GNSS (all systems) Archives - Page 130 of 165 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

January 19, 2014

Ionospheric Scintillation

Ionospheric scintillations are rapid temporal fluctuations in both amplitude and phase of trans-ionospheric GNSS signals caused by the scattering of irregularities in the distribution of electrons encountered along the radio propagation path. The occurrence of scintillation has large day-to-day variability. The most severe scintillations are observed near the poles (at auroral latitudes) and near the equator (within ± 20 degrees of geomagnetic equator).

By Inside GNSS

Proposal for U.S. eLoran Service Gains Ground

Trying to revive a years-dead federal program is usually the kind of hopeless task that even Sisyphus wouldn’t touch.

But determined supporters of eLoran are gaining ground in their effort to resurrect the cancelled radio-navigation network and, propelled by new worries over GPS jamming, they appear poised push the issue through.

By Dee Ann Divis

Reaching for the STARx

GNSS modernization includes not only the global coverage capabilities of GPS, GLONASS, Galileo, and BeiDou, but also regional GNSS enhancement systems such as Japan’s Quasi-Zenith Satellite System (QZSS), the Indian Regional Navigation Satellite System (IRNSS), and the European Geostationary Navigation Overlay Service (EGNOS).

By Inside GNSS

IGS-MGEX

By Inside GNSS

January 11, 2014

2014 Geospatial World Forum

The Geospatial World Forum and industry exhibition will be held at the Centre International de Conférences Genève (CICG), Geneva, Switzerland on May 5-9, 2014.

The call for abstracts has closed. Early registration is open until February 15, late registration will be from February 16 to April 25. Spot registration is available after April 25.

This year’s theme is "geoSMART Planet: Resources + Infrastructure & YOU!" Program highlights include:

By Inside GNSS

January 6, 2014

Enhanced Differential Loran Maritime Trials in The Netherlands Declared Successful

The Dutch Pilots Corporation and Reelektronika announced today (January 7, 2014) the successful development and test of an Enhanced Differential Loran (eDLoran) backup to GNSS in The Netherlands.

Trials at sea and in the Rotterdam Europort harbor area met the requirement for absolute accuracies in the five-meter range, according to Durk van Willigen, CEO of Reelektronika, and Wim van Buuren, Loodswezen’s information & communications technology (ICT) and innovation manager and board member.

By Inside GNSS

December 18, 2013

Difficult Task: Placing an Economic Value on GPS

The nation’s leading GPS experts are struggling to quantify how the world’s premier navigation and timing system affects the U.S. economy, an effort critical to building a political firewall around GPS spectrum in the face of ballooning demand for broadband capacity.

By Inside GNSS

December 17, 2013

GPS-Aided Crowdshipping: TwedEx and Deliv

Crowdsourcing has gained some attention in the GNSS community as a means for detecting and mitigating RF interference and signal spoofing.

In the past year, researchers and commercial ventures have developed ways to take advantage of the GNSS-derived knowledge of real-time location of participants to create ad hoc networks of couriers.

By Inside GNSS

December 16, 2013

Russians Consider IGS as Congress Moves to Limit GLONASS, Foreign GNSS Monitoring Stations on U.S. Soil

Lawmakers are poised to sharply limit the ability of foreign nations to own or control satellite system monitoring stations on U.S. territory, a rare show of congressional cooperation triggered by a Russian request to place stations supporting its satellite navigation system on American soil.

By Inside GNSS

December 12, 2013

International IEEE Workshop on Asia-Pacific Satellite Navigation and Positioning, Call for Abstracts

The International IEEE Workshop on Asia-Pacific Satellite Navigation and Positioning will be held at CSIRO Centre for Advanced Technologies,
Pullenvale, outside Brisbane, Australia on February 27 to March 1, 2014.

The deadlines for abstract submission and registration are both January 30, 2014.

By Inside GNSS

November 30, 2013

GNSS Hotspots | November 2013

1. PAPER, PLEASE.
Silver Spring, Maryland USA
√ The USA will stop printing nautical charts next April, the end of a 150 year tradition. Why? “Declining demand, electronic and digital charts and federal budget realities,” said NOAA’s Office of Coast Survey. They will maintain and update PDFs of more than a thousand coastal charts and refer those who admire traditional lithography to private printers who can do the job.

By Inside GNSS

Elizabeth Rooney’s Compass Points

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GNSS event that most signified to you that GNSS had “arrived”

Two events stand out:

By Inside GNSS

November 18, 2013

Elizabeth Rooney: ‘Not a typical job for most working mums.’

SIDEBAR: Elizabeth Rooney’s Compass Points

Going for her first big job interview after college, Elizabeth Rooney admits she didn’t know what GPS was.

“It was 1995,” she says, “and I was going in to see about this job. I had been looking at some literature from the company I was interviewing with, and there it was, ‘GPS.’ I wondered what the letters meant when I saw them.”

By Inside GNSS

GNSS (all systems)

GNSS Hotspots | January 2014...

Multi-GNSS Monitoring...

Ionospheric Scintillation

Proposal for U.S. eLoran Service Gains Ground

Reaching for the STARx

IGS-MGEX

2014 Geospatial World Forum

Enhanced Differential Loran Maritime Trials in The Netherlands Declared Successful

Difficult Task: Placing an Economic Value on GPS

GPS-Aided Crowdshipping: TwedEx and Deliv

Russians Consider IGS as Congress Moves to Limit GLONASS, Foreign GNSS Monitoring Stations on U.S. Soil

International IEEE Workshop on Asia-Pacific Satellite Navigation and Positioning, Call for Abstracts

GNSS Hotspots | November 2013

Elizabeth Rooney’s Compass Points

Elizabeth Rooney: ‘Not a typical job for most working mums.’