Inexpensive Satellite Does the Job

Eugene Leitl Eugene.Leitl@lrz.uni-muenchen.de
Sat, 26 Jan 2002 13:26:57 +0100 (MET)


On Fri, 25 Jan 2002, Chuck Murcko wrote:

> Yep, we're talking 4 minutes or so at best for horizon-to-horizon on
> flyby exchanges. Awesome for mail & news though.

Yes, there's definitely a market for short text messages delivered to
anywhere on Earth's surface with some 10 min to h latency.

> Yeah. Or GPS for coordinates, doppler corrected, etc. It would be
> cheaper/easier to implement than a straight pulse radio system because
> of ubiquity, but not independent. And accurate enough. You'd always see

Yes, don't put your eggs in one basket. With a cloud of nodes you'd have
full control and huge amounts of redundancy.

> enough GPS birds. Heck, you could put 4 diversity receivers and run
> pairs of antennas at opposite ends of the satellite and use software to
> run a 4x2 diversity system that was tumbleproof.

Interesting. They're small birds, though.