SBAS and RNSS

Glen Gibbons Jr.
January 27, 2016

Making Good Better

SBAS and RNSS: The Unsung Heroes of GNSS

Okay, if I had wanted to pander to GNSS fans, I might have called this, “Making Great Greater.”

But there are only so many superlatives that can be lathered on this remarkable technology before simple praise turns into hagiography.

So, it’s time once more to give a little love to those unsung heroes of GNSS: the augmentations and regional navigation satellite systems.

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By Inside GNSS
SwiftNav Releases Specs on UAV-Focus GNSS Receiver Platform
January 26, 2016

SwiftNav Releases Specs on UAV-Focus GNSS Receiver Platform

Swift Navigation’s Piksi GPS receiver

Having started out with a crowd source–funded launch through Kickstarter followed by two rounds of more conventional venture capital backing — $2.6 million in 2014 and another $11 million last December — San Francisco, California–based Swift Navigation is going after a low-cost, high-precision market such as unmanned aerial vehicles (UAVs) with its Piksi GPS receiver platform.

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By Inside GNSS
SBAS
January 19, 2016

SBAS

ISRO’s GSAT-15 satellite before launch, with GAGAN navigation payload

GAGAN — India’s SBAS
Redefining Navigation over the Indian Region
Recognizing the potential benefits of satellite-based augmentation systems, India took the early initiative to create its own SBAS called GAGAN — GPS Aided Geo Augmented Navigation.

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By Inside GNSS
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January 18, 2016

GNSS Satellite-Based Augmentation Systems

Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.

With the support of the European Space Agency (ESA), a European team designed a frequency- and time-transfer process and validated its performance in a complex navigation test bed. This two-way time-transfer technology took advantage of the following:

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By Günter W. Hein
SOLFig2.jpg

What is Doppler collision and is it a problem in GNSS?

Figure 1, 3, 4 & 5

Q: What is Doppler collision and is it a problem in GNSS?

A: Doppler collision is a physical effect in code-division multiple access (CDMA) systems where code measurement errors are observed due to cross-correlation effects. Doppler collision may occur when the Doppler frequency between signals from two different transmitters is smaller than the code lock loop bandwidth.

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By Inside GNSS
GAGAN-500px.jpg

GAGAN — India’s SBAS

The GPS Aided Geo Augmented Navigation (GAGAN) system was developed by the Indian Space Research Organization (ISRO), together with Airports Authority of India (AAI), to deploy and certify an operational satellite-based augmentation system (SBAS). The system’s service area covers the Indian Flight Information Region (FIR), with the capability of expanding to neighboring FIRs. 

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By Inside GNSS
PayloadFig4.jpg

Measuring Navigation Payload Absolute Delay

Figures and Tables

In satellite navigation, the user receiver finds its position by measuring its distance to satellites and knowledge of the satellite position. The distance is measured by ranging, i.e., finding the delay of the signal from the transmitter to the receiver. The delay will comprise of payload hardware delay and the geometric range delay. Hence, the payload delay of the signal from generation to radiation is very important and needs to be transmitted in navigation data. 

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By Inside GNSS
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ICG-11: International Committee on GNSS
January 14, 2016

ICG-11: International Committee on GNSS

Russia will host the eleventh meeting of the International Committee on GNSS (ICG) from November 6 to 11, 2016 in Sochi, on the Black Sea near Georgia. This meeting is organized by Roscosmos, the State Space Corporation. It will take place at the Pullman Sochi Center Hotel and Conference Center.

The ICG is a voluntary United Nations–backed association that brings together GNSS and augmentation providers, including the United States, Russia, European Union, China, India, and Japan.

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By Inside GNSS
CSNC 2016: China Satellite Navigation Conference

CSNC 2016: China Satellite Navigation Conference

Preparing for a May 2016 event at the Hunan International Conference and Exhibition Center, Changsha.

The 7th China Satellite Navigation Conference and exhibition will take place at the Hunan International Conference & Exhibition Center in Changsha (長沙), the 3,000 year old capital city of Hunan Province on May 18, 19 and 20, 2016.

Several thousand scientists, GNSS businesses and researchers from all over the world are expected to attend this high-level annual event. The conference language will be Mandarin, with simultaneous English translation.

Topics include:

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By Inside GNSS
2016 Geospatial World Forum

2016 Geospatial World Forum

The Geospatial World Forum 2016 and industry exhibition will be held at the Beurs-World Trade Center in Rotterdam in Rotterdam, The Netherlands on May 23 – 26, 2015.

This year’s theme is "Where’s the Money? Disruptive Business Models." The annual event features plenary and technical sessions and workshops on policy, technology and user practices of the GIS  industry. Plenary themes this year are:

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By Inside GNSS
ICL-GNSS 2016: Localization and GNSS
January 13, 2016

ICL-GNSS 2016: Localization and GNSS

The sixth international conference on localization and GNSS will take place at the Universitat Autònoma de Barcelona (UAB) – Casa Convalescència, a UNESCO site, on June 28, 29 and 30 in Barcelona, Spain.

ICL-GNSS covers recent research on terrestrial and satellite-based positioning techniques to provide reliable, accurate and low latency position information with the goal of inspiring new design, implementation, test and evaluation methodologies for positioning platforms.

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By Inside GNSS
Baška GNSS Conference 2015
December 28, 2015

Baška GNSS Conference 2015

The 10th Baška GNSS Conference will take place May 8–10, 2016, in Baška, Krk Island, Croatia, organized jointly by The Royal Institute of Navigation (London, UK), Faculty of Maritime Studies (University of Rijeka, Croatia), and the Faculty of Transport and Traffic Sciences (University of Zagreb, Croatia),  with technical co-sponsorship from Beihang University of Aeronautics and Astronautics (Beijing, China)

The conference focuses on GNSS resilience and GNSS applications development. The deadline for submitting an abstract (300 – 500 words) of a proposed paper is February 22, 2016. Please contact Renato Filjar.

Please contact Ms Sally-Anne Cooke (e-mail <co********@*****rg.uk>) or Mrs. Marija Šimić-Hlača (e-mail: <ma****@**ri.hr>) for further information.

By Inside GNSS
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