GPS was and would still be useable with SA back on. And, the Coast Guard
still supports DGPS. I am no expert, but my GPS with SA on always beat my
use of a sextant.
John WA4WDL
--------------------------------------------------
From: <[email protected]>
Sent: Friday, February 12, 2010 6:46 AM
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Subject: Re: [time-nuts] Loran C sounds
Hi Steve,
What is going to happen if GPS has a problem, or if the US puts SA back
on? Now the only backup for navigation is a sextant.
Steve KD2OM
GPS _will_ (can) not get a serious problem as long as the US is at war.
Buy a Glonass receiver. (In a few years buy a Galileo/Gagan/GPS/Glonass
recevier...)
The US has promised not to turn SA back on. I also do not think the
(maritime) DGPS stations have closed down in costal areas. They will
mitigate SA and still provide some integrity.
--
Björn
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