FAA warns of GPS outages forthcoming
- Thread starter WUZombies
- Start date
WUZombies
Adventurist
Check the EULA on your GPS enabled device. Since the government owns all those birds in orbit they can pretty much give everyone else the finger.
A nice big spiral road atlas lives in the Family Adventure Van just in case of a catastrophic failure, or some sort of national security concern that the tin foil brigade warns us of.
Definitely Aliens. They're out there... watching and waiting.
It's better to have hard copy paper maps anyways, or just have a REALLY good memory of where you've been.
It's better to have hard copy paper maps anyways, or just have a REALLY good memory of where you've been.
Shame it's only 6 hours a day. If it were for an extended time I'd schedule a trip to take advantage of the clear backroads no one can find.
Herbie
Adventurist
It's been covered on some of the Tech blogs I read, but they also noted that the effect will be most pronounced at altitude (hence the original FAA warning), and will not be observed much at ground level (anything over 50ft, says the Gizmodo article). Since this isn't likely to affect your normal schmoe with an iPhone, it isn't really news.
The really scary bit is this:
"Embraer Phenom 300 business jets are being told to avoid the area completely during the tests. The FAA claims that the jamming test could interfere with the business jet’s “aircraft flight stability controls.”"
WUZombies
Adventurist
AGPS via triangulation from known points (towers) won't be effected, but most folks don't understand the difference and the resolution difference.
knightrider
Adventurist
AGPS does not solely rely on cell towers for position, it uses cell tower triangulation to get a rough position and cell data to download the GPS almanac data for a faster gps position lock.
AGPS can still aquire a gps lock without cell data but it can take 30seconds(hot start) to up to 10 minutes(cold start) to download the almanac, depending on how long its been since your last gps lock. This is how all other gps devices without data connections aquire a lock.
Sent from my RTT while stargazing
AGPS can still aquire a gps lock without cell data but it can take 30seconds(hot start) to up to 10 minutes(cold start) to download the almanac, depending on how long its been since your last gps lock. This is how all other gps devices without data connections aquire a lock.
Sent from my RTT while stargazing
WUZombies
Adventurist
In a true sense yes. In the LE world it's generally taken to mean cell tower triangulation (yes that is not correct), which can be wildly inaccurate but was rolled out to meet the mandate for e911 (which meant I spent nights looking over a few square miles of city for a 911 caller with no description because they called 911, whispered help and hung up on a disconnected cell phone).