Skip to comments.First Passenger Jet with Global Navigation Satellite System Appears in Russia
Posted on 07/31/2007 2:09:21 AM PDT by Webby_surfer
A plane TU-154 of the Moscow governmental air company Atlant-Soyuz has become the first passenger aircraft in the history of Russian aviation equipped with Global Navigation Satellite System.
(Excerpt) Read more at russia-ic.com ...
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How can this be the first Russian jet with GPS? This story don’t make sense.
This isn’t the US-based GPS, this is the Russian GLONASS system.
It’s not all that great - but there is some thought that the GLONASS satellites’ secondary purpose is actually global *surveillance*.
“but there is some thought that the GLONASS satellites secondary purpose is actually global *surveillance*.”
That makes it more interesting indeed. The article was very lacking in any sort of detail.
I’m not that up on the different data sources that aircraft can use in navigation- but the article seems to indicate that this is different from GPS. It can use GPS signals, but it appears to collect nav data from other sources, as well.
Some info on GNSS- haven’t had a chance to go through it thoroughly:
The GLONASS system is good enough to get one to the general area of a target, but I sure wouldn’t want to use it for anything critical. It has a minimum inherent vertical error of +/- 70 *meters* and a minimum horizonal error of 57 *meters*.
Compare that to GPS, which starts off with a base error of only 30 *centimeters* (about a foot or so).
That said, the GLONASS satellites are surprisingly large (1400+kg) when compared to a GPS satellite (770kg) and appear to have an antenna complex on them that doesn’t have anything to do with the primary purpose of broadcasting navigation signals.
Welcome to Free Republic! Interesting post, thanks.
Hi, thanks. It`s actually not the first news i post here :))
You’ve got me more interested now. I’m going to have to do some research. I’ve owned a couple of handheld GPS units for close to ten years, so I’m a bit familiar with GPS but not the GLONASS.
If it can use signals from GPS, GLONASS, and/or other sources in the same solution, it may be able to get very accurate positions - a large number of signal sources allows for sophisticated RAIM error detection.