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Inside GNSS • May/June 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.

Inside GNSS • May/June 2015

Thinking Small

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.

May 18, 2015

CSNC 2015 Raises BeiDou, GNSS Profile in China

More than 3,000 delegates converged on China’s ancient capital of Xi’an last week to infuse the sixth China Satellite Navigation Conference (CSNC) with an energy reflecting the nation’s robust GNSS program.

May 18, 2015

Riding High with EGNOS

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?

May 7, 2015

International Working Group Agrees on Common GNSS SBAS Message Design

The next decade’s aircraft pilots will be able to rely on enhanced, reliable GNSS satellite navigation signals on a seamless basis across much of the world, thanks to decisions made at the latest gathering of worldwide GNSS augmentation system providers and experts.

May 7, 2015

Trimble Launches Multi-GNSS, Inertial Module and Enclosure

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.

May 12, 2015 - May 13, 2015
Hyattsville, Maryland, U.S.A.
April 28, 2015

Registration Still Open for ESA’s GNSS Summer School

Registrations are still available for the this year’s European Space Agency (ESA) International Summer School on Global Navigation Satellite Systems, which will take place in Barcelona, Spain, at the end of August.
 

April 26, 2015

Car Technology Choice Study Shows Low Interest in Navigation Functions

Navigation technologies appear to be losing their charm among new car buyers in the United States.
 
Twenty years after Detroit introduced the first in-vehicle car navigation systems, employing GPS and digital map technology, collision avoidance appears to be the common theme among the most popular automotive technologies, according to a new J.D. Power study released last Wednesday (April 22, 2015).
 

New Builds • April 23, 2015

Novatel Launches Multi-GNSS Wideband 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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