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sci.geo.satellite-nav (Global Satellite Navigation) (sci.geo.satellite-nav) Discussion of global navigation satellite systems (GNSS). Topics include the technical aspects of GNSS operation, user experiences in the use of GNSS, information regarding GNSS products and discussion of GNSS policy (such as GPS selective availability).

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NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013031-32 by Sam Wormley[_2_]
2013031------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013031 SUBJ: SVN66 (PRN27) LAUNCH JDAY 135 1. NANU TYPE: LAUNCH NANU NUMBER: 2013031 NANU DTG: 152256Z MAY 2013 SVN: 66 PRN: 27 LAUNCH JDAY: 135
June 5th 13 10:26 PM
by Sam Wormley[_2_] Go to last post
0 279
ST-Ericsson Sells GPS Business to Intel by Sam Wormley[_2_]
ST-Ericsson Sells GPS Business to Intel http://www.gpsworld.com/st-ericsson-sells-gps-business-to-intel/ The closing of the transaction is subject to regulatory approvals and standard conditions and is expected to be completed in August. ST-Ericsson estimates the proceeds from the sale, combined with the avoidance of employee restructuring charges and other related restructuring...
June 4th 13 10:31 PM
by Sam Wormley[_2_] Go to last post
0 323
Part 2: Nightmare on GIS Street – Accuracy, Datums, and Geospatial Data by Sam Wormley[_2_]
Part 2: Nightmare on GIS Street – Accuracy, Datums, and Geospatial Data http://geospatial-solutions.com/part-2-nightmare-on-gis-street-accuracy-datums-and-geospatial-data/
May 24th 13 06:54 AM
by oriel36[_2_] Go to last post
2 795
GPS satellites are suitable for climate research if... by Sam Wormley[_2_]
http://phys.org/news/2013-05-error-sought-state-of-the-art-technique-optimised.html GPS satellites are suitable for climate research if the interaction between the atmosphere and their signals is better understood. Read more at: http://phys.org/news/2013-05-error-sought-state-of-the-art-technique-optimised.html#jCp A systematic error has been eliminated from a measurement...
May 23rd 13 04:30 PM
by Sam Wormley[_2_] Go to last post
0 370
What’s New in GNSS Simulation? by Sam Wormley[_2_]
What’s New in GNSS Simulation? http://www.gpsworld.com/whats-new-in-gnss-simulation/ The spectrum of today’s providers seems to range from highly sophisticated scientific systems used for development by precision receiver manufacturers, through systems with GNSS and aiding solutions, to specialized systems for both general and specific application developers and also for production...
May 12th 13 02:26 PM
by oriel36[_2_] Go to last post
1 481
IERS references by oriel36[_2_]
"Universal Time is notionally based on the WGS84 meridian. Because of changes in the Earth's rotation, the standard international time UTC can differ from the mean observed time on the meridian by up to 0.9 second (equivalent to about 260 metres at Greenwich). Leap seconds are inserted periodically to keep UTC close to Earth's angular position relative to the Sun — mean solar...
May 12th 13 01:57 PM
by oriel36[_2_] Go to last post
0 430
[somewhat OT] Falcone slapped very lightly on left wrist by SEC by Alan Browne
Washington post. http://tinyurl.com/cnk723s http://preview.tinyurl.com/cnk723s QUOTE Billionaire Philip Falcone has reached a preliminary settlement with federal regulators that effectively bans him from financial activities for two years, a rapid fall for a man once seen as the hedge-fund industry’s savviest mind.
May 10th 13 11:59 PM
by oriel36[_2_] Go to last post
1 501
Air Force Examining Broader Options for Next GPS III Satellite Buy by Sam Wormley[_2_]
Air Force Examining Broader Options for Next GPS III Satellite Buy http://www.insidegnss.com/node/3538 The Air Force will decide this fall whether to build more GPS III satellites or move to a new generation of spacecraft, the leader of Air Force Space Command told Congress last week. “We’re on contract right now . . . through (GPS III) satellite vehicle number eight. Satellite...
(Multi-page thread 1 2)
May 9th 13 07:52 AM
by oriel36[_2_] Go to last post
17 978
GPS Block IIF-4 Launch Set for May 15 by Sam Wormley[_2_]
GPS Block IIF-4 Launch Set for May 15 http://www.gpsworld.com/gps-block-iif-4-launch-set-may-15/ The next GPS satellite launch is scheduled for May 15 with the launch window extending from 21:39 to 21:58 UTC. An Atlas 5 rocket will be used to place the satellite, GPS IIF-4, into orbit from Cape Canaveral Air Force Station. This is the first time in almost 28 years that an Atlas...
May 7th 13 08:17 PM
by Sam Wormley[_2_] Go to last post
0 413
Galileo Now Tells UTC Time by Sam Wormley[_2_]
Galileo Now Tells UTC Time http://www.gpsworld.com/galileo-now-tells-utc-time/ Europe’s four Galileo satellites are now working as clocks accurate to a few billionths of a second, disseminating the exact time through their signals expressed as the UTC Universal Coordinated Time global standard, reports the European Space Agency.
May 2nd 13 05:47 AM
by oriel36[_2_] Go to last post
9 1,060
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013027 by Sam Wormley[_2_]
2013027------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013027 SUBJ: SVN35 (PRN30) DECOMMISSIONING JDAY 121/2200 1. NANU TYPE: DECOM NANU NUMBER: 2013027 NANU DTG: 012216Z MAY 2013 REFERENCE NANU: 2013022 REF NANU DTG: 281132Z MAR 2013 SVN: 35 PRN: 30
May 2nd 13 12:30 AM
by Sam Wormley[_2_] Go to last post
0 427
Success in initializing and reading nuclear spins brings quantumcomputer a step closer by Sam Wormley[_2_]
Success in initializing and reading nuclear spins brings quantum computer a step closer http://phys.org/news/2013-04-success-nuclear-quantum-closer.html A quantum computer is controlled by the laws of quantum physics; it promises to perform complicated calculations, or search large amounts of data, at a speed that exceeds by far those that today's fastest supercomputers are capable...
May 1st 13 02:39 AM
by Sam Wormley[_2_] Go to last post
0 401
Russia Launches GLONASS-M Satellite by Sam Wormley[_2_]
Russia Launches GLONASS-M Satellite http://www.gpsworld.com/glonass-satellite-launched/ More information http://en.wikipedia.org/wiki/GLONASS#Renewed_efforts_and_modernization
April 30th 13 09:25 PM
by Sam Wormley[_2_] Go to last post
0 391
The Inner Edge: Who Holds the Key to Indoor Nav? by Sam Wormley[_2_]
The Inner Edge: Who Holds the Key to Indoor Nav? http://www.gpsworld.com/the-inner-edge-who-holds-the-key-to-indoor-nav/ The FCC released in March results of intensive indoor location trials of various technology solutions to this most difficult of PNT problems — yet the one that will unlock the greatest remaining untapped potential. The results will shape FCC-mandated ...
April 17th 13 01:14 PM
by Greg Troxel Go to last post
2 479
Military GPS Budget Appears Steady as President Bids to Slow DefenseCuts by Sam Wormley[_2_]
Military GPS Budget Appears Steady as President Bids to Slow Defense Cuts http://www.insidegnss.com/node/3528
April 17th 13 01:15 AM
by Sam Wormley[_2_] Go to last post
0 300
Comments Sought on Future User Needs for Nationwide DGPS by Sam Wormley[_2_]
Comments Sought on Future User Needs for Nationwide DGPS http://www.gpsworld.com/comments-sought-on-future-user-needs-for-nationwide-dgps/ The U.S. Department of Transportation’s Research and Innovative Technology Administration (RITA), in partnership with the U.S. Coast Guard, is seeking public comments on current and future user needs for the Nationwide Differential Global...
April 16th 13 10:32 PM
by Sam Wormley[_2_] Go to last post
0 317
Comodo Integrates Skyhook Wireless Location Tech into Android Anti-TheftApp by Sam Wormley[_2_]
Comodo Integrates Skyhook Wireless Location Tech into Android Anti-Theft App http://www.gpsworld.com/comodo-integrates-skyhook-wireless-location-tech-into-android-anti-theft-app/ Skyhook Wireless, a provider of location positioning, announced a partnership to integrate Skyhook’s hybrid location platform into Comodo’s Anti-Theft app for Android devices. Comodo’s Anti-Theft for Android...
April 10th 13 08:33 PM
by Sam Wormley[_2_] Go to last post
0 384
Om nom nom: black hole dismembers and eats a large planet by Sam Wormley[_2_]
Om nom nom: black hole dismembers and eats a large planet http://arstechnica.com/science/2013/04/om-nom-nom-black-hole-dismembers-and-eats-a-large-planet/ Black holes have a fearsome reputation that's only partly justified. The maw of a black hole is indeed a potentially destructive thing, but most matter—including gas stripped from nearby stars—is not destined to end inside the...
April 7th 13 01:45 PM
by Alan Browne Go to last post
6 796
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013023 by Sam Wormley[_2_]
2013023------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013023 SUBJ: SVN54 (PRN18) FORECAST OUTAGE JDAY 094/1115 - JDAY 094/2315 1. NANU TYPE: FCSTDV NANU NUMBER: 2013023 NANU DTG: 291539Z MAR 2013 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 54 PRN: 18
March 29th 13 05:58 PM
by Sam Wormley[_2_] Go to last post
0 349
Use of GPS signal propagation for weather forecasts by Alan Browne
http://bits.blogs.nytimes.com/2013/03/28/a-marshall-mcluhan-approach-to-weather-forecasting/?ref=technology or http://tinyurl.com/c2a35e9 (Has this come up here before?). -- "There were, unfortunately, no great principles on which parties
March 28th 13 10:02 PM
by Alan Browne Go to last post
0 328
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