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Inside GNSS magazine • Volume 8 Number 6

November/December 2013

Online News, Articles, and Features

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Cover Stories

Urban Positioning on a Smartphone

Real-time Shadow Matching Using GNSS and 3D City Models

When life gives you lemons, make lemonade. This article presents a smartphone-based system that uses the GNSS signal “shadows” cast by buildings to improve the accuracy of street-level positioning.

Technical Article

Integrated Navigation

GPS/BeiDou/INS Performance in Two Hemispheres

A series of road trials in China and Australia uses a new integrated navigation system that fuses GPS, BeiDou and MEMS inertial sensors. An analysis of various distributions of satellites in the constellations reveals the influence of the two GNSS systems’ satellite geometry on real-time positioning.

Feature
Human Engineering

Elizabeth Rooney: ‘Not a typical job for most working mums.’

This Scottish engineer says getting the balance right between working on
a demanding satellite mission alongside the no less challenging job of
being a mum is an ongoing process.

GNSS Forum

GNSS Spectrum: Sharing or Protection?

Precisely because it is finite, radio frequency spectrum is valuable. Can public good hold its own against commercial pressures? Will competition drive GNSS in search of other frequencies.

Columns & Editorials
Thinking Aloud

GLONASS: Not a Red Menace

Déjà Vu All Over Again

The real GNSS danger from Russia is protectionism, not espionage.

GNSS Solutions

Multipath vs. NLOS signals

How Does Non-Line-of-Sight Reception Differ From Multipath Interference?
Washington View

OCX and GPS Cybersecurity

A successful attack on the GPS system could be particularly damaging because so many critical networks rely on its signals and on each other. Consequently, a great deal of attention is being given to its security.

Brussels View

Questions in Wake of New Galileo Delay

A Tale of Two Cities

EC Vice-President Antonio Tajani called directly on ESA Director-General Jean-Jacques Dordain to explain why the latest Galileo launch delay was not anticipated and what ESA intends to do about it.

Working Papers

Finding the Right Algorithm

Low-Cost, Single-Frequency GPS/GLONASS RTK for Road Users

Can low-cost, single-frequency receivers provide real-time RTK-level performance for road users?

GNSS Hotspots

GNSS Hotspots

In this issue: The End of Nautical Charts, Litigious LightSquared, GPS Fungicide, Time to Turn to Crime, and 24,000 Ideas

Thought Leadership Series

RF Spectrum Protection

What does it mean for GNSS?

Growing pressure on a limited resource is squeezing users and giving rise to proposals for “sharing” spectrum. Will GNSS be lost in the noise?

360 Degrees
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