GNSS (all systems)

Coherent Integration Time Limits

Coherent Integration Time Limits

Equation: signal variance for a “ring of scatterers” model

Indoor GNSS propagation environments are characterized by multiple reflected signal paths (multipath) terminating at the receiver. Consequently, the received signal’s amplitude, phase, and perceived angle of arrival attributes vary randomly as the receiver moves. This has created significant interest among receiver designers and manufacturers to develop powerful processing for GNSS handsets such that these can operate effectively in indoor faded environments.

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By Inside GNSS
The Civilian Battlefield

The Civilian Battlefield

Figures 1 & 2

For the complete story, including figures, graphs, and images, please download the PDF of the article, above.

Growing dependence on GNSS for positioning, navigation, and timing (PNT) has raised a parallel concern about the potential risks of signal interference. The popular press has recently highlighted accounts of car thieves using GPS jammers, solar flares pumping out L-band radiation, and faulty television sets causing havoc to GPS receivers across an entire harbor.

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By Inside GNSS
GNSS Inside Mobile Phones

GNSS Inside Mobile Phones

Figure 1 & Table 1

For the complete story, including figures, graphs, and images, please download the PDF of the article, above.

Recent years have seen GPS receivers built in as a standard feature in many consumer products. A growing number of mobile phones, personal navigation devices, netbooks and tablets are equipped with GPS receiver chips and navigation software that enable consumers to navigate from A to B or find their nearest coffee shop. According to Berg Insight, annual shipments of GPS-equipped mobile phones are estimated to reach 960 million devices in 2014.

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By Inside GNSS
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European Union GNSS Receiver Workshop

European Union GNSS Receiver Workshop

The Geospatial Building at the University of Nottingham

A two-day workshop on GNSS receivers will take place at the Geospatial Building at the University of Nottingham Innovation Park on April 14 and 15, 2011.

In addition to talks by GNSS experts, the workshop features product demonstrations, using the test facilitiies at GRACE, the GNSS Research and Applications Center of Excellence. These include GPS and Galileo full constellation Spirent simulator, signal record and replay devices and the roof-based fixed test track designed for dynamic research and testing.

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By Inside GNSS
European Union GNSS Receiver Workshop 2011
March 11, 2011

European Union GNSS Receiver Workshop 2011

The 2011 EU GNSS Receiver Workshop will take place at the University of Nottingham’s Geospatial Building on April 14 and 15.

In addition to talks, the event features project demonstrations that make use of the GNSS Research and Applications Center of Excellence (GRACE) test facilities. These include a GPS and Galileo full constellation Spirent simulator, signal record and replay devices and the roof-based fixed test track designed for dynamic research and testing.

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By Inside GNSS
ASCE -SPAR Geomatics Continuing Education Seminar

ASCE -SPAR Geomatics Continuing Education Seminar

Marriott Convention Center

The American Society of Civil Engineers will offer a day-long program on Monday, March 21 at SPAR International 2011 that will focus on real-time GNSS positioning and using the 3D Global Spatial Data Model

Bill Henning, senior geodesist for the National Geodetic Survey, will lead  the morning session. With more than 43 years of experience in all phases of surveying technology, he is helping to develop guidelines and support methodology for real time GNSS position with state, national, and international organizations.

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By Inside GNSS
GlobalGEO/ International Geomatic Week

GlobalGEO/ International Geomatic Week

Fira de Barcelona, Monjuic venue

The GlobalGEO Fair will take place in the Monjuic Venue, Hall 6 at Fira de Barcelona exhibition center in Barcelona, Spain from March 15 to March 17. 

The fair features the latest products for GPS navigation, 3D mapping, geographic information systems, photogrammetry, teledetection, geodesics, topography, satellite navigation, intelligent transport systems and communications.

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By Inside GNSS
RIN: GNSS Vulnerabilities and Solutions 2011
March 10, 2011

RIN: GNSS Vulnerabilities and Solutions 2011

Baška, Krk Island, Croatia

The fourth GNSS Vulnerabilities and Solutions conference, sponsored by the Royal Institute of Navigation, will accept paper abstracts through March 25, 2011.

It will take place from May 23-26 2011 on the Adriatic resort island of Krk.

The conference will focus on all aspects of satellite navigation, but particularly these subjects:

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By Inside GNSS
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