GPS Archives - Page 129 of 157 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

March 14, 2011

Japan Researchers Use GPS Permanent Array to Find Large Position Shifts From Devastating Earthquake

Based on data from Japan’s GPS Earth Observation Network System (GEONET), researchers at the Geospatial Information Authority of Japan (GSI) reported today (March 14, 2011) that the 9.0 magnitude Tohoku earthquake on March 11 in northeast Japan caused an estimated displacement of between roughly 6 and 28 meters along two fault blocks totaling nearly 400 kilometers (248 miles).

By Inside GNSS

The Civilian Battlefield

Figures 1 & 2

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

Growing dependence on GNSS for positioning, navigation, and timing (PNT) has raised a parallel concern about the potential risks of signal interference. The popular press has recently highlighted accounts of car thieves using GPS jammers, solar flares pumping out L-band radiation, and faulty television sets causing havoc to GPS receivers across an entire harbor.

By Inside GNSS

GPS Community Confronts LightSquared Move into L1 Spectrum

The GPS community is seething over a January 26 decision by the Federal Communications Commission (FCC) giving a conditional go ahead to a new broadband network with the potential to overwhelm GPS receivers across the country.

By Dee Ann Divis

March 12, 2011

ICG-6: Sixth Meeting of the International Committee on GNSS

The International Committee on GNSS (ICG), is a voluntary United Nations–backed association that brings together GNSS and augmentation providers — including the United States, Russia, European Union, China, India, and Japan — and associate members representing key user communities.

By Inside GNSS

Registration opens for 2011 GPS Partnership Council Meeting at Los Angeles AFB

A Coast Guard search and rescue helicopter demonstrates the use of GPS technology at a previous GPS Partnership Council meeting. (Photo: Joe Juarez)

Registration is now open for the 2011 GPS Partnership Council meeting on Tuesday, May 3 and Wednesday, May 4 at the Space and Missile Systems Center (SMC) at Los Angeles Air Force Base in El Segundo, California.

These military and industry networking meetings, now in their 11th year, are sponsored by the Los Angeles chapter of AFCEA (Armed Forces Communications Electronics Association) and the USAF GPS Directorate, formerly the GPS Wing.

By Inside GNSS

March 11, 2011

A “Tectonic Change” — Trimble VP Testifies at House Appropriations Subcommittee on GPS, LightSquared Controversy

U.S. Capitol rotunda. Photo: Architect of the Capitol

Space-Based PNT, National Executive Committee Public Release (March 14)

By Inside GNSS

GlobalGEO/ International Geomatic Week

Fira de Barcelona, Monjuic venue

The GlobalGEO Fair will take place in the Monjuic Venue, Hall 6 at Fira de Barcelona exhibition center in Barcelona, Spain from March 15 to March 17.

The fair features the latest products for GPS navigation, 3D mapping, geographic information systems, photogrammetry, teledetection, geodesics, topography, satellite navigation, intelligent transport systems and communications.

By Inside GNSS

March 10, 2011

“Save Our GPS” Group Forms to Confront LightSquared Transmitter Network

Aroused by the Federal Communication Commission’s (FCC’s) waiver of limits on ancillary terrestrial components (ATCs) for LightSquared’s proposed 40,000-transmitter network, representatives from a wide variety of industries and companies announced today (March 10, 2011) formation of the “Coalition to Save Our GPS.”

By Inside GNSS

Possible Compass Signal Specifications.jpg

March 2, 2011

Beihang Authors Suggest TMBOC Design for China’s Compass B1 Civil Signal

Despite the fact that China’s rapidly developing global navigation satellite system now has seven spacecraft in orbit intermittently broadcasting test signals, it is the only GNSS provider that has not yet published a draft version of its interface control document (ICD), although one has reportedly been completed for more than a year.

Against that background, any new source of information about the directions of the Compass design — official, semi-official, or other — draws special attention.

By Inside GNSS

February 27, 2011

LightSquared, GPS Industry Council Propose Process for Assessing GPS Interference Risks

Photo: Wikimedia Commons

Attorneys for LightSquared Subsidiary LLC submitted a proposed work plan on Friday (February 25, 2011) for analyzing potential interference to GPS devices. The plan, required by the FCC as a condition of its granting a waiver to its Ancillary Terrestrial Component (ATC) rule for mobile satellite services (MSS), proposes to establish a working group (WG) to study the GPS overload/desensitization.

By Inside GNSS

February 26, 2011

GPS Partnership Council Meeting 2011

Space and Missile Systems Center (LA AFB photo)

The 11th GPS Partnership Council meeting will take place on May 3 and 4, 2011 at the Space and Missile Systems Center (SMC) at Los Angeles Air Force Base in El Segundo, California. It is located about four miles south of the Los Angeles Airport.

These military and industry networking meetings are sponsored by the Los Angeles chapter of AFCEA (Armed Forces Communications Electronics Association) and the USAF GPS Wing.

This year’s theme is T "Executing Modernization… Enabling New Paths and Beyond."

By Inside GNSS

FCC Attacks GPS Jamming (They Don’t Mean LightSquared)

Now there’s irony for you.

By Inside GNSS

February 25, 2011

Russia Introduces New GLONASS Constellation Status Website

Home Page of New IAC Website

The Russian Federal Space Agency (Roscosmos) has launched a new version of its Information-Analytical Center (IAC) website, probably the best-known and most-used source for real-time information on the GLONASS constellation.

Currently operating in test mode, the site may be accessed at <http://new.glonass-iac.ru/en/index.php>. Among the new features of the IAC website are an interactive access to the GLONASS ftp-archive (the “Archive” section) and a new section with reference information (the “Guide”).

By Inside GNSS

GPS

EGNOS Activates Safety of Life Service...

Lockheed’s GPS III Team completes Key Flight Software Miles...

Japan Researchers Use GPS Permanent Array to Find Large Position Shifts From Devastating Earthquake

The Civilian Battlefield

GPS Community Confronts LightSquared Move into L1 Spectrum

ICG-6: Sixth Meeting of the International Committee on GNSS

Registration opens for 2011 GPS Partnership Council Meeting at Los Angeles AFB

A “Tectonic Change” — Trimble VP Testifies at House Appropriations Subcommittee on GPS, LightSquared Controversy

GlobalGEO/ International Geomatic Week

“Save Our GPS” Group Forms to Confront LightSquared Transmitter Network

Beihang Authors Suggest TMBOC Design for China’s Compass B1 Civil Signal

LightSquared, GPS Industry Council Propose Process for Assessing GPS Interference Risks

GPS Partnership Council Meeting 2011

FCC Attacks GPS Jamming (They Don’t Mean LightSquared)

Russia Introduces New GLONASS Constellation Status Website