[GeoStL] Re: selective availability
- From: GC-RGS <gc-rgs@xxxxxxxxxx>
- To: geocaching@xxxxxxxxxxxxx
- Date: Thu, 20 Mar 2003 12:13:20 -0600
Susan,
There's been a lot of discussion about that on the satellite-nav newsgroup.
Apparently something was published in Germany that said SA would be turned back
on so the accuracy of the on board navigation of the cars would be effected.
But, nothing from the US has been confirmed and it seems to be the opinion that
it will NOT be on again. When it was turned off in 2000, it was stated that it
will NEVER be turned on again, and I'm sure they realized there would be wars
in the future. But then again, they can change their minds whenever they want.
Before SA was turned off, the accuracy was between 200-300 feet, or 100 meters
so that's probably right. I'd guess they were kidding about 100 meters is what
it is now, because we can get into areas when the satellites we pick up are not
optimal.
Also mentioned was the fact that the satellites could be programmed to force
errors (SA on?) in one part of the world (Middle East) but not another part
(US). Don't know if this is true but I'd sure think it's possible.
Rich
----- Original Message -----
From: Susan Ring
To: geocaching@xxxxxxxxxxxxx
Sent: Thursday, March 20, 2003 9:07 AM
Subject: [GeoStL] Re: selective availability
I better add that I may not be able to take part in any discussion that comes
up-we took a huge lightning hit last night in St. Peters and my Charter
connection has been coming and going.
----- Original Message -----
From: Susan Ring
To: SLAGA newsgroup
Sent: Thursday, March 20, 2003 8:53 AM
Subject: [GeoStL] selective availability
Last night I was flipping channels after the war started (doesn't it seem
weird to type that phrase?) and I happened upon Screensavers on TechTV. They
were talking about the probability that when the action on Iraq got into full
swing, selective availability would be turned on again to help hide troop
locations from the Iraqis. Has anyone else heard this? It does make sense.
Do you think that there would be an official statement?
Mind you, I am not complaining one little bit. Whatever it takes to get
our people home in one piece, I'm all for it. Merely curious.
Oh yes, they also mentioned that accuracy would go to about 100 meters (and
then joked that under certain conditions that's all you can get from a GPSr
anyway). Does that sound about right?
Just wondering,
Susan
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