201511 November/December 2015

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November 28, 2015

Stuart Riley’s Compass Points

Riley and his son, Ben.

Return to main article: Stuart Riley: Right Turn from the Wrong Path

COMPASS POINTS

Professional Path

Riley received a Ph.D. in electrical engineering at the University of Leeds (United Kingdom) where he then worked as a research fellow in 1994–5. After that, he joined Trimble Navigation Ltd. as a GNSS receiver designer. He is based in Sunnyvale, California, where since 2010 he has served as the company’s engineering director

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By Inside GNSS
Code Shift Keying
November 19, 2015

Code Shift Keying

Equations 1 – 10

The constant growth and evolution of the positioning, navigation, and timing (PNT) market generate demands for more and more added-value applications and services relying on GNSS signals, with expectations for improved accuracy and availability. Some services may also rely on added-value content other than navigation messages, for example, higher data volume with less latency, such as the data carried by satellite-based augmentation system (SBAS) services and the Galileo Commercial Service.

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By Günter W. Hein
How Important Is It to Synchronize the Code and Phase Measurements of a GNSS Receiver?

How Important Is It to Synchronize the Code and Phase Measurements of a GNSS Receiver?

Q: How Important Is It to Synchronize the Code and Phase Measurements of a GNSS Receiver?

A: Precise timing lies at the heart of GNSS implementation and operation and is generally well understood in terms of synchronizing individual satellites and/or receivers. Recent results, however, have demonstrated that timing of code and phase measurements in a receiver can have significant implications for the timing community in particular.

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By Inside GNSS
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eCall

eCall

Figures 1 & 2

On April 28, 2015, the European Parliament voted in favor of an eCall regulation, which requires all new models of passenger cars and light vans that will be certified for the European market to be equipped with the automated emergency-call technology beginning in April 2018. The measure applies to all such vehicles regardless of selling price. In the future, a similar service may be implemented for trucks as well.

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By Inside GNSS
Positive Train Control Postponed
November 17, 2015

Positive Train Control Postponed

When the President signed a three-week extension — until Friday (November 20, 2015) — of federal transportation funding, he also gave railroads another three years to install positive train control or PTC on their locomotives and rail networks.

Rail operators now have until 2018 to upgrade their systems — plus another two years to actually get them working.

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By Inside GNSS
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State of Play in the European Union
November 16, 2015

State of Play in the European Union

Global navigation satellite systems have become core elements of the global economy. Essential for many civilian applications and innovations, GNSS brings rapidly growing economic benefits due to convergence of GNSS with smartphones, geospatial data, unmanned aerial vehicles, automated driving systems and other commercial technologies.

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By Ingo Baumann
Companies Aim to Commercialize Europe’s eLoran System, GNSS Backup
October 29, 2015

Companies Aim to Commercialize Europe’s eLoran System, GNSS Backup

A group of American and British companies is coalescing around a plan to provide Europe with a commercial, eLoran-based backup for the timing information now provided by GNSS signals.

The Earth Star consortium is made up of American and British companies and a few interested individuals, said Dana Goward, the president of the RNT Foundation. Goward, who is familiar with the group. He told Inside GNSS the consortium has yet to file formal organizational paperwork but would soon do so, most likely in Great Britain.

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By Inside GNSS
OCX Faces Crucial Pentagon Review, Congressional Broadside

OCX Faces Crucial Pentagon Review, Congressional Broadside

The new GPS ground control system’s cascading delays and ballooning budget have the Department of Defense (DoD) looking at other options, including shifting to an enhanced version of an existing control system, Inside GNSS has learned.

The Next Generation Operational Control System (OCX), which already has more than doubled in cost, will be the focus of a second “Deep Dive” review before the DOD’s top acquisition official on December 4.

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By Inside GNSS
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