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April 20, 2009

Septentrio Receivers Track L5, Other SVN49 Signals

Septentrio reports success in tracking five signals being transmitted from the modernized GPS Block IIR satellite with the L5 demonstration payload launched on March 24.

Now designated space vehicle number 49 (SVN49), the satellite began broadcasting in the L1 and L2 band on March 28, shortly after the spacecraft reached its quasi-circular middle earth sorbit.

April 19, 2009

Congress, U.S. Trade Rep Seek Public Comment on Access to Galileo Markets

Prompted by a congressional footnote in the 2009 Omnibus Appropriations Act signed into law last month, the Office of the U.S. Trade Representative (USTR) is soliciting public comment on American industry’s access to the Galileo program and related markets.

April 18, 2009

China Launches Second Compass (Beidou-2) Satellite in $1.46 Billion First Phase

Launch of a second modernized Compass (Beidou 2) satellite on April 14 — this one a geostationary spacecraft — marks the return of China to its GNSS launch program two years after the initial venture into space.

Designated Compass G2 — reflecting the geostationary nature of its intended orbital position about 22,300 miles above the equator, the satellite lifted off at 16:16 UTC aboard a Long March 3C rocket from the Xichang launch base in southwestern China's Sichuan province, according to China’s state news agency Xinhua.

March 26, 2009

European Court of Auditors Lambastes Galileo Satellite Navigation Program

Here's an interesting document: Preliminary observations on “The management of the Galileo programme’s development and validation phase,” adopted at its January 21–22 meeting by the European Court of Auditors (ECA).

If you're the kind of person who wakes up in a strange room after a night on the town and wonders how you got there, you’ll want to take in the full 50-page report and six addenda.

Inside GNSS • March/April 2009

What Race? What Competition? The Four GNSS Systems

Munich’s high-level satnav summit the first week in March opened with a plenary titled, “The Worldwide Race in GNSS” and closed with a panel, “The Competition among the Big Four.”

Despite the provocative session titles, few speakers were willing to admit that either a race or a competition was under way in the GNSS world.

March 23, 2009

GPS, GLONASS, Galileo, Compass: What GNSS Race? What Competition

(This story appears in the "GNSS World" department in the March-April 2009 issue of Inside GNSS.)

Munich’s high-level satnav summit the first week in March opened with a plenary titled, “The Worldwide Race in GNSS” and closed with a panel, “The Competition among the Big Four.”

March 6, 2009

Munich Summit Highlights Satellite Navigation Plans, GNSS Program Struggles

Highlights of the 2009 Munich Satellite Navigation Summit (March 3- 5):
Russia will place its first CDMA signal on the GLONASS L3 frequency that overlaps the European Galileo E5b spectrum; China plans to launch three Compass satellites this year and seven more next year to provide a regional capability for Compass/Beidou, followed by completion of the full 30-MEO, 5-GEO constellation after 2015 and before 2020; Galileo program discussions revealed tensions around negotiations with China about a frequency overlay of Compass signals on the security-oriented Public Regulated Service as well as the question of whether the costs to build Galileo can be kept within the €3.4-billion limit agreed by the European Council and the European Parliament; the GPS Block IIR-20(M) satellite with an L5 demonstration payload will be launched later this month in what may be the program's last chance to secure primary GPS access to the frequency.

February 16, 2009

CSR-SiRF Merger Pairs Struggling Bluetooth and GPS Powerhouses - and Shows Handset Platform Dominance

Merger plans recently announced by CSR (Cambridge Silicon Radio) plc and SiRF Technology Inc. connote more than the evolving fortunes and common future of a Cambridge, UK–based Bluetooth and WiFi provider and a San Jose, California GPS manufacturer.

It reaffirms the emergence of mobile phone handsets as a dominant location platform, the convergence of wireless communications and positioning at the chip level, and the trend toward absorption by semiconductor manufacturers of independent GPS technology providers who offer only single-frequency solutions.

Inside GNSS • January/February 2009

ICG-3: Friendly Persuasion

Sidebar: Program Updates

Representatives from the world’s GNSS and augmentation providers spent a sun-laden week in Pasadena, California, advancing aspirations for their separate enterprises while refining the basis for compatibility and interoperability among them.

Inside GNSS • January/February 2009

Autonomous Integrity

In trying to ensure integrity of GNSS navigation systems for civil aviation, various approaches have produced a range of different concepts, most of which assume the computation of a protection level. This computation is usually accomplished either autonomously (that is, entirely based on information gathered by the user receiver) or with some degree of external assistance.

Jammer Dectector
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