Uncategorized Archives - Page 17 of 82 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

November 19, 2015

Code Shift Keying

Equations 1 – 10

The constant growth and evolution of the positioning, navigation, and timing (PNT) market generate demands for more and more added-value applications and services relying on GNSS signals, with expectations for improved accuracy and availability. Some services may also rely on added-value content other than navigation messages, for example, higher data volume with less latency, such as the data carried by satellite-based augmentation system (SBAS) services and the Galileo Commercial Service.

By Günter W. Hein

How Important Is It to Synchronize the Code and Phase Measurements of a GNSS Receiver?

Q: How Important Is It to Synchronize the Code and Phase Measurements of a GNSS Receiver?

A: Precise timing lies at the heart of GNSS implementation and operation and is generally well understood in terms of synchronizing individual satellites and/or receivers. Recent results, however, have demonstrated that timing of code and phase measurements in a receiver can have significant implications for the timing community in particular.

By Inside GNSS

International Navigation Gathering Highlights GNSS Advances, Distractions

Speakers at the low-in-profile but high-in-content International Association of Institutes of Navigation (IAIN) conference in Prague this year threw into stark relief some of the big GNSS programs and even bigger GNSS questions.

By Peter Gutierrez

[uam_ad id="183541"]

Stuart Riley: Right Turn from the Wrong Path

Stuart Riley’s Compass Points

Stuart Riley was born and raised in Nottingham, England, where some of the crucial crossroads in his career appeared quite early.

One such inflection point came when he was just 10 or 11, and it involved a birthday present from his sister, Alison.

By Inside GNSS

eCall

Figures 1 & 2

On April 28, 2015, the European Parliament voted in favor of an eCall regulation, which requires all new models of passenger cars and light vans that will be certified for the European market to be equipped with the automated emergency-call technology beginning in April 2018. The measure applies to all such vehicles regardless of selling price. In the future, a similar service may be implemented for trucks as well.

By Inside GNSS

November 18, 2015

International Navigation Forum / Navitech 2016

Moscow in Spring

The 10th International Navigation Forum will take place during the 8th International Navitech Exhibition at the Expocentre Fairgrounds in Moscow, Russia on May 10-13, 2016.

Registration information can be found here.

By Inside GNSS

November 16, 2015

State of Play in the European Union

Global navigation satellite systems have become core elements of the global economy. Essential for many civilian applications and innovations, GNSS brings rapidly growing economic benefits due to convergence of GNSS with smartphones, geospatial data, unmanned aerial vehicles, automated driving systems and other commercial technologies.

By Ingo Baumann

[uam_ad id="183541"]

September 15, 2015

GNSS Hotspots | September 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.