[Talk-GB] Sat Navs to stop working?

2009-05-21 Thread Russ Phillips
Yesterday, on Radio 2's drive time show, someone mentioned that sat
navs would stop working next year. My wife heard it as she was driving
home, but there were no details.

We can't work out what they were talking about. The Listen Again page is here:
http://www.bbc.co.uk/programmes/b00kg9fr

I can't listen to it because I'm at work, but I can't find any mention
of it on the BBC news pages. Does anyone know what they were talking
about?

Russ

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Re: [Talk-GB] Sat Navs to stop working?

2009-05-21 Thread Douglas Furlong
My father phoned me last night to discuss it.

I've not listened to the show, however my understanding is that, they
satellites are gradually reducing in orbit and as such will eventually drop
on our heads, as opposed to letting us know where we are.

Apparently the US Military have not spent any money putting new ones up,
hence the problem.

Some how though, I really do doubt that it would all just stop working, the
US I would have thought would need to have their own system, and I doubt
they would like loosing all the money that the GPS system brings in.


2009/5/21 Russ Phillips r...@phillipsuk.org

 Yesterday, on Radio 2's drive time show, someone mentioned that sat
 navs would stop working next year. My wife heard it as she was driving
 home, but there were no details.

 We can't work out what they were talking about. The Listen Again page is
 here:
 http://www.bbc.co.uk/programmes/b00kg9fr

 I can't listen to it because I'm at work, but I can't find any mention
 of it on the BBC news pages. Does anyone know what they were talking
 about?

 Russ

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Re: [Talk-GB] Sat Navs to stop working?

2009-05-21 Thread Chris Jones
Glenn Proctor wrote:
 Media hype, as a result of political maneuvering by one of the several
 agencies involved with keeping GPS going[1]. The US is behind on one
 of the programs that launches new/replacement satellites, but the
 reality is that there are, IIRC, over 30 satellites currently in orbit
 plus 2 spares. 24 are needed for full global coverage so there's
 plenty of leeway yet.
   

And with any luck Galileo should be up and running in a few years...

http://en.wikipedia.org/wiki/Galileo_positioning_system

--
Chris Jones, SUCS Admin
http://sucs.org

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Re: [Talk-GB] Sat Navs to stop working?

2009-05-21 Thread David Earl
New Scietists covered this more than a month ago, and has another 
article this week:
http://www.newscientist.com/article/mg20227085.700-ageing-satellites-put-gps-at-risk.html
which references the original report on which this story has been based
http://www.gao.gov/new.items/d09325.pdf

David

On 21/05/2009 09:23, Douglas Furlong wrote:
 My father phoned me last night to discuss it.
 
 I've not listened to the show, however my understanding is that, they 
 satellites are gradually reducing in orbit and as such will eventually 
 drop on our heads, as opposed to letting us know where we are.
 
 Apparently the US Military have not spent any money putting new ones up, 
 hence the problem.
 
 Some how though, I really do doubt that it would all just stop working, 
 the US I would have thought would need to have their own system, and I 
 doubt they would like loosing all the money that the GPS system brings in.
 
 
 2009/5/21 Russ Phillips r...@phillipsuk.org mailto:r...@phillipsuk.org
 
 Yesterday, on Radio 2's drive time show, someone mentioned that sat
 navs would stop working next year. My wife heard it as she was driving
 home, but there were no details.
 
 We can't work out what they were talking about. The Listen Again
 page is here:
 http://www.bbc.co.uk/programmes/b00kg9fr
 
 I can't listen to it because I'm at work, but I can't find any mention
 of it on the BBC news pages. Does anyone know what they were talking
 about?
 
 Russ
 
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Re: [Talk-GB] Sat Navs to stop working?

2009-05-21 Thread Glenn Proctor
On Thu, May 21, 2009 at 9:48 AM, Chris Jones roller...@sucs.org wrote:
 Glenn Proctor wrote:

 Media hype, as a result of political maneuvering by one of the several
 agencies involved with keeping GPS going[1]. The US is behind on one
 of the programs that launches new/replacement satellites, but the
 reality is that there are, IIRC, over 30 satellites currently in orbit
 plus 2 spares. 24 are needed for full global coverage so there's
 plenty of leeway yet.


 And with any luck Galileo should be up and running in a few years...

 http://en.wikipedia.org/wiki/Galileo_positioning_system

Plus there's the (already functioning) Russian GLONASS
http://en.wikipedia.org/wiki/Glonass

I think there are receiver chips that will work with both GPS and
GLONASS, but they're not that common at the moment, presumably because
they cost a few cents extra to manufacture. Perhaps the hype about GPS
will encourage manufacturers to start building in this capability.

Glenn.

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Re: [Talk-GB] Sat Navs to stop working?

2009-05-21 Thread Steve Hill
On Thu, 21 May 2009, Chris Jones wrote:

 And with any luck Galileo should be up and running in a few years...

They are still claiming they will have 30 sats up by the end of 2013... 
assuming that includes the 2 test sats they have in orbit already, they 
are going to have to launch 28 satellites in 4.5 years.  Averaging a new 
satellite every 2 months doesn't seem very likley in the current economic 
climate, sadly.

  - Steve
xmpp:st...@nexusuk.org   sip:st...@nexusuk.org   http://www.nexusuk.org/

  Servatis a periculum, servatis a maleficum - Whisper, Evanescence


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