Geosynchronous GPS?

"Ultimate Buu" writes:

Wouldn't it be prudent for the U.S. to develop a GPS-like system which is
based in a geosynchronous orbit, as both the Chinese and Russians are
developing ASW (anti-satellite warfare) systems? At the very least such a
system should be used as a backup since most precision weapons rely on GPS.
It would be much harder for the Chinese to knock out a geosynchronous
satellite and it would be almost impossible to do so using lasers (their
preferred method at this time).


Were you under the impression that GPS was in LEO?

GPS is not in GEO, because it doesn't need that specific orbit and
because that's a crowded bit of real estate and frequency space as is,
but it is in a very high sub-GEO orbit not likely to be reached by
first-generation antisatellite weapons. And anything that *can* reach
GPS, can almost certainly reach GEO as well.


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