Today, the Japanese satellite Michibiki successfully cleared all the tests to receive signals.

It's said that the aim is to cover the areas where American GPS system failed in Japan, and it would start to be used March 2011 onwards.

They are trying to establish a Japanese (Asian) original system that would work independent from the American GPS, even when the use of American GPS would be hindered.

Once the Asian GPS is established, it becomes more easy to use combat-drones with precision, I guess.

[link to plaza.rakuten.co.jp]