Galileo Archives - Page 30 of 71 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

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May 20, 2015

Estimating the Short-Term Stability of In-Orbit GNSS Clocks

Global navigation satellite systems provide position, velocity, and time (PVT) solutions to users whose receivers calculate position based on one-way ranging from satellites. As is well-understood, a key step in the positioning process involves a determination of the difference between the time of signal transmission identified in the satellite’s broadcast navigation message and the time of its reception by user equipment.

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By Inside GNSS
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Thinking Small

Equations 2, 7, 8, 9, 10 & 11

Unmanned aerial vehicles (UAV) are finding increased application in both domestic and governmental applications. Small UAVs (maximum take off weight less than 20 kilograms) comprise the category of the smallest and lightest platforms that also fly at lower altitudes (under less than 150 meters).

Designs for this class of device have focused on creating UAVs that can operate in urban canyons or even inside buildings, fly along hallways, and carry listening and recording devices, transmitters, or miniature TV cameras.

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By Inside GNSS
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Riding High with EGNOS

Riding High with EGNOS

The Pink City from up there. Photo by Peter Gutierrez

Judging from the variety of questions being asked at a recent EGNOS flight demonstration, the European Geostationary Navigation Overlay Service (EGNOS) remains something of a mystery for many of Europe’s leading aviation writers.

EGNOS, you say? What’s EGNOS?

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By Inside GNSS
Trimble Launches Multi-GNSS, Inertial Module and Enclosure

Trimble Launches Multi-GNSS, Inertial Module and Enclosure

Trimble’s BD935-INS (left) and BX-935-INS

Trimble has introduced the BD935-INS module that combines a multi-frequency, multi-GNSS receiver with an integrated 3-D microelectromechanical systems (MEMS) inertial sensor package.

As part of Trimble’s GNSS OEM portfolio, the new compact module augments real-time precise positioning with 3-D orientation, connectivity, and configuration capabilities designed to enable system integrators and OEMs to add GNSS and attitude to specialized or custom hardware solutions.

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By Inside GNSS
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Novatel Launches Multi-GNSS Wideband Antenna
April 23, 2015

Novatel Launches Multi-GNSS Wideband Antenna

NovAtel GPS-704-WB antenna

NovAtel Inc. today (April 23, 2015) launched the GPS-704-WB antenna, a wideband antenna that supports L-band as well as the frequencies of all current GNSS constellations (GPS, GLONASS, Galileo, and BeiDou), including B3 and E6 signals. Customers can use this antenna for GPS-only or multi-constellation applications, providing excellent flexibility for application developers, according to the company.

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By Inside GNSS
GNSS Markets, Standards, and Resilience at the European Navigation Conference
April 14, 2015

GNSS Markets, Standards, and Resilience at the European Navigation Conference

The 2015 edition of the European Navigation Conference (ENC) in Bordeaux last week found the continent’s GNSS community leaving troubles behind and looking to the future, where the world’s dependence on GNSS is greater, the risks higher, and the potential profits ever more tantalizing.
 
Speaking at the opening session dedicated to “the impact of GNSS on the economic sector,” Topos Cluster President Florence Ghiron answered the question in the simplest of terms: “We expect the GNSS market to grow and to include more and more industrial sectors.”
 

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By Inside GNSS
Successful Galileo FOC Launch Brings Relief to Europe’s GNSS Program
March 28, 2015

Successful Galileo FOC Launch Brings Relief to Europe’s GNSS Program

European space officials and engineering teams heaved a collective sigh of relief as the second attempt to launch a pair of full operational capability (FOC) Galileo satellites appears to have succeeded yesterday (March 27, 2015).

The EU’s Galileo satellite navigation system now has eight satellites in orbit, including four in-orbit validation (IOV) satellites launched in 2011 and 2012 and the first two FOC spacecraft placed into an anomalous orbit last August.

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By Inside GNSS
GSA’s GNSS Market Report #4: The Most Thorough Yet
March 25, 2015

GSA’s GNSS Market Report #4: The Most Thorough Yet

The European GNSS Agency (GSA) unveiled its latest GNSS Market Report today (March 25, 2015) at the Munich Satellite Navigation Summit in Germany.

The fourth and most comprehensive in a series of GSA studies, the 80-page report describes current and projected GNSS receiver sales by volume and value and highlights market opportunities, technology trends, and future developments of GNSS.

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By Inside GNSS
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