[time-nuts] New Japanese GPS accuracy
magnus at rubidium.dyndns.org
Wed Jan 5 03:15:06 UTC 2011
On 01/04/2011 07:39 PM, Joseph Gray wrote:
> No details on how the extra Japanese satellite is making it possible
> to get this accuracy.
This is the first bird for the QZSS system. The Quasi-Zenith orbit
creates a deformed figure of 8 over the earth, and has a fairly low
speed while being overhead Japan. This helps significantly in urban
canyons in Japan.
Just following links from that article you get some info, but searching
for QZSS should give plenty of material.
A good example where a three-bird setup causes local improvements.
Australians should also be happy about it.
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