The Galileo project
 

The current air navigation systems work, lots of redundancy, what with the various forms of nav available. I think GPS is brilliant, slowly becoming the de facto preference.

However....

Brussels is spending billions on a satellite system described as a stupid waste of money by the company developing it – Telegraph Blogs

Interesting article. I hope it does go ahead. ADF technology is, I think a bit obsolete these days, bearing in mind there seems to consensus towards more RNAV.

So, do we need another GNS?

Actually, the question is. Do we need all of these satellite systems?

China x 2
India
Russia

The word is redundancy and releasing reliance onn a US Dept of Defense run system

Sir George Cayley