Differences between version 3 and predecessor to the previous major change of GPS.
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| Newer page: | version 3 | Last edited on Sunday, August 10, 2003 4:52:42 pm | by PerryLorier | Revert |
| Older page: | version 2 | Last edited on Sunday, August 10, 2003 4:50:50 pm | by AlastairPorter | Revert |
@@ -5,5 +5,5 @@
[GPS] is run by the American Department of Defence, who used to run a thing called "Selective Availability" where the satellites add a bit of jitter to the signal that they send, so that public [GPS] recievers were always off by 10-20 meters. This was so the "BadGuys" can't use [GPS] to attack the GoodGuys. This irritated everyone else, so the Europeans are going to put up their own [GPS] style system.
At this time (1999-2000) American Army [GPS] recievers were accurate to about 5cm
-Eventually, the Americans realised that all of the rest of the world were not BadGuys, so they started turning off selective availability, intending to have it all shut down by about 2005. However in May 200
they gave up and just turned it all off. Now consumer recievers have the same accuracy as the Army ones, which sortta annoys the people that spent vast amounts of money 'Finding' a US Army reciever when they could now just get a public one for about $200
+Eventually, the Americans realised that all of the rest of the world were not BadGuys, so they started turning off selective availability, intending to have it all shut down by about 2005. However in May 2000
they gave up and just turned it all off. Now consumer recievers have the same accuracy as the Army ones, which sortta annoys the people that spent vast amounts of money 'Finding' a US Army reciever when they could now just get a public one for about $200
