GPS

Three GPS Satellites Moved Into New Positions for More Robust, Accurate Signals

Three GPS Satellites Moved Into New Positions for More Robust, Accurate Signals

(Update June 15, 2011 Inside GNSS) Completion of Satellite Repositioing Optimizes GPS Constellation

By next June, the United States GPS constellation will attain the most optimal geometry in its nearly 33-year history. Over time, that means a more robust signal, more accuracy and more reliability in GPS-challenged environments.

The 50th Space Wing is in the middle of maneuvering six GPS satellites into more favorable positions. The two-phase operation, called "Expandable-24"  is halfway to completion.

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By Inside GNSS
2011 Space Weather Workshop
January 17, 2011

2011 Space Weather Workshop

Forecasters at NOAA’s Space Weather Prediction Center (NOAA photo)

The annual Space Weather Workshop will take place on April 26-29 2011 in Boulder, Colorado.

Program organizers call it the "meeting of science, research, applications, operations and users." The program highlights space weather impacts in several areas, including
communications, navigation, spacecraft operations, aviation, and
electric power. 

Recent progress in large-scale modeling efforts will
be featured; while new developments in Sun-to-Earth coupled modeling systems
will also be a highlight.

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By Inside GNSS
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2011 West Coast Seminars: NavTech GPS
January 8, 2011

2011 West Coast Seminars: NavTech GPS

NavTech GPS will offer its 2011 west coast GNSS technical seminars at the Doubletree Hotel in San Diego, California from Monday, March 28 through Friday, April 1.

Over 25 years, NavTech GPS has provided GPS/GNSS applications solutions for military and research customers, with product choices from more than 30 manufacturers, and has organized basic and advanced GNSS seminars for engineers and technical professionals all over the United States.

The San Diego seminars include:

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By Inside GNSS
GPS Programs Push Ahead
January 4, 2011

GPS Programs Push Ahead

The GPS program continues progress on several fronts — in space and on the ground.

During fall 2010, the U.S. Air Force and the Raytheon Company team developing the GPS Advanced Control Segment (OCX) successfully carried out an integrated baseline review (IBR) for the next-generation system on schedule.

When completed in 2015 under the current schedule, GPS OCX will deliver control segment enhancements designed to provide secure, accurate and reliable navigation and timing information to military, commercial and civil users.

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By Inside GNSS
GPS Directorate Completes Annual AGER Review
December 30, 2010

GPS Directorate Completes Annual AGER Review

Col. Bernard Gruber

The GPS Directorate completed its second Annual GPS Enterprise Review (AGER) on December 17, concluding that the program has achieved major milestones in developing and deploying modernized GPS capabilities.

Col. Bernard Gruber, GPS program director at the Space and Missile Systems Center, Los Angeles Air Force Base, led his team through a Defense Acquisition Board (DAB) review chaired by Frank Kendall, deputy undersecretary of defense for acquisition, technology and logistics, and attended by other senior Department of Defense (DoD) officials.

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By Inside GNSS
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GMV Will Launch Fully Hosted Software GPS Receiver at Mobile World Congress
December 22, 2010

GMV Will Launch Fully Hosted Software GPS Receiver at Mobile World Congress

GMV will launch the SRX-10, a software GPS receiver for mass-market applications, at this year’s GSMA Mobile World Congress, scheduled February 14–17 in Barcelona, Spain.

As a fully hosted solution, all SRX-10 receiver functions — even signal acquisition and tracking — can be hosted on a general purpose CPU with only the requirement of adding on a low cost RF front-end, according to the company.
The company cites other benefits offered by its new software receiver, particularly its substantial flexibility and upgradeability.

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By Inside GNSS
ION GNSS 2011: 24th Institute of Navigation GNSS Conference
December 15, 2010

ION GNSS 2011: 24th Institute of Navigation GNSS Conference

Portland waterfront walk, west side

ION GNSS 2011 will take place at the Oregon Convention Center in Portland, Oregon from September 20-23. Tutorials will be held on September 19 and 20.

This will be the 24th international technical meeting of the Satellite Division of the Institute of Navigation. It is the world’s largest and oldest GNSS conference,
founded in 1987 as the ION GPS conference.

The headquarters hotel is Portland’s downtown Hilton and Executive Tower.

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By Inside GNSS
Tracking Santa and Father Frost: GPS or GLONASS
December 1, 2010

Tracking Santa and Father Frost: GPS or GLONASS

GLONASS Tracks Father Frost

As GLONASS approaches completion, it’s no surprise that the Russian counterpart to GPS has gotten into more popular applications of GNSS technology — even Santa-tracking.

For more than 50 years, the North American Air Defense Command (NORAD) has followed the travels of the Christmas gift-bearer from his North Pole headquarters. The Santa-tracking operation can be viewed online.

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By Inside GNSS
GPS Satellite Number 23 is 20 Years Old - And Counting
November 30, 2010

GPS Satellite Number 23 is 20 Years Old – And Counting

(From top) GPS Block I, Block IA, Block II, Block IIA

A 20-year-old GPS Block IIA satellite designated as space vehicle number 23 (SVN23) is setting new records in longevity among the durable spacecraft of the Global Positioning System.

Built by Boeing (formerly Rockwell Corporation) and launched on November 26, 1990, SVN23 has operated longer than any other GPS satellites — far exceeding its design life of 7.5 years.  Set healthy shortly after launch for navigation and timing use, the GPS Directorate (formerly GPS Wing) at Los Angeles Air Force Base predicts that the satellite will last another 12–18 months.

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By Inside GNSS
United States Appeals Courts Disagree on GPS Technology and Privacy Rights

United States Appeals Courts Disagree on GPS Technology and Privacy Rights

District of Columbia Court of Appeals in Washington D.C., USA

Secret tracking using GPS may be simple, undetectable and cheap — but appeals courts can’t decide if it’s constitutional.

In 1791, when the Fourth Amendment to the United States Constitution was ratified, it certainly seemed specific enough for the needs of the time. The new Americans were tired of colonial powers freely searching and seizing, with general warrants that were as full of holes as Swiss cheese.

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By Inside GNSS
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