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pwpaul Occasional Visitor
Joined: Oct 31, 2006 Posts: 9
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Posted: Fri Dec 08, 2006 7:37 pm Post subject: I think TomTom is great but how do they do it? |
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Hi all, I have had a few sat navs over the years. All pda based. I have now bought the latest TomTom software for my axim and it works like a dream :-) I was just wondering how they actually map the sat nav maps? I apologise if this is covered else where, please post the link.
Do they just get paper based road maps and mark all the turns and bends in the road? Or do they send out survey cars equipped with some fancy gps gadgets? Probably make a great How's it made epsiode. |
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Oldboy Pocket GPS Moderator
Joined: Dec 08, 2004 Posts: 10643 Location: Suffolk, UK
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Posted: Fri Dec 08, 2006 8:30 pm Post subject: |
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This might be an interesting read for you.
Also the FAQ Page might help you. _________________ Richard
TT 910 V7.903: Europe Map v1045
TT Via 135 App 12.075: Europe Map v1120 |
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pwpaul Occasional Visitor
Joined: Oct 31, 2006 Posts: 9
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Posted: Sat Dec 09, 2006 1:59 am Post subject: |
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Ah thanks very much. Both links a fantastic read. I can not believe the GPS sats only kick out about 20-50 Watts of power!
The Tele Atlas truck is a serious piece of kit.
Cheers Oldboy :-) |
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Darren Frequent Visitor
Joined: 11/07/2002 14:36:40 Posts: 23848 Location: Hampshire, UK
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Posted: Sat Dec 09, 2006 10:52 am Post subject: |
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Yup 20 watts transmitted 20,000 miles into a device that could be the size of a box of matches! It's clever stuff _________________ Darren Griffin |
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PaulB2005 Pocket GPS Moderator
Joined: Jan 04, 2006 Posts: 9323 Location: Durham, UK
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Posted: Sat Dec 09, 2006 12:21 pm Post subject: |
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Quote: | Yup 20 watts transmitted 20,000 miles into a device that could be the size of a box of matches! It's clever stuff |
I can't believe they can aim at your Sat Nav on your dashboard from all that way up there! At least with Satellite TV you have a great big dish on the side of your house for them to aim at!!
(Acknowledgements to Smith & Jones) |
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