GPS World, August 2013
THE ALMANAC GNSS Internet Resources United States and Canada Canadian Space Geodesy Forum http gge unb ca Resources CANSPACE html This University of New Brunswick service presents daily GPS constellation status reports ionospheric disturbance warnings and news and discussion about GPS and other space based positioning systems by way of electronic mail Downloadable files are also available To subscribe e mail the one line message sub CANSPACE your_ name to listserv@ UNB CA For more information Terry Arsenault or Richard Langley phone 506 453 4698 fax 506 453 4943 e mail se@ unb ca National Executive Committee EXCOM for Space Based Positioning Navigation Timing PNT www gps gov governance excom The EXCOM advises senior national government leadership and coordinates with federal agencies about policy matters concerning GPS its augmentations and related systems The deputy secretaries of Defense and Transportation jointly chair the EXCOM Executive Committee membership includes equivalent level officials from NASA the departments of State Commerce Homeland Security Agriculture Interior and the Joint Chiefs of Staff Components of the Executive Office of the President and other selected agencies participate as observers The National Coordination Office an interagency staff directed by a member of the Senior Executive Service in Washington provides day to day administrative and operational support to the EXCOM The National Space Based PNT Advisory Board operates in an independent advisory capacity for the EXCOM as directed by the National PNT Policy and in accordance with the Federal Advisory Committee Act For more information National Coordination Office for Space Based PNT Herbert C Hoover Building Rm 2518 1401 Constitution Ave NW Washington D C 20230 202 482 5809 email pnt office@ gps gov National Geospatial Intelligence Agency NGA http earth info nga mil GandG sathtml The NGA Global Positioning System Division Ephemeris Support and Analysis Team maintains a website for Department of Defense and civilian users with precise GPS orbit and clock information based on tracking data collected from NGA U S Air Force and IGS stations Daily and weekly precise ephemeris and clock estimate data both center of mass pedata and antenna phase center apcpe are calculated on a 15 minute interval Approximately two years of data are kept at this site with previous data available on request NGA also offers a nine day orbit prediction ephemeris along with a daily orbit and clock rapid ephemeris also calculated on a 15 minute interval Earth Orientation Parameter Predictions based on data provided by the U S Naval Observatory are provided EOP coefficients and predictions used by the Air Force GPS Operational Control Segment are calculated each Thursday to go into effect the following Sunday through Saturday each new GPS week Daily EOPs are computed for testing and evaluation to be used in GPS III For more information Duty hours 6 a m 6 p m Mon Fri 314 676 9142 or DSN 846 9142 email gps@ nga mil 24 hour contact 314 676 9140 or DSN 846 9140 Natural Resources Canada Canadian Spatial Reference System www geod nrcan gc ca Natural Resources Canada Geodetic Survey Division operates the Canadian Active Control System CACS a national network of continuously operating GPS tracking stations Products derived from CACS include GPS observation data precise GPS orbits and precise GPS clock corrections The system supports the positioning requirements of a broad range of users including the most demanding post mission scientific applications providing coordinates in either the Canadian Spatial Reference System CSRS or the International Terrestrial Reference Frame ITRF An online Precise Point Positioning CSRS PPP service allows GPS users from around the world to recover accurate positions from a single GPS receiver by submitting their RINEX observation data via the Internet Information about access to CACS data availability and other geodetic products is available 24 hours a day from a free online subscription service CSRS Online Database For more information Contact the Information Management and Client Services unit 615 Booth Street Ottawa Ontario Canada K1A 0E9 phone 613 995 4410 fax 613 995 3215 email information@ geod nrcan gc ca U S Coast Guard Navigation Center www navcen uscg gov This site offers GPS constellation status scheduled outage updates user advisories and almanac data as well as Differential GPS and Coast Guard Local Notice to Mariners information Voice recording for GPS constellation status 703 313 5907 For more information Contact the NIS Watchstander 24 hours a day at 703 313 5900 email tis pf nisws@ uscg mil Scripps Orbit and Permanent Array Center SOPAC http sopac ucsd edu The Scripps Institution of Oceanography University of California San Diego maintains SOPAC which provides precise rapid ultra rapid and hourly orbits for the International GNSS Service IGS and NOAAs Global Systems Division GSD Many GPS related services and tools are available from SOPACs website such as SCOUT a global ITRF Coordinates Generator Site Information Manager SIM Online Map Interface SOMI and GPS Explorer SOPAC archives 24 hour RINEX data from about 1500 continuous GPS sites from more than 20 scientific networks around the world with a concentration in western North America SOPAC also maintains the operational center for the California Spatial Reference Center or CSRC http csrc ucsd edu The CSRC provides Californias geodetic framework for scientific engineering and geographical information systems in partnership with the National Geodetic Survey SOPAC also collects and archives high rate 1 Hz low latency 1 second GPS data from stations in California For information about access to real time data streams visit http sopac ucsd edu projects realtime For more information Contact SOPAC Scripps Institution of Oceanography UCSD IGPP 0225 9500 Gilman Drive La Jolla CA 92093 0225 USA phone 858 822 2156 fax 858 534 9873 DoD GPS Operations Center 2SOPS Constellation Status https gps afspc af mil gpsoc https gps afspc af mil gps The U S Department of Defense DoD GPS Operations Center and the 2nd Space Operations Squadron 2SOPS U S Air Force maintain Internet sites for military and DoD users The center provides DOP predictions GPS performance assessments anomaly impact analysis GPS FAQs and other services to meet the needs of GPS users in the field 2SOPS operates a GPS constellation status site with scheduled outages user advisories almanac data electronic mail and downloadable files For more information Military Contact GPS Operations Center at DSN 560 2541 or 719 567 2541 U S National Geodetic Survey GPS Orbit Information www ngs noaa gov CORS NOAAs National Geodetic Survey NGS manages a network of Continuously Operating Reference Stations CORS that provide GPS data to support three dimensional positioning meteorology space weather and geophysical applications throughout the United States its territories and a few foreign countries The CORS network is a multipurpose cooperative endeavor involving more than 200 government academic and private organizations NGS partners contribute more than 1900 independently owned and operated stations to the CORS network The primary objective of the CORS Program is to define and maintain the National Spatial Reference System NSRS For more information email ngs cors@ noaa gov U S Naval Observatory www usno navy mil USNO time gps The U S Naval Observatory USNO provides GPS timing data and status information For more information Contact Stephen Mitchell phone 202 762 1455 or DSN 762 1455 email stephen mitchell@ usno navy mil International International GNSS Service IGS www igs org The foundation of IGS is a global network of more than 350 permanent continuously operating geodetic quality GPS and GPS GLONASS sites Ten analysis centers regularly process the data and contribute products to the analysis center coordinator who produces the official IGS combined orbit and clock products For more information Contact International GNSS Service Central Bureau Jet Propulsion Lab MS 238 540 Pasadena CA 91109 USA phone 818 354 2077 fax 818 393 6686 email cb@ igs org Australia www ga gov au Geoscience Australia is Australias national agency for geoscience research and geospatial information It maintains a comprehensive website with information about many GPS related topics Users can download data from the Australian Regional GPS Network and view graphs of data quality and time series of positions An online GPS processing service AUSPOS allows users to upload dual frequency Rinex data and receive computed ITRF positions rapidly by email Within Australia these ITRF positions are also transformed to the Geocentric Datum of Australia The site provides information about Australian coordinates datums and transformations Geoid ellipsoid separations for the region can be downloaded or computed online For more information phone 61 2 6249 9111 email geodesy@ ga gov au Czech Republic http radio feld cvut cz RSRDC doku php id almanacs The Czech Technical University Faculty of Electrical Engineering Department of Radio Engineering in Prague Czech Republic offers historical constellation status and almanac data for both GPS and GLONASS systems For more information Email service administrator at pavel puricer@ fel cvut cz or contact Frantisek Vejrazka Czech Technical University Technicka 2 166 27 Prague 6 Czech Republic phone 420 2 2435 2246 fax 420 2 3333 9801 email vejrazka@ feld cvut cz Denmark www gst dk Danish Geodata Agency provides GNSS raw carrier phase data by request This services are based on the permanent reference station network operated by the Danish Geodata Agency GST For more information Contact Casper Jepsen Danish Geodata Agency Rentemestervej 8 DK 2400 Copenhagen NV Denmark phone 45 72 54 50 00 e mail gst@ gst dk Russia http glonass iac ru The Information Analytical Center IAC of the Russian Space Agency publishes official information about GLONASS status and plans as well as consultation information and scientific method services to increase GLONASS applications efficiency It provides current constellations Earth maps of the current and daily navigation availabilities results of GNSS navigation field monitoring in the Moscow area in a real time mode and other data For more information IAC Mission Control Center e mail glonass ianc@ mcc rsa ru COPYRIGHT 2013 NORTH COAST MEDIA LLC All rights reserved No part of this publication may be reproduced or transmitted in any form by any means electronic or mechanical including by photocopy recording or information storage and retrieval without permission in writing from the publisher Authorization to photocopy items for internal or personal use or the internal or personal use of specific clients is granted by North Coast Media LLC for libraries and other users registered with the Copyright Clearance Center 222 Rosewood Dr Danvers MA 01923 phone 978 750 8400 fax 978 750 4470 Call for copying beyond that permitted by Sections 107 or 108 of the U S Copyright Law PRIVACY NOTICE North Coast Media LLC provides certain customer contact data such as customers names addresses phone numbers and email addresses to third parties who wish to promote relevant products services and other opportunities which may be of interest to you If you do not want North Coast Media LLC to make your contact information available to third parties for marketing purposes simply call 847 763 4942 between the hours of 8 30 am and 5 pm CT and a customer service representative will assist you in removing your name from North Coast Media LLCs lists GPS WORLD ISSN 1048 5104 is published monthly by North Coast Media LLC IMG Center 1360 East 9th Street Suite 1070 Cleveland OH 44114 SUBSCRIPTION RATES One year 80 two years 129 U S and possessions one year 96 two years 151 Canada and Mexico and one year 155 two years 255 all other countries International pricing includes air expedited service Single copies prepaid only 7 in the United States 9 all other countries Back issues if available are 19 in the U S and possessions 23 all other countries Include 650 per order plus 2 per additional copy for U S postage and handling Periodicals postage paid at Cleveland OH 44101 9603 and additional mailing offices POSTMASTER Please send address change to GPS World PO Box 2090 Skokie IL 60076 Printed in the U S A GPS World August 2013 www gpsworld com 50
You must have JavaScript enabled to view digital editions.
