A: System Categories

When GNSS Goes Blind
September 7, 2010

When GNSS Goes Blind

A completely GPS-based navigation solution is generally not feasible in GNSS signal–challenged environments such as urban canyons. However, even in these difficult environments a partial set of GPS signal measurements may still be available. For instance, one or two satellites are generally still visible even in dense urban canyons.

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By Inside GNSS
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NaviForum Shanghai 2010

NaviForum Shanghai 2010

A close brush by a passing typhoon on its opening day aside, NaviForum Shanghai 2010 mustered an impressive slate of senior executives from Chinese companies working in the navigation and telematics/location based services (LBS) field.

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By Inside GNSS
GLONASS-M Satellite Launch Highlights Ambitious Promotion of Russia's Revitalized GNSS
August 27, 2010

GLONASS-M Satellite Launch Highlights Ambitious Promotion of Russia’s Revitalized GNSS

GLONASS-M satellite. Figure/photo, JSC “Academician M.F. Reshetnev “Information Satellite Systems”

A Proton-M carrier rocket successfully launched three GLONASS-M satellites into orbit early this morning (September 2, 2010, Moscow time) from the Baiknour space center in Kazakhstan. Another launch on November 30 will send three more M-type satellites into orbit, and the first GLONASS-K is scheduled to go up on December 25.

The imminent completion of a full constellation by the end of the year is accompanied by a vigorous policy initiative to promote Russia’s revitalized GNSS.

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By Inside GNSS
SVN62, the First GPS IIF Satellite, Is Set Healthy

SVN62, the First GPS IIF Satellite, Is Set Healthy

SVN62 launch (ULA)

The U.S. Air Force declared the first GPS Block IIF satellite (SVN62) operational today (August 27, 2010), changing the spacecraft’s navigation signal status to healthy at about 10:10 a.m. (EDT or 4:10 a.m. UTC). 

Launched May 28, the satellite became the responsibility of the USAF 50th Space Wing on August 26,

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By Inside GNSS
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Applanix Releases Updated POS for Land Vehicles

Applanix Releases Updated POS for Land Vehicles

Applanix recently released Version 5 of its Position and Orientation System for Land Vehicles (POS LV).

According to the company, the system uses integrated inertial technology and is designed to generate stable, reliable and repeatable positioning solutions for land-based vehicle applications such as road geometry, pavement inspection, GIS database and asset management, road surveying and vehicle dynamics. The company says the unit is designed to operate under the most difficult GPS conditions in urban and suburban environments.

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By Inside GNSS
CDR Passed: GPS III Ready for Build Phase
August 24, 2010

CDR Passed: GPS III Ready for Build Phase

Artist’s rendering of GPS III satellite. Lockheed Martin image

More than two years into a multi-billion-dollar contract, the Lockheed Martin team developing the U.S. Air Force’s next-generation GPS Block III satellites continues to defy the physics of large aerospace programs by successfully completing the program’s Critical Design Review (CDR) phase last week — two months ahead of the baseline schedule.

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By Inside GNSS
Air Force Approves 3 GPS Technical Specs
August 19, 2010

Air Force Approves 3 GPS Technical Specs

The GPS Wing has authorized publication of three technical documents with updated specifications for the U.S. Global Positioning System, including the next-generation GPS Block IIIA satellites now in development, the L5 radio link, and the new L1 civil signal  (L1C) that will be available with the GPS III spacecraft.

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By Inside GNSS
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