Galileo Archives - Page 31 of 71 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

Galileo

March 14, 2015

GNSS Hotspots | March 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. NAVSTAR GETS THE AX
Seal Beach, California

Read More >

By Inside GNSS

GNSS and Precision Farming

Dr. John Fulton, Ohio State University

Nowhere has the fact that GNSS can guide things besides military weapons and transport manifested itself more profoundly than in agriculture.

While Google and automotive manufacturers struggle to figure out how to put autonomous vehicles on the highway, farmers have been using GNSS for well over a decade to guide equipment through their fields — along with a host of other ag-related, site-specific applications.

Indeed, GNSS — along with an array of other high-tech resources — is transforming agriculture at an accelerating rate.

Read More >

By Inside GNSS
[uam_ad id="183541"]

How does a GNSS receiver estimate velocity?

Equations 1 – 11

Q: How does a GNSS receiver estimate velocity?

A: Stand-alone single-frequency GNSS receivers represent the largest slice of the commercial positioning market. Such receivers operate mainly in single point position (SPP) mode and estimate velocity either by differencing two consecutive positions (i.e., approximating the derivative of user position) or by using Doppler measurements related to user-satellite motion.

Read More >

By Inside GNSS

Seriously Seeking a Galileo Service Operator

Carlo des Dorides, El?bieta Bie?kowska

Last January, the European GNSS Agency (GSA) announced a new invitation to tender for the role of Galileo service operator (GSOp). Speaking at the recent EU Space Policy Conference in Brussels, GSA Executive Director Carlo des Dorides called it the largest contract ever to be awarded under the Galileo program.

“It will shape the future of Galileo,” he said.

Read More >

By Peter Gutierrez

Expanding EGNOS Horizons

GPS+EGNOS tracking device able to use EGNOS OS and EDAS mounted on a container

The European Geostationary Navigation Overlay Service (EGNOS) has a European regional coverage that could be extended quite easily to areas adjacent to the European Union. Backed by the European Commission, a public/private consortium is operating programs of technical assistance to prepare nations in the Mediterranean region to adopt and exploit European GNSS services in their priority market segments, namely aviation and road freight transport/logistics.

Read More >

By Inside GNSS
[uam_ad id="183541"]
March 5, 2015

UAV Want List (with GNSS Already on Board): A Coherent Regulatory Framework for Europe

Chris Blackford of Sky-Futures speaking at AUVSI’s Unmanned Systems Europe 2015. Peter Gutierrez photo

Just as you do when you get in your car, the UAS, UAV, drone, RPAS and even ROAV communities — who probably need to agree on an acronym — are beginning to take GNSS for granted. But presenters at the AUVSI Unmanned Systems Europe 2015 conference held Tuesday and Wednesday (March 3–4, 2015) in Brussels had little to say on the subject, to our great disappointment, even though virtually all of the vehicle/vessel systems under discussion use it and need it.

Read More >

By Inside GNSS

Simulator Manufacturer Flags Leap Second Issue

Graph showing the difference between UT1 and UTC. Vertical segments correspond to leap seconds. Source: Wikimedia Commons

Differences between BeiDou and GPS and Galileo in designation of a “day number” for the date of applying leap second later this year could cause problems for GNSS receiver manufacturers, according to UK-based simulator provider Racelogic.

Read More >

By Inside GNSS
February 27, 2015

FCC Issues New Rules on E911 Location Standards, Options Besides GNSS

New rules recently adopted by the Federal Communications Commission (FCC) to help emergency responders better locate wireless 911 callers highlight the role of GPS and GNSS technologies while boosting the use of alternative positioning technologies in indoor locations.

However, the new enhanced (11 (E911) rules, adopted January 29 and published on February 4, explicitly avoided a decision on the use of GNSS systems other than GPS.

Read More >

By Inside GNSS

GNSS Vulnerability Scores at Wide-Ranging INC 2015

Ray Clore, U.S. State Department. Peter Gutierrez photo

Almost half of the sessions at the International Navigation Conference (INC) 2015 held this week (February 24–26) in Manchester, England, were devoted to the theme of GNSS resilience and vulnerability, a topic that Dana Goward of the Resilient Navigation and Timing Foundation has been trying to drive home for years.

Read More >

By Inside GNSS
1 29 30 31 32 33 71
IGM_e-news_subscribe