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Posts Tagged "GPS augmentation"

The GPS Aided Geo Augmented Navigation or GPS and Geo Augmented Navigation system (GAGAN) is a space-based augmentation system (SBAS) funded by the Indian government. Interestingly, Gagan is not just an acronym: it is also a Sanskrit word for the sky. The GAGAN space transponder is due to be launched on 19th May 2011 on an Ariane-5 launcher from the European Space Agency (ESA) spaceport in Kourou, French Guiana. This will be the second attempt to get GAGAN into orbit. The first satelli...

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The recent certification of the European Geostationary Navigation Overlay Service (EGNOS) for safety of life applications now means that its performance is of a high enough standard that it can be used for aviation. Pilots can reliably use it as a navigation tool, enhancing the performance of stand-alone GPS. This means navigations systems for aircraft can now be produced knowing that the systems they will use are certified, robust and reliable. Designers and manufacturers of these sys...

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In a recent post I explained the concept behind QZSS (What is QZSS) – Since the publication of that post and to further help in the development of the Quazi-Zenith Satellite System (QZSS) programme, the Japanese Aerospace Exploration Agency (JAXA) has selected Spirent’s GSS8000 Multi-GNSS Constellation Simulator to verify QZSS receivers. The highly elliptical orbits of QZSS allow satellites to dwell at high elevations, improving coverage in urban canyons and providing additional overhead ran...

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