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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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Is there a way to show KML tracks in Google Maps? by Mitch Kaufmann
Thank you for your help. Here is the summary of what I will send out to the recipients. TO VIEW OUR GPS TRACKS IN A GOOGLE MAPS BROWSER (TERRAIN/TOPO): ------------------------------------------------------ a. Go to https://www.google.com/mymaps on any web browser. b. Click on "Create a new map" (mandatory google signin, sorry). c. Register a google account name (it has to be done, sorry). d....
October 2nd 15 03:05 AM
by Mitch Kaufmann Go to last post
0 624
Bits for PRN code by [email protected]
What is the maximum number of bits for a PRN code that is 1023 bit maximum but maintains sufficient orthogonality with other PRNs to avoid signal degradation due to interference with the other codes? I know there are about 210 PRNs in the registry, but I'm wondering if there's a larger superset where some unassigned, but used, secretive PRNs lurk? Michael Sabino AC9HH
September 25th 15 05:02 PM
by Alan Browne Go to last post
3 638
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015081 by [email protected]
May I suggest sci.geo.satellite-nav needs not duplicate messages originally posted at the official GPS NANU email list server, whose subscription form is available at: http://www.navcen.uscg.gov/?pageName=listServerForm -FGN. On Friday, September 11, 2015 at 10:12:17 AM UTC-3, Sam Wormley wrote: 2015081------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015081 ...
September 23rd 15 01:13 PM
by Thomas Laus Go to last post
2 665
Researchers developed highly accurate method for measuring luminousefficacy of LEDs by Sam Wormley[_2_]
Researchers developed highly accurate method for measuring luminous efficacy of LEDs http://phys.org/news/2015-09-highly-accurate-method-luminous-efficacy.html "LED lamps emit light to all directions. In order to measure the luminous efficacy, we thus use a device called an integrated sphere, which takes into account light coming from different directions, he specifies and reminds us...
September 18th 15 07:11 PM
by Sam Wormley[_2_] Go to last post
0 504
Climate Researchers Plan Glider Mission to Edge of Space by Sam Wormley[_2_]
Climate Researchers Plan Glider Mission to Edge of Space http://www.climatecentral.org/news/glider-mission-to-edge-of-space-19472 Not a lot is known about the weather at 90,000 feet above the earth’s surface, so a team of scientists and aviators are going to fly there using an engineless aircraft to learn more about what the weather at such extreme altitudes has to say about climate...
September 18th 15 07:08 PM
by Sam Wormley[_2_] Go to last post
0 483
Good Story | Lost Over the Pacific by Sam Wormley[_2_]
Lost Over the Pacific http://gpsworld.com/lost-over-the-pacific/ In other words, we need an inertial system that is a system of systems, which today are ideally comprised of CSAC and GPS devices with a laser gyro. In the not too distant future, a cold atom interferometer MEMS (microelectromechanical system) inertial with CSAC and GPS all backed up by eLORAN is probable. That,...
September 9th 15 07:46 PM
by Sam Wormley[_2_] Go to last post
0 469
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015078 by Sam Wormley[_2_]
2015078------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015078 SUBJ: SVN67 (PRN06) FORECAST OUTAGE SUMMARY JDAY 244/1859 - JDAY 245/0051 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2015078 NANU DTG: 020058Z SEP 2015 REFERENCE NANU: 2015077 REF NANU DTG: 261915Z AUG 2015 SVN: 67
September 2nd 15 01:18 AM
by Sam Wormley[_2_] Go to last post
0 437
NDGPS Destined for the Technological Boneyard by Sam Wormley[_2_]
NDGPS Destined for the Technological Boneyard http://gpsworld.com/ndgps-destined-for-the-technological-boneyard/ Let us not exaggerate — nor prematurely announce — the death of a subsystem. However, the demise of the U.S. Nationwide Differential GPS (NDGPS) network can be confidently foretold. Although a Federal Register notice dated Aug. 18 merely seeks public comment on plans to ...
August 26th 15 07:49 PM
by Sam Wormley[_2_] Go to last post
0 452
Ultra-wideband Re-emerges as a GNSS Interference Issue by Sam Wormley[_2_]
Ultra-wideband Re-emerges as a GNSS Interference Issue http://www.insidegnss.com/node/4608 The Federal Communications Commission (FCC) is weighing a request to waive spectrum rules for a new ultra-wideband (UWB) device that would operate across a wide swath of frequencies including those used by satellite navigation. The proposal has prompted a call for a wider reconsideration of...
August 17th 15 08:33 PM
by Sam Wormley[_2_] Go to last post
0 491
First Signals of BeiDou Phase 3 Acquired at Ispra, Italy by Sam Wormley[_2_]
First Signals of BeiDou Phase 3 Acquired at Ispra, Italy http://gpsworld.com/first-signals-of-beidou-phase-3-acquired-at-ispra-italy/ On July 25, China launched two modernized BeiDou satellites. Although the nomenclature is still controversial, the Joint Space Operations Centre / North American Aerospace Defense Command identifiers for the satellites are BEIDOU-3 M1 and BEIDOU-3 M2....
August 11th 15 07:20 PM
by Sam Wormley[_2_] Go to last post
0 476
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015071 by Sam Wormley[_2_]
2015071------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015071 SUBJ: SVN53 (PRN17) FORECAST OUTAGE SUMMARY JDAY 209/1624 - JDAY 209/2132 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2015071 NANU DTG: 282144Z JUL 2015 REFERENCE NANU: 2015070 REF NANU DTG: 211929Z JUL 2015 SVN: 53
July 28th 15 10:19 PM
by Sam Wormley[_2_] Go to last post
0 454
As June 30 Nears, Leap Second Looms by Sam Wormley[_2_]
As June 30 Nears, Leap Second Looms http://gpsworld.com/as-june-30-nears-leap-second-looms/ The world’s clocks will be adjusted by one second one week from today on June 30, when a leap second will be inserted into Coordinated Universal Time (UTC), the standard international time scale. The financial market is preparing for potential disruptions. The adjustment could present...
July 7th 15 08:35 PM
by J. J. Lodder Go to last post
6 702
NO leap second will be introduced at the end of December 2015 by Sam Wormley[_2_]
INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE SERVICE DE LA ROTATION TERRESTRE OBSERVATOIRE DE PARIS 61, Av. de l'Observatoire 75014 PARIS (France)
July 7th 15 04:10 PM
by Alan Browne Go to last post
1 472
U.S. Secretary of Defense Wants to Move Past GPS to MEMS-BasedNavigation, PNT Experts Doubtful by Sam Wormley[_2_]
U.S. Secretary of Defense Wants to Move Past GPS to MEMS-Based Navigation, PNT Experts Doubtful http://www.insidegnss.com/node/4553 Ashton Carter, the new U.S. Secretary of Defense has been making clear he supports moving past GPS to a disbursed network based on microelectromechanical systems or MEMS for position, navigation, and timing (PNT) information. Carter, who was tapped to...
July 1st 15 05:48 PM
by Alan Browne Go to last post
4 604
It’s Leap Second Day! Time to Get in Sync by Sam Wormley[_2_]
It’s Leap Second Day! Time to Get in Sync http://gpsworld.com/its-leap-second-day-time-to-get-in-sync/ “Time waits for no one,” Mick Jagger lamented in song when he turned 30. But tonight, on the evening of June 30, our clocks will stand still for a moment, waiting for the passage of a “leap second.” The International Earth Rotation and Reference Frames Service (the world’s time...
June 30th 15 09:28 PM
by Sam Wormley[_2_] Go to last post
0 482
eLoran Progresses Toward GPS Back-Up Role in U.S., Europe by Sam Wormley[_2_]
eLoran Progresses Toward GPS Back-Up Role in U.S., Europe http://gpsworld.com/eloran-progresses-toward-gps-back-up-role-in-u-s-europe/ As of June 19, eLoran is on the air in the United States. The low-frequency signal emanates from a single station, a former U.S. Coast Guard Loran Unit in Wildwood, N.J., which sports a 625-foot signal mast that has been out of action for five years....
June 28th 15 03:22 PM
by Alan Browne Go to last post
3 565
Fwd: WARNING: Geomagnetic K-index of 7 or greater expected -- Issue by Sam Wormley[_2_]
Space Weather Message Code: WARK07 Serial Number: 50 Issue Time: 2015 Jun 22 1813 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2015 Jun 22 1815 UTC Valid To: 2015 Jun 22 2200 UTC Warning Condition: Onset NOAA Scale: G3 or greater - Strong to Extreme
June 22nd 15 06:28 PM
by Sam Wormley[_2_] Go to last post
0 437
Study: GPS Contributed More Than $68 Billion to the U.S. Economy(in 2013) by Sam Wormley[_2_]
Study: GPS Contributed More Than $68 Billion to the U.S. Economy (in 2013) http://www.insidegnss.com/node/4535 “This is not just an academic exercise,” said Leveson. The research was undertaken, he said, “to have a basis for policy analysis which can be used for looking at the implications of actions such as allowing interference, spectrum sharing reallocation, developing ...
June 17th 15 12:22 AM
by Sam Wormley[_2_] Go to last post
0 452
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015041-42 by Sam Wormley[_2_]
2015041------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015041 SUBJ: SVN45 (PRN21) FORECAST OUTAGE JDAY 156/0300 - JDAY 156/1500 1. NANU TYPE: FCSTDV NANU NUMBER: 2015041 NANU DTG: 291507Z MAY 2015 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 45
June 3rd 15 04:34 PM
by Sam Wormley[_2_] Go to last post
0 488
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015040 by Sam Wormley[_2_]
2015040------------------------ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2015040 SUBJ: SVN68 (PRN09) FORECAST OUTAGE SUMMARY JDAY 148/1400 - JDAY 148/1915 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2015040 NANU DTG: 281922Z MAY 2015 REFERENCE NANU: 2015038 REF NANU DTG: 192042Z MAY 2015 SVN: 68
May 28th 15 07:56 PM
by Sam Wormley[_2_] Go to last post
0 473
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