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(Some Guy)   Raytheon shuts down WAAS (GPS accuracy enhancement for air navigation) due to unexplained 'signal-in-space anomaly'   (raytheontands.com) divider line 21
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3669 clicks; posted to Main » on 14 Sep 2001 at 6:18 PM (12 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



21 Comments   (+0 »)
   

Archived thread
 
2001-09-14 06:24:14 PM
Where does it talk about the anomaly?
 
2001-09-14 06:24:47 PM
'Signal-in-space anomaly' What does this mean?
 
2001-09-14 06:27:52 PM
Just one more site that I can't get to today.
 
2001-09-14 06:30:00 PM
The aliens are preventing you from finding the truth.

Farking aliens.
 
2001-09-14 06:30:16 PM
Probably means not what some UFOlogists think:

"The Wide Area Augmentation System is currently under development and test prior to FAA certification.... .... currently broadcasting a Type 0 (test mode) message ...... ...... During this period Raytheon cannot guarantee the accuracy, integrity, continuity, or availability of the WAAS signal. "

In other words, "this is a test, this is only a test", ... any signals from space are probably glitches... Maybe caused by human-made objects in orbit.
 
2001-09-14 06:34:21 PM
This just in: The space signal is from the alien ship parked behind the moon, which is trying to post on Fark. The majority of their message asks, "what the hell is wrong with you talking monkeys?" The rest consists mostly of repeated use of the word "boobies." Thanks to correspondant Art Bell.
 
2001-09-14 06:41:27 PM
Must be a trunk line down somewhere, can't even ping most of the artical sites, maybe carnivore is eating all the bandwidth?
 
2001-09-14 06:47:47 PM
Woo hoo! My submission got listed! woo hoo!

sorry...

If you scroll down about 1/4 of the way on the page there's a table labeled "Planned Broadcast Outage Schedule"... the only entry there is for today (9-14-01), and the explanation is the anomaly.

Sorry if this gets geeky:

WAAS has, really, been in test mode for about a year now with uninterrupted service. The FAA is the holdup to approval, but the system has been so reliable in the 'test mode' that a lot of consumer GPS devices are relying on WAAS already, gambling that it will eventually be approved. Several of our company's GPS receivers are, and the Geode GPS for Handspring uses it too.

Despite the disclaimer, Raytheon has been running WAAS like it's a finished product. It really hasn't been off more than a few minutes per week for the last year- I noticed that there were 3 glitches on the 11th, too, though the first one was at 8:51pm on the 10th for NYC.

Basically, plain ol' GPS is accurate to maybe 3 meters without a differential correction, because storms and humidity (and dust... hmmm) in the atmosphere throws off the speed of the radio waves from GPS satellites. With WAAS correction, accuracy is improved to "sub-meter", or typically about +/- 2 feet in tests we've run during the last year.

Anyway, we've also been hearing rumors that Selective Availability could be turned back on (that would decrease accuracy to +/- 30 meters), or even that the consumer GPS band could be deactivated short-term, since the attack on Tuesday. But rumors are all over, while WAAS is actually not working right now.
 
2001-09-14 06:52:54 PM
There is a disruption in the force...well, actually there is a disruption with digex, a major GSP, so that's why browsing has sucked today. I should be fixed by now.
 
2001-09-14 07:12:26 PM
carnivore is basically an in-line sniffer you boob.
 
2001-09-14 07:30:24 PM
I think its the space dogs on mars asking for Beggin Strips.
 
2001-09-14 07:32:02 PM
Doesn't it make sense that (considering the current crisis) accurate civilian GPS should be "unavailable"?
 
2001-09-14 08:16:50 PM
Spiked: Beggin Strips -- LOL -- thinking of that stupid dog going "It's BAAAACON!" now -- needed that diversion, thanks.

-Moon
 
2001-09-14 08:45:27 PM
Bounce: I think you figured it out. I doubt very seriously whether there really is a glitch, except for the one that happened Tues.
 
2001-09-14 09:26:23 PM
Is this satellite GPS? For a long time, accurate satellite GPS was available only to the military, with a non-accurate version available to the public. This was to prevent our enemies from using it against us. I think it's time for the Taleban to put their helmets on.
 
2001-09-14 10:26:47 PM
Well the more accurate signals were encrypted for US military use only.

But you have to wonder if someone is trying to jam the satelites used to guide fighters and bombs. Maybe its afghanistans way of preventing us from hitting them. Or it could just be that these satellites are going into an encrypted mode for use by the US government only.....
 
2001-09-14 10:31:18 PM
Headline from next week: USA Declares War On Aliens!
Sub-headline: Says Bin Laden must face US justice before being turned over for bombing the Gak subways!
 
2001-09-14 11:37:48 PM
 
2001-09-15 12:05:10 AM
Maybe the military have ordered it to do that so that in the upcoming "war" the enemy can`t use their own gps stuff with any accuracy.
 
2001-09-15 02:42:44 AM
"Signal In Space Anomaly"

Yeah. There was a signal. It was in space. The anomaly has been corrected.
 
2001-09-15 11:39:33 PM
winter - I'd know that bastard's eyes anywhere. thats bin laden. how dare you bring that disgusting, festering pile of rancid, rabies-infested monkey shiat onto this section.

Sorry, nothing towards you, i just had to voice my opinion on OBL.

--(|psyk0mantis|)--
 
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