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Don't throw away your map and compass



 
 
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  #1  
Old May 19th 09, 01:21 PM posted to uk.rec.walking
Bernard
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Posts: 37
Default Don't throw away your map and compass

According to a Guardian article, GPS satellites could start failing next
year.

http://www.guardian.co.uk/technology...e-to-breakdown

  #2  
Old May 19th 09, 01:27 PM posted to uk.rec.walking
Chris Gilbert[_4_]
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Posts: 286
Default Don't throw away your map and compass

Bernard wrote

According to a Guardian article, GPS satellites could start failing next
year.


GPS ? What's that ?

;-)

Chris
--
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www.ravenseyegallery.co.uk
Internet life support for small businesses
www.ravenseye.plus.com
Affordable web sites
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  #3  
Old May 19th 09, 02:11 PM posted to uk.rec.walking
Peter Clinch
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Posts: 1,966
Default Don't throw away your map and compass

Yoss1960 wrote:

rhetorical
And does anybody *seriously* believe that there are no plans to replace
those that do fail?
/rhetorical


"It is uncertain whether the Air Force will be able to acquire new
satellites in time to maintain current GPS service without
interruption," said the report, presented to Congress. "If not, some
military operations and some civilian users could be adversely affected."

It's not "if", but "when". You can't just order up a couple of new ones
from Screwfix for delivery by the weekend...

Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net http://www.dundee.ac.uk/~pjclinch/
  #4  
Old May 19th 09, 03:00 PM posted to uk.rec.walking
Phil Cook[_2_]
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Posts: 826
Default Don't throw away your map and compass

Peter Clinch wrote:

Yoss1960 wrote:

rhetorical
And does anybody *seriously* believe that there are no plans to replace
those that do fail?
/rhetorical


"It is uncertain whether the Air Force will be able to acquire new
satellites in time to maintain current GPS service without
interruption," said the report, presented to Congress. "If not, some
military operations and some civilian users could be adversely affected."

It's not "if", but "when". You can't just order up a couple of new ones
from Screwfix for delivery by the weekend...


I think the constellation of satellites is overpopulated for the
present and will still provide a fix if a few birds were to die.

Just checked and there are 31 at present and the system started with
24.
--
Phil Cook, last hill: Sgurr na Banachdich
http://www.therewaslight.co.uk
  #5  
Old May 19th 09, 03:03 PM posted to uk.rec.walking
Fellwalker
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Posts: 335
Default Don't throw away your map and compass

On Tue, 19 May 2009 12:27:43 +0100, "Chris Gilbert"
wrote:

GPS ? What's that ?


something that ships and planes navigate by.:-0
--
Mike "http://www.fellwalk.co.uk"
remove boots to email
  #6  
Old May 19th 09, 03:15 PM posted to uk.rec.walking
Mike Clark
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Posts: 365
Default Don't throw away your map and compass

In message
Peter Clinch wrote:

Yoss1960 wrote:

rhetorical
And does anybody *seriously* believe that there are no plans to replace
those that do fail?
/rhetorical


"It is uncertain whether the Air Force will be able to acquire new
satellites in time to maintain current GPS service without
interruption," said the report, presented to Congress. "If not, some
military operations and some civilian users could be adversely affected."

It's not "if", but "when". You can't just order up a couple of new ones
from Screwfix for delivery by the weekend...

Pete.


I'd like to see some quantification of "some" and "affected".

Mike
--
o/ \\ // |\ ,_ o Mike Clark
\__,\\ // __o | \ / /\, "A mountain climbing, cycling, skiing,
" || _`\,_ |__\ \ | caving, antibody engineer and
` || (_)/ (_) | \corn computer user"
  #7  
Old May 19th 09, 05:28 PM posted to uk.rec.walking
Neil[_2_]
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Posts: 67
Default Don't throw away your map and compass

In message , Bernard
writes
According to a Guardian article, GPS satellites could start failing
next year.

http://www.guardian.co.uk/technology...e-to-breakdown


From HIPAR at sci.geo.satellite-nav:

"This situation has been recognized for a few years. Fortunately there
have been no 'wholesale' failures of the oldest satellites. The
engineers seem to find ways to keep them working. So, even with the
various delays, decommissionings and replenishments have maintained
parity.

IIRM-20 appears to be coming under control and don't forget there
remains one IIR satellite in the barn. It can be targeted for the most
vulnerable orbital slot.

There is also reference to the first IIF satellite finally having been
delivered for launch latter this year. That's good news because getting
the first item working is most difficult part of a
developmental/production program.

The GPS Wing and it's contractors should be commended for maintaining
the current constellation. I think the alarming GAO report is overly
pessimistic."

Regards,
--
Neil Pugh

  #8  
Old May 19th 09, 09:14 PM posted to uk.rec.walking
Martin Richardson
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Posts: 594
Default Don't throw away your map and compass

In message , Chris
Gilbert writes
Bernard wrote

According to a Guardian article, GPS satellites could start failing next
year.


GPS ? What's that ?

;-)

Group of people you find in your local surgery


--
Martin Richardson
56/220 Corbetts - 25% 772/1555 Marilyns - 49.6%
118/211 Irish Hewitts - 56% 107/118 New Donalds - 91%


  #9  
Old May 19th 09, 10:22 PM posted to uk.rec.walking
Bill Grey
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Posts: 1,117
Default Don't throw away your map and compass

In message , Chris
Gilbert writes
Bernard wrote

According to a Guardian article, GPS satellites could start failing next
year.


GPS ? What's that ?

;-)

Chris
--
Photography by Chris Gilbert
www.ravenseyegallery.co.uk
Internet life support for small businesses
www.ravenseye.plus.com
Affordable web sites
www.sitegateway.net


Gilbert's Photo Services
--
Bill Grey

  #10  
Old May 19th 09, 10:23 PM posted to uk.rec.walking
Bill Grey
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Posts: 1,117
Default Don't throw away your map and compass

In message , Peter Clinch
writes
Yoss1960 wrote:

rhetorical
And does anybody *seriously* believe that there are no plans to replace
those that do fail?
/rhetorical


"It is uncertain whether the Air Force will be able to acquire new
satellites in time to maintain current GPS service without
interruption," said the report, presented to Congress. "If not, some
military operations and some civilian users could be adversely affected."


Let's hope the devotees get off the hills before it happens :-)
--
Bill Grey

 




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