GNSS

Innovation: A Bright Idea

November 4, 2014By
FIGURE 5. The light of the fourth lamp in the corridor is blocked by shelves, and the corresponding sine-like light pattern does not appear.

Testing the Feasibility of Positioning Using Ambient Light By Jingbin Liu, Ruizhi Chen, Yuwei Chen, Jian Tang, and Juha Hyyppä AND THEN THERE WAS LIGHT. Well, the whole electromagnetic (EM) spectrum, actually. Visible light occupies only a small portion of the spectrum, which extends from below the extremely low frequency (ELF) 3 to 30 hertz band with equivalent wavelengths of... read more

This article is tagged with , and posted in Algorithms & Methods, Innovation

Airbus Defence & Space Wins ESNC Competition

November 3, 2014By
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The winner of the European Satellite Navigation Competition (ESNC) 2014 is Airbus Defence & Space, which won over the jury of experts from around the world with its ground-breaking and cost-effective receiver for the Galileo Public Regulated Service (PRS). The award winners were announced October 23 at an awards ceremony held at the Berlin headquarters of Deutsche Telekom. The awards recognize innovations in the... read more

The System: Fregat Design Ambiguity Steered Galileo Wrong

November 1, 2014By

Cross-Installed Hydrazine, Helium Lines Froze Thrusters The root cause of the anomaly that sent two Galileo satellites into the wrong orbit on August 22 was a shortcoming in the system thermal analysis performed during stage design, and not an operator error during stage assembly, according to findings by an independent inquiry board. The independent inquiry board was created by Arianespace,... read more

This article is tagged with , , , , , , , and posted in Galileo, GNSS News, The System

Toward a Unified PNT — Part 2

October 31, 2014By
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The coming requirements of greater accuracy and reliability in a range of challenging environments for a multitude of mission-critical applications require a multisensor approach and an over-arching methodology that does not yet exist. read more

U.S. Still Not Allowing GLONASS Stations

October 31, 2014By

Pravda is reporting that the United States refused to negotiate with Russia to deploy GLONASS ground on its territory, citing an interview with Russian Deputy Prime Minister Dmitry Rogozin. Rogozin stressed that no negotiations were taking place. “We have made a statement in the spring. I offered to initiate talks with the United States to deploy GLONASS infrastructure in their territory, as long... read more

This article is tagged with and posted in GLONASS, GNSS News, Latest News

Russia to Insure Next GLONASS Launch

October 31, 2014By

The next GLONASS launch — the GLONASS-K1 satellite from Plesetsk scheduled for November 20 — is being insured for 2.17 billion rubles ($50 million US). The insurance is costing Russia 242 million roubles ($5.6 million US). Russia has faced numerous technical difficulties in its launches. On May 15, a Proton-M satellite crashed. In 2013, Russia lost three GLONASS satellites when their launch aboard a Proton-M rocket... read more

This article is tagged with and posted in GLONASS, GNSS News, Latest News

Galileo: A Constellation of One?

October 29, 2014By

Matters sit not well with Galileo, the European GNSS. Only one of six currently orbiting satellites can be said to be truly and fully operational. With these troubles augmented by persistent uncertainties regarding the fitness of Soyuz rockets, despite a recent inquiry panel that identified a root cause of the August launch failure, the European Commission has nixed an upcoming... read more

This article is tagged with and posted in GNSS Opinions, Newsletter Editorials

GPS IIF-8 Launched Successfully from Cape Canaveral

October 29, 2014By
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The U.S. Air Force launched the eighth GPS IIF satellite from Cape Canaveral Air Force Station in Florida today at 1:21 Eastern Time, as scheduled. An Atlas V 401 carried the GPS satellite aloft. GPS IIF-8 is one of the next-generation GPS satellites, incorporating various improvements to provide greater accuracy, increased signals, and enhanced performance for users. With this eighth satellite now launched, only four more Block... read more

This article is tagged with , and posted in Featured Stories, GNSS News, GPS Modernization, Latest News