P130J

Deano
Tell me about it.
My Tek remap for the P1 has mostly gone on new clothing, sleeping bag and bergen etc over the last few days.

boomer

I believe that during the initial Gulf war, so many US soldiers brought their own "consumer spec" GPS receivers that the military turned off SA - thus they would be accurate to a few feet. They assumed that the Iraqi soldiers would not have quite the same access to such devices.

Of course since then, SA has been turned off permanently so that everyone can benefit

Interesting stuff from P130J - thanks mate.

mb

Jye_0

Well steve if you are one of the good guys then fair enought, but I seriously doubt it and I doubt youd have time to be sitting here spouting this guff, Ive done more than my bit m8 and if you still think the lads are being fair done by then you can come and see us anytime. I stand by what I say. Nemo nos impune lacesset.

[Edited by Jye_0 - 1/21/2003 11:52:44 PM]

P130J

SA was finally turned off sometime in 2000. I think this was because the State Department wanted guaranteed GPS signals for civil aviation traffic etc.
The DoD can still degrade GPS accuracy quite significantly on regional basis (rather than the old, global SA thing) so they can "turn off" civilian GPS accuracy over Iraq only whilst maintaining military accuracy there.

God - I'm turning into a GPS-bore...

unclebuck

P130J I notice you live in Bath and your post name, could that be C130J as in the new Hurcules? This *might* suggest you are in the RAF??

Just asking because I worked for 3 years on the CBT (computer based training) for that aircraft.

UB

P130J

unclebuck

Well, glad to see they're in service (at last )

May it serve you well, come what may..

Jerome

P130J also lists himself as a plane driver, a further clue to his occupation. Alway modest types these RAF flyboys

carl

P code isn't classified itself -- it's Y-code that's classified (encrypted P-code). But the P-code is only transmitted on L2, and most civilian GPSs use only L1. Civilian GPS should be a lot more accurate since they turned off the SA, and accurate to a few metres. But it will never be as accurate as P-code military GPS, because without L2 you can't measure the ionospheric delay so you have to model it.

During the original Gulf war, the US equipped themselves with civilian GPS receivers and turned the SA off. I think the quote at the time was that they were counting on Saddam's "lack of access to mail order catalogues"