SBAS and RNSS

ISRO to Launch Last IRNSS Spacecraft
April 21, 2016

ISRO to Launch Last IRNSS Spacecraft

Second stage of PSLV-33 being prepared for integration. ISRO photo

The Indian Space Research Organization (ISRO) has announced plans to launch the final satellite for the Indian Regional Navigation Satellite System (IRNSS) on April 28.

The IRNSS-1G launch is scheduled for 12:50 p.m. local time from Satish Dhawan Space Center, in Sriharikota, Andhra Pradesh, India, with the navigation payload being carried into space on India’s Polar Satellite Launch Vehicle (PSLV-C33).

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By Inside GNSS
DHS Demonstrates eLoran Precision Timing Technology at the New York Stock Exchange
April 20, 2016

DHS Demonstrates eLoran Precision Timing Technology at the New York Stock Exchange

The Department of Homeland Security (DHS) Science and Technology Directorate (S&T) announced today (April 20, 2016)  the successful demonstration of Enhanced Loran (eLoran) for precision timing of financial transactions at the New York Stock Exchange (NYSE).

The demonstration at the NYSE was hosted by Juniper Networks on April 19 and presented to technical representatives from the financial services, energy, and communication sectors.

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By Inside GNSS
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India Successfully Launches IRNSS 1F into Orbit
March 10, 2016

India Successfully Launches IRNSS 1F into Orbit

The Indian Space Research Organization (ISRO) announced the successful launch today (March 10, 2016) of the sixth satellite in the Indian Regional Navigation Satellite System (IRNSS).

IRNSS-1F lifted off at 4:01 p.m. IST from the Sriharikota rocket port in Andhra Pradesh on board the Polar Satellite Launch Vehicle (PSLV-C32). The 1,425-kilograpm spacecraft will be placed in geostationary orbit at 32.5 degrees East longitude.

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By Inside GNSS
JNC 2016 – Joint Navigation Conference
February 10, 2016

JNC 2016 – Joint Navigation Conference

Dayton Convention Center, Ohio

The JNC 2016 – Joint Navigation Conference will take place June 6-9, 2016 at the Dayton Convention Center in Dayton, Ohio. The annual event covers military navigation technology, "the Foundation for Military Ops."

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By Inside GNSS
ESS 2016: European Space Solutions Conference

ESS 2016: European Space Solutions Conference

Old City Hall of The Hague, The Netherlands

Under the auspices of the 2016 Dutch Presidency of the Council of the EU, the fourth edition of European Space Solutions will take place at the World Forum Convention Centre from May 30 to June 3, 2016 in The Hague, The Netherlands.

Online registration is available.

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By Inside GNSS
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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
WP-500px.jpg
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
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