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Galileo: Coping with Change, China, and Challenges

The 14-year (and counting) history of Europe’s Galileo program has always made for a complex story line.

And it’s not getting any simpler.

Among the latest complications: the transition of responsibilities from the Galileo Joint Undertaking (GJU) to a new GNSS Supervisory Authority (GSA, also referred to as the Galileo Supervisory Authority), further extension of negotiations over a long-term concession contract to operate Galileo, and growing pressure from commercial companies to allow them to sell Galileo technology that they have developed or want to develop.

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By Inside GNSS
September 1, 2006

USAF Announces More IIF Delay

The GPS Block IIF program continues to lose ground, with first launch of a satellite now projected as no sooner than May 2008 and as late as January 2009 in a “worst case,” scenario, according to the U.S. Air Force. Program costs are also increasing.

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By Inside GNSS
May 1, 2006

Civil L1 Signals: Galileo ICD, GPS L1C, New MBOC

Within weeks of a bilateral working group’s recommendation for a common civil GNSS signal design, the European Galileo and U.S. GPS programs have filed draft interface specifications (IS) or interface control documents (ICDs) for the new signals planned for the L1 frequency (around 1575 MHZ).

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By Inside GNSS

GPS L2C is on the air

Civil GPS users now have a second full signal available to them — albeit on only one satellite and “at the user’s own risk” — courtesy of the first modernized Block IIR (IIR- 14M) spacecraft launched last September. And the world’s geodetic community is already moving to take advantage of it with announcement of an addendum to the receiver autonomous exchange (RINEX) format used to combine high-precision position data from different types of GPS receivers.

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By Inside GNSS
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