GNSS (all systems) Archives - Page 114 of 159 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

Measuring Navigation Payload Absolute Delay

Figures and Tables

In satellite navigation, the user receiver finds its position by measuring its distance to satellites and knowledge of the satellite position. The distance is measured by ranging, i.e., finding the delay of the signal from the transmitter to the receiver. The delay will comprise of payload hardware delay and the geometric range delay. Hence, the payload delay of the signal from generation to radiation is very important and needs to be transmitted in navigation data.

By Inside GNSS

Redacted DHS Report Details Privacy Jammer Risks

Small GPS jammers, particularly the “personal privacy devices” readily available on the Internet, pose one of the greatest risks to the nation’s critical infrastructure, according to a now-public Homeland Security assessment.

By Dee Ann Divis

January 15, 2016

LightSquared Seeks FCC Approval for GPS ‘Coexistence’ Plan

Having settled its lawsuits against a trio of GPS receiver manufacturers, would-be broadband provider New LightSquared is now pointing to those settlements to support its assertion that it is fully addressing GPS interference issues.

By Inside GNSS

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January 14, 2016

ICG-11: International Committee on GNSS

Russia will host the eleventh meeting of the International Committee on GNSS (ICG) from November 6 to 11, 2016 in Sochi, on the Black Sea near Georgia. This meeting is organized by Roscosmos, the State Space Corporation. It will take place at the Pullman Sochi Center Hotel and Conference Center.

The 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.

By Inside GNSS

January 13, 2016

ICL-GNSS 2016: Localization and GNSS

The sixth international conference on localization and GNSS will take place at the Universitat Autònoma de Barcelona (UAB) – Casa Convalescència, a UNESCO site, on June 28, 29 and 30 in Barcelona, Spain.

ICL-GNSS covers recent research on terrestrial and satellite-based positioning techniques to provide reliable, accurate and low latency position information with the goal of inspiring new design, implementation, test and evaluation methodologies for positioning platforms.

By Inside GNSS

January 5, 2016

NavtechGPS Spring GPS/GNSS Training

NavtechGPS Spring GPS/GNSS Technical Training 2016 will take place March 14-18, at Crowne Plaza Redondo Beach Marina & Hotel in Redondo Beach, California, USA.

Registration information can be found here.

By Inside GNSS

December 29, 2015

FIG Working Week 2016

Earthquake recovery in Christchurch

The topic of the International Federation of Surveyors (FIG) working week 2016 is "Recovery from Disaster." It will take place at the Horncastle arena and Addington Events Centre in Christchurch, New Zealand from May 2 through May 6. Appropriately enough, Christchurch has deep familiarity with recovery from disaster after the 2010-11 earthquake sequence that took place there.

Abstract submissions are now closed.

By Inside GNSS

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December 28, 2015

InterGEO 2016

The 2016 InterGEO Trade Fair and Conference for Geodesy, Geoinformation and Land Management will take place at the fairgrounds —Hamburg Messe und Congress (HMC)—in Hamburg, Germany on October 11, 12 and 13.

Now 22 years old, the fair attracts 16,000 visitors from 92 countries who process, use or analyze geodata online or in the field.

The conference will cover the latest developments in surveying, geoinformation, remote sensing and photogrammetry and allied technologies. Proceedings are conducted in German and English.

By Inside GNSS

December 9, 2015

ION Southern California Section December Meeting

Torrance, CA

The Southern California Section of the Institute of Navigation’s December meeting will take place at the John Deere facility in Torrance, CA on December 15, 2015.

Dr. Chun Yang will speak at the meeting. The title of the talk is Sharpening Peak Performance of GPS Signals. In this talk, the variable IF tracking architecture that improves the
peak performance will be presented together with possible implementation
schemes. Simulation results will be used for illustration and analysis.

By Inside GNSS

December 5, 2015

Trans-Atlantic eLoran Joint Venture Seeks to Augment GNSS, Build Robust PNT

The founders of Chronos and UrsaNav announced a new collaboration yesterday (December 3, 2015) intended enhance the resilience and reliability of space-based positioning, navigation, and timing (PNT) services.

By Inside GNSS

November 30, 2015

GNSS Hotspots | November 2015

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859

1996 soccer game in the Midwest, (Rick Dikeman image)

Nouméa ground station after the flood

A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat

Bonus Hotspot: Naro Tartaruga AUV

Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)

“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto

The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.

Detail of Compass/ BeiDou2 system diagram

Hotspot 6: Beluga A300 600ST

1. DÉJÀ VU
Annapolis, Maryland and Kings Point, New York USA

By Inside GNSS

November 29, 2015

Failure to Communicate

For an organization with its name, the Federal Communications Commission (FCC) is a remarkably opaque public entity.

Such is the case with the agency’s inaction on requests by foreign GNSS services to waive the so-called FCC Part 25 rules that require licensing of non-Federal receive-only Earth stations (e.g., GNSS receivers) operating with non-U.S. licensed space stations (i.e., satellites).

Although at least one such request has reportedly been submitted, the FCC has not even acknowledged it, let alone moved to render a decision on the request.

By Inside GNSS

November 21, 2015

MMT 2015: The 9th International Symposium on Mobile Mapping Technology

Sunset in Sydney

The 9th International Symposium on Mobile Mapping Technology (MMT-2015) will take place from December 9 – 11, 2015 at The University of New South Wales in Sydney, Australia.

Online registration is available

By Inside GNSS