GPS Archives - Page 111 of 136 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

September 10, 2010

Oregon: More GPS Product Design and GNSS-related Industry Here Than You May Think

The Portland skyline with a GPSIIF satellite is featured in the Inside GNSS booth at ION GNSS 2010

by Glen Gibbons

Few would mistake Oregon for the beating heart of GNSS. Still, for a medium-sized U.S. metro area in the Pacific Northwest, Portland and Oregon’s I-5 corridor has enough relevant involvement with the industry to justify hosting the Institute of Navigation’s 2010 GNSS conference and exhibition.

Oregon has FLIR Systems, Cloud Cap Technology, TriQuint, Intel, Garmin and Inside GNSS magazine.

By Inside GNSS

September 9, 2010

NaviForum Shanghai: U.S. Seeks Bilateral Talks with China on GNSS

Anthony Russo, director of the U.S. National Coordination Office (NCO) for Space-Based Positioning, Navigation, and Timing (PNT)

The United States brought a strong message that it is pursuing a new direction in GNSS relations with China in presentations at the 2010 NaviForum in Shanghai last week.

By Inside GNSS

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.

By Inside GNSS

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September 4, 2010

U.S. Space Lead Slipping, New Report Says

The United States remains the current leader in space competitiveness, but its relative position is eroding in the face of increased funding, streamlined policy, and industrial improvements in other space-faring nations.

By Inside GNSS

August 27, 2010

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,

By Inside GNSS

IS-GPS-200E: Flexing Power and Fixing Phrase Ambiguities

High-precision users of GNSS are used to solving for carrier phase integer ambiguities, but the recent publication of a GPS technical document has fixed a different kind of phase ambiguity — a linguistic one

By Inside GNSS

August 26, 2010

Rockwell Delivers First GB-GRAM-M Prototypes to GPS Wing

GB-GRAM-M (GPS Wing)

Rockwell Collins has delivered 21 prototype Ground-Based GPS Receiver Application Module Modernized (GB-GRAM-M) receivers that the Cedar Rapids, Iowa– headquartered company developed under the GPS Wing’s receiver card development program.

By Inside GNSS

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Hemisphere GPS Announces Earthworks X300 Excavator, Partners to Provide Customized Outback S3

Hemisphere GPS has signed a multi-year exclusive agreement to supply the S3-S Navigator — a customized Outback S3 precision guidance system — for Summit Liability Solutions. Both companies are based in Calgary, Alberta, Canada.

By Inside GNSS

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.

By Inside GNSS

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.

By Inside GNSS

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.

By Inside GNSS

August 18, 2010

High-Integrity Global Positioning at Issue as Congress Works Through 2011 GPS Funding

GPS-related procurement and development items in President Obama’s proposed budget for fiscal year 2011 are moving through Capitol Hill, but not without contention. At issue is Obama’s request for $40.9 million for the High-Integrity Global Position System (HIGPS, also known as iGPS).

By Inside GNSS

August 17, 2010

GPS IIF-1 Satellite

FIGURE 1: Geographical overview of the 170 IGS stations tracking SVN62/PRN25 during its current 90-day checkout period. The blue curve illustrates the ground track of the spacecraft on August 9, 2010.

For the complete story, including figures, graphs, and images, please download the PDF of the article, above.

On May 27, 2010, the U.S. Air Force successfully launched the first satellite of the Block II “follow-on” (Block IIF) series, the fourth generation of GPS spacecraft that features more precise and powerful signals, an extended design life, and several other technical advances.

By Inside GNSS

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Oregon: More GPS Product Design and GNSS-related Industry Here Than You May Think

NaviForum Shanghai: U.S. Seeks Bilateral Talks with China on GNSS

When GNSS Goes Blind

U.S. Space Lead Slipping, New Report Says

SVN62, the First GPS IIF Satellite, Is Set Healthy

IS-GPS-200E: Flexing Power and Fixing Phrase Ambiguities

Rockwell Delivers First GB-GRAM-M Prototypes to GPS Wing

Hemisphere GPS Announces Earthworks X300 Excavator, Partners to Provide Customized Outback S3

Applanix Releases Updated POS for Land Vehicles

CDR Passed: GPS III Ready for Build Phase

Air Force Approves 3 GPS Technical Specs

High-Integrity Global Positioning at Issue as Congress Works Through 2011 GPS Funding

GPS IIF-1 Satellite