SBAS and RNSS

GAGAN Delayed Again
April 17, 2010

GAGAN Delayed Again

ISRO GSAT-4 satellite

India’s first GPS/SBAS payload, the GAGAN (GPS-Aided Geo-Augmented Navigation system) transmitter on the GSAT-4 geostationary satellite, disappeared into the Bay of Bengal on April 15 when its ill-fated GSLV-D3 launch vehicle veered off course.

The Indian Space Research Organization’s GSAT-4 satellite carried a communication payload of multi-beam Ka-band pipe and regenerative transponder and a navigation payload in C, L1 and L5 bands.

A key part of India’s GPS augmentation plan, the failure will further delay civil aviation modernization.

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By Inside GNSS
FAA Predicts Erosion of GPS WAAS Service Due to Intelsat GEO Failure
April 13, 2010

FAA Predicts Erosion of GPS WAAS Service Due to Intelsat GEO Failure

Galaxy 15 satellite under construction. Orbital Sciences photo

[updated April 13] Federal Aviation Administration (FAA) officials say that loss of control over an Intelsat geostationary (GEO) carrying a GPS Wide Area Augmentation System (WAAS) transponder could subject users in the National Air Space (NAS) to temporary outages for the rest of this year, beginning within the next two to four weeks as the GEO drifts out of a useable orbit.

Intelsat S.A. announced the anomaly in Galaxy 15 (G-15) on April 8. Although the communications services provided by G-15, located at 133 degrees west longitude (WL), have not been affected, according to Intelsat, the satellite apparently is not responding to commands by controllers. The anomalous condition began on April 3, according to the FAA.

The Luxembourg-based Intelsat is moving an older spacecraft (G-12) that serves as a backup for G-15 from its location at 123 degrees WL. However, G-12 does not have an L-band transponder, which is needed for WAAS transmissions.

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By Inside GNSS
Canada to Decommission DGPS System
April 9, 2010

Canada to Decommission DGPS System

CDGPS coverage map. NRCan image

The Canada-wide DGPS Service (CDGPS), a free GNSS augmentation system initiated by the Canadian Council on Geomatics (CCOG) in 2003, will be decommissioned by March 31, 2011, according to Gary Sawayama, the system’s general manager.

The CDGPS L-band broadcast has been carried by SkyTerra Communications Inc.’s MSAT communications satellites, which are expected to be replaced this year by the next-generation SkyTerra satellites. Significant new investment in infrastructural changes would be required to migrate to a new communication satellite.

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By Inside GNSS
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2010 Indoor Positioning and Indoor Navigation (PIN)
March 30, 2010

2010 Indoor Positioning and Indoor Navigation (PIN)

“Science City” campus of ETH, Zurich

The International 2010 PIN Conference and industry exhibition will take place at the Swiss Federal Institute of Technology (ETH) in Campus Science City (Hoenggerberg), Zurich, Switzerland from September 15 to 17 2010.

Organizers call it the largest meeting dedicated entirely to indoor positioning, with 196 announced abstracts from 36 countries.

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By Inside GNSS
NAVSUP 2010: Polish Navigation Forum
March 29, 2010

NAVSUP 2010: Polish Navigation Forum

The 17th conference on "The Role of Navigation in Support of Human Activity" will be held in Gdynia, Poland from September 23 to 25 2010. An industry exhibition is part of the event.

The conference will cover the latest developments in navigation and positioning on the water, on land and in the air.

The event targets scientists, engineers from Poland and Europe.

May 15 2010 is the deadline for applications and submission of abstracts.

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By Inside GNSS
European GNSS Supervisory Authority Launches EGNOS Portal

European GNSS Supervisory Authority Launches EGNOS Portal

A DGAC ATR42 test aircraft lands at Limoges airport during EGNOS trials. (ESA photo)

The European GNSS Supervisory Authority (GSA), on behalf of the European Commission, has launched an Internet portal for the European Geostationary Navigation Overlay Service (EGNOS) designed to help developers and entrepreneurs vying for a slice of the emerging satellite navigation market.

The European counterpart to the U.S. GPS Wide Area Augmentation System (WAAS), EGNOS is a satellite-based augmentation system that provides real-time differential corrections and integrity information about GPS operations.

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By Inside GNSS
5th ESA Workshop on Satellite Navigation Technologies (NAVITEC)

5th ESA Workshop on Satellite Navigation Technologies (NAVITEC)

"Multi-GNSS Navigation Technologies: The Beginning of a New Age" is the theme of the 5th ESA Workshop on Satellite Navigation Technologies.

In addition to multi-GNSS issues, the event will focus on signal design, signal processing, GNSS payload technology effects and integration of navigation technologies with communication services.

The European Space Agency event will be held from December 8 to 10, 2010 at ESTEC, Noordwijk, Netherlands.

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By Inside GNSS
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Russia to Put 8 CDMA Signals on 4 GLONASS Frequencies
March 18, 2010

Russia to Put 8 CDMA Signals on 4 GLONASS Frequencies

Prof. Grigoriy Stupak. JPL/IGS photo

[Corrected March 20] Russia is “close to completion” of a coordination plan for the “whole set of GLONASS signals” that will include eight different CDMA signals on four frequencies, according to Prof. Grigoriy Stupak, deputy director general of the Russian Institute of Space Device Engineering (RISDE) and the general designer for the GLONASS system.

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By Inside GNSS
Sampler Plate from Munich Summit
March 9, 2010

Sampler Plate from Munich Summit

Tony Russo, U.S. National Office for Space-Based PNT

Ah, another Munich Summit plenary session filled with many already-knowns and former unknowns, the latter mostly conveyed in nuances and bon mots.

More about that in news reportage to come.

But in the event’s venue, a recently restored All-Saints Church under der Residenz, the speakers may have felt a little lingering moral pressure to tell the truth. So, a sampler plate of comments may be in order.

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By Inside GNSS
2010 International Symposium on GPS/GNSS
February 24, 2010

2010 International Symposium on GPS/GNSS

The theme of the 2010 International Symposium on GPS/GNSS is "At a Turning Point." It will take place at Howard International House in Taipei, Taiwan on October 26-28.

National Cheng Kung University is organizing and hosting the event. The symposium will be held in English.

The annual forum is open to innovative ideas on GNSS systems, techniques, applications and opportunities by researchers and engineers from academia and industry.

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By Inside GNSS
JAXA Gives QZSS Satellite a Nickname - “Michibiki"
February 3, 2010

JAXA Gives QZSS Satellite a Nickname – “Michibiki”

Quasi-Zenith satellite orbit

The Japanese Space Agency has selected a nickname for its first GNSS satellite: “Michibiki.”  JAXA received more than 11,000 entries in its recent contest to raise national awareness of the GPS augmentation program.

The first of three Quasi-Zenith satellites will launch during the Japanese 2010 fiscal year, sometime before March 31, 2011. 

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By Inside GNSS
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