B: Applications

GLONASS Suffers Temporary Systemwide Outage; Multi-GNSS Receiver Overcomes Problem (updated)

GLONASS Suffers Temporary Systemwide Outage; Multi-GNSS Receiver Overcomes Problem (updated)

Smartphone tracking results from two smartphones. Yellow dotted line, GPS/GLONASS only; green dotted line, GPS/GLONASS/QZSS/BeiDou. Broadcom Corporation image.

Just when they thought it was safe to go back into space . . . .

The Russian GLONASS system, which had appeared to be recovering from a series of organizational and technical problems in recent years, appears to have suffered a systemic disruption during the past 24 hours — beginning just past 1 a.m. Moscow time on April 2 (UTC+4) — 6 p.m. EDT on Tuesday (April 1, 2014).

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By Inside GNSS
U.S. Air Force Authorizes Lockheed to Finish GPS III SVs 7 & 8

U.S. Air Force Authorizes Lockheed to Finish GPS III SVs 7 & 8

The U.S. Air Force has awarded Lockheed Martin more than $245 million in contract options to complete production of its seventh and eighth GPS Block III satellites.

The two space vehicles (SVs 07–08) received initial funding under a February 2013 long-lead material contract for the Air Force’s second set of four satellites, GPS III SV 05–08. Similar to this current award announced yesterday (April 1, 2014), the Air Force exercised an option to complete production of SVs 05–06 in December 2013.

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By Inside GNSS
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ESNC 2014 GNSS Innovation Competition Launches at ENC 2014

ESNC 2014 GNSS Innovation Competition Launches at ENC 2014

The European Satellite Navigation Competition (ESNC) 2014 will officially kick off on April 15 at the European Navigation Conference (ENC) in Rotterdam, The Netherlands, but the 11th round of the annual event opens Tuesday (April 1).

Launched by Anwendungszentrum GmbH Oberpfaffenhofen in 2004 with three partner regions, the ESNC has grown into a network of GNSS innovation and expertise with more than 20 regions taking part worldwide. Since 2004, the ESNC has received almost 2,400 submissions from 4,263 teams and named 204 award winners.

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By Inside GNSS
GPS Modernization Stalls

GPS Modernization Stalls

With the optimism of college-bound seniors touring the Ivy League, GPS managers have been weighing options to dramatically change the GPS constellation. Now, after studying the costs, considering the benefits, and assessing the funding climate, officials have made the starkly fiscal decision to stick close to home and take a few extra years to finish. 

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By Dee Ann Divis
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Igor Stojkovic

Igor Stojkovic

Igor Stojkovic is the principal search and rescue engineer on the Galileo program in ESA, responsible for design and development of the SAR/Galileo component of the MEOSAR System.

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By Inside GNSS
Who’s Your Daddy?
March 17, 2014

Who’s Your Daddy?

In this article, we will take a look at the various GNSS signals from the perspective of their cost-benefit tradeoffs. First, we’ll look at the evolution of consumer GPS architecture to date — where acquisition speed and sensitivity have been the main drivers of receiver architecture. That architecture has evolved rapidly to take full advantage of the characteristics of the GPS C/A code.

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By Inside GNSS
Galileo Works!

Galileo Works!

ESA Galileo IOV Test campaign authors, from left: Jörg Hahn, Stefano Binda, Edward Breeuwer, Roberto Prieto-Cerdeira, Marco Falcone, Alexander Mudrak, Gustavo Lopez- Risueño, Francisco Javier Gonzalez Martinez, and Daniel Blonski.

The objective of the IOV phase was to launch the first four operational Galileo satellites and to deploy the first version of a completely new ground segment. During this phase, the European Space Agency (ESA) needed to validate — in the operational environment — all space, ground, and user components and their interfaces, prior to full system deployment. With the assistance of industry partners, ESA had to analyze the performance of the Galileo system and its components with the objective to refine the full operational capability (FOC) system.

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By Inside GNSS
FY15 Budget: GPS III Procurement to Slow, Dual-Launch Funding Cut
March 6, 2014

FY15 Budget: GPS III Procurement to Slow, Dual-Launch Funding Cut

The Air Force is slowing GPS modernization and dropping part of the funding for dual launch of satellites, said defense officials describing the President’s Fiscal Year 2015 (FY15) budget on Wednesday (March 5, 2014).

Air Force Undersecretary Eric Fanning said the Air Force would continue to “honor our investments and obligations” regarding the Global Positioning System but would “reprofile” the GPS III program so that it meets constellation sustainment demands.

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By Inside GNSS
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