From: Mark Sims
Well, the whole point of the exercise is to see how well you can do if you
DON'T have an internet connection, a 1PPS signal, or a stratum 1 time
server available... only the humble messages coming from a 10 dollar GPS
receiver. Try getting a net connection in the middle of the Gobi desert
(where one user uses Lady Heather's time sync feature to keep their system
clocks reasonably accurate).
If you can put the receiver into a binary message mode, you can usually do
better than NMEA (but, surprisingly, usually not by much). And by selecting
a receiver that has known good / stable message timing you can do
surprisingly well.
========================================
Well, yes, but if you choose a GPS receiver wisely it also has PPS, even on
some of the cheapest eBay units. Of course, what is best depends on what
accuracy the user needs, and how much they are prepared to pay.
Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-tay...@blueyonder.co.uk
Twitter: @gm8arv
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