Deleted
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Post by Deleted on Apr 4, 2014 21:30:36 GMT
Certainly don't disagree Rad, pretty amazing stuff my brain can't comprehend. Suppose having the Garmin auto start/stoping does not help comparing the data 1-1 on the longer segments.
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Post by Radchenister on Apr 4, 2014 21:53:52 GMT
To be taken with a pinch of salt in context - it's for fun, if you want to race then join races, simples .
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Post by taffytim on Apr 9, 2014 5:25:34 GMT
[quote author=" captslog" source="/post/53975/thread"On strava you get a moving cursor line on the charts, and this is echoed by a moving dot on the map. If there's a way of getting this to happen on Garmin, I'd like to know.[/quote] I did get this moving the other day after a bit of playing about, as I first thought it didn't want to move also. Can't remember how right now, when I'm back at my pc I'll have another play.
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Post by johnc60 on Apr 9, 2014 8:00:45 GMT
Hang on there a wee second ! GPS works on massive radius dims and geometry, taken from miles above the planet, computer chips and big receivers on earth are working with other systems that are drawing big circles to try and fix your position. The fix co-ords are an interpolation of data from inside and outside the atmosphere; on the one hand a 'Moonraker' style satellite is out there blipping away ... and on the other ... some sad git on a bike has a 2 inch square blipper on the planet surface, the readings are likely taken from a couple of satellites or more ... it's amazing it works at the accuracy and tolerances it does IMHO . It also amazes me. Back in 1979 when GPS was in its infancy I was in the Merchant Navy and sailed on a large container ship which was one of the first ships to be fitted with Sat Nav. The unit was the size of a desktop PC and cost around Β£50,000 (so we were told). There were only 6 satellites (today I believe there are 24)and on average we got one fix every 20 minutes, although sometimes we got 2 quite close together and then had to wait an hour for the next one. One day we were going through the Suez Canal and just for a laugh plotted a GPS fix and found that we were about 200 yards into the desert! So to get all the information we do today on such a small unit costing so little really is amazing.
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