : Antenna Radome Type : JPLA Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1993-03-05 Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 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 : NLIB 7612 Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : 7612 Tied Marker DOMES Number : 40465S001 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 62.2278 dy (m) : -25.3872 dz (m) : -3.6259 Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : VLBA reference point 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 : H-MASER Input Frequency : Effective Dates : (CCYY-MM-DD/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 7.1 Instrumentation Type : VLBI Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 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 : National Radio Astronomy Observatory Preferred Abbreviation : NRAO Mailing Address : North Liberty Iowa VLBA Station : P.O. Box 622 : North Liberty, IA 52317 Primary Contact Contact Name : D.J. Beard Telephone (primary) : 319-626-6878 Telephone (secondary) : 319-626-6650 Fax : 319-626-3520 E-mail : dbeard@arana.aoc.nrao.edu Secondary Contact Contact Name : Mike Burgert Telephone (primary) : 309-626-6878 Telephone (secondary) : Fax : 319-626-3520 E-mail : mburgert@aoc.nrao.edu Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA 91109 USA Primary Contact Contact Name : David A. Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : 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 : www.unavco.ucar.edu/network Hardcopy on File Site Map : (Y or URL) Site Diagram : 12/94 Horizon Mask : 12/94 Monument Description : 12/94 Site Pictures : 12/94 Additional Information : (multiple lines) Antenna Graphics with Dimensions TURBOROGUE: DORNE MARGOLIN T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 ARP <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering