GNSS

First Galileo Commercial Service Demonstration with Encrypted Signals

July 29, 2014By

Galileo’s Early Proof of Concept (EPOC) team has successfully tracked the encrypted Galileo E6-B and E6-C signals broadcast by Galileo satellites. As a result, the Commercial Service loop has been closed using both encrypted and non-encrypted signals, GSA said. During a 10-day testing period, receivers in Tres Cantos, Spain and Poing, Germany, showed the successful tracking and data demodulation of... read more

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General Dynamics Awarded $25M by Lockheed for GPS III Program

July 29, 2014By

At least some of the work on GPS III continues along prepared tracks, with the award of a Lockheed Martin contract to General Dynamics for two more satellites’ worth of communications hardware. General Dynamics Advanced Information Systems, a business unit of General Dynamics, was awarded a $25.4 million full-production contract from Lockheed Martin to support the GPS III Network Communications Element (NCE)... read more

Boeing, Northrop Grumman Enter GPS III Bid

July 8, 2014By

Northrop Grumman and Boeing have responded to a U.S. Air Force call for contractors interested in building a follow-on set of GPS III satellites, according to a report in Space News. Lockheed Martin is under contract to deliver the first eight GPS III satellites, but the award for up to 22 further IIIs remains open. Difficulties with the payload for... read more

Power Loss Created Trouble Aboard Galileo Satellite

July 8, 2014By and
GalileoStatus-O

In an update to our July 2 story (recapped below), correspondent Peter de Selding wrote in Space News on July 3 that the trouble aboard the fourth in-orbit (IOV) Galileo satellite arose from a sudden, unexpected loss of power. The power outage flashed on May 27, shutting down the satellite’s E1 signal. The signal “re-established itself almost immediately. But as... read more

Galileo Masters Deadline Extended to July 7

July 1, 2014By
esnc13

The Galileo Masters competition deadline has been extended a week, until July 7. The European Satellite Navigation Competition (ESNC) is looking for services, products, and business innovations that use satellite navigation in everyday life. “The ESNC submission database was originally scheduled to close this Monday at midnight (CET). As the ESNC has met with considerable interest and plenty of new registrations... read more

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‘Flying for GPS': Memoir of a Pioneer Era — Excerpt

July 1, 2014By

Flying for GPS, a chronicle of Len Jacobson’s role in the development and promotion of the Global Positioning System, has just been published. The book spans a 50-year career, during which Jacobson flew 2.5 million miles as a missionary for GPS and as a developer of user equipment. He kept an extensive log of all of his flights, and it... read more

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CGSIC Releases GPS Interface Documents, Opens Registration

June 30, 2014By

Three new GPS Interface Specification documents have been issued by the Civil Global Positioning System Service Interface Committee: Navstar GPS Space Segment/Navigation User Interfaces (IS-GPS-200H, 24 Sep 2013) Navstar GPS Space Segment/User Segment L5 Interfaces (IS-GPS-705D, 24 Sep 2013) Navstar GPS Space Segment/User Segment L1C Interface (IS-GPS-800D, 24 Sp 2013) The new documents are posted on the NAVCEN GPS References... read more

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The System: GLONASS in April, What Went Wrong

June 24, 2014By
Figure 1. Affected broadcast messages for each GLONASS satellite. Colors indicate the different orbit planes.

By Gerhard Beutler, Rolf Dach, Urs Hugentobler, Oliver Montenbruck, Georg Weber, and Elmar Brockmann What Happened: On April 1, 2014, at 21:15 UTC, all GLONASS satellites started to transmit wrong Broadcast Messages (BM) as previously reported by GPS World. The satellite positions derived from these BM were wrong by up to ± 200 kilometers in each of the three coordinates... read more