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Inside GNSS magazine • Volume 11 Number 6

November/December 2016

Online News, Articles, and Features

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Cover Story
Technical Article

Navigating in Space

Taking GNSS to New Heights

The emergence of modernized and new GNSS systems has made possible the use of GPS signals combined with those from other constellations to support positioning and navigation applications above the orbits of GNSS satellites.

Technical Article

Satellite Selection

for Aviation Users of Multi-Constellation SBAS

The incorporation of multiple constellations into satellite-based augmentation systems may lead to cases where more satellites are in view than an aviation receiver has tracking channels. This article examines methods for selecting the optimal set of satellites and further describes a method to specify performance instead of a minimum hardware channel capacity.

Columns & Editorials
GNSS Solutions

Challenges of Ray-Tracing for GNSS Applications

Thinking Aloud

Exit, Pursued by a Bear

What do two years of political theater portend for GNSS?

If P.T. Barnum — better known to later generations for his traveling circuses than his political acumen — could find nobility amid his gaudy business and personal style, we should not abandon all hope.

Washington View

How Will GNSS Fare Under a Trump Administration?

GNSS & the Law

Legislative Situation in India Regarding Satellite Navigation

Working Papers

Interference Localization from Space

Theoretical Background

Radio Frequency Interference causes the satellite industry to lose millions of dollars per year due to detrimental effects, ranging from a degradation in the quality of service to the complete loss of service. As a consequence, it is becoming critical important to design space systems that are able to localize the source of interference, allowing actions that can prevent future repetitions of similar behaviors. This is the first of a series of articles on the issue of interference localization.

GNSS Hotspots

GNSS Hotspots

World Records, Hacking the Grid, Drone Countermeasures and Cash in India

World Records, Hacking the Grid, Drone Countermeasures and Cash in India

Book Reviews

GPS for Everyone

You are Here

GPS seems to have come out of nowhere. . . one day we were driving around clueless of where we were with paper roadmaps that couldn't be folded back neatly once opened, and suddenly an amiable female voice came out of the dashboard offering directions to our destinations. Actually, GPS is based on simple ideas that have been around for centuries. In his new popular book on the subject, GNSS engineer and textbook author Pratap Misra traces the history and development of this essential positioning, navigation and timing technology now embedded in modern day life.

Book Reviews

GPS, GLONASS, Galileo, and BeiDou for Mobile Devices

From Instant to Precise Positioning

Ivan Petrovski’s book presents not only LBS navigation sensors based mainly on satellite navigation systems (GNSS) and software radio, but also provides valuable insight from their practical implementation.

360 Degrees
Industry View
Jammer Dectector
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