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GPS detection of OCS? |
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MerlinMags 
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Joined: 19 Mar 04 Location: UK, Guildford Online Status: Offline Posts: 588 |
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 Topic: GPS detection of OCS?Posted: 13 Dec 13 at 12:01pm |
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If you ever proved that GPS did have high enough accuracy, you'd need to make the units high-visibility and make sure they were mounted above decks.
Otherwise some rascal could shift their GPS unit sneakily to the transom, and poke their bow safely over the line. |
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Time Lord
Far too distracted from work 
Joined: 03 Dec 13 Location: Warwickshire Online Status: Offline Posts: 301 |
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Posted: 13 Dec 13 at 3:56pm |
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Much more likely that some geek would find a way to tweak their GPS unit so that it allowed them a boat length or two!!
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Merlin Rocket 3609
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alstorer
Really should get out more
Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 13 Dec 13 at 7:45pm |
Define "above decks". Rather less common these days to have a space frame arrangement, but with that, arguably "above deck" and "at the mas foot" are the same thing. However, I reckon some of the GPS problems the cherubs encountered at Queen Mary SC at the inlands might have been down to them tucking them under carbon foredecks. Radio signals don't pass very well through carbon. Carbon planes have to have glass fibre radomes, just like metal ones.
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Al |
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alstorer
Really should get out more
Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 15 Dec 13 at 9:19pm |
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Occurs to me:
If a system is made that is accurate and reliable enough, with Start and Finish definitions altered to suit, then accurately scoring pursuit races could be much easier! For the sake of argument, I'd use proximity to the next mark of the course.
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Al |
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MerlinMags
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Joined: 19 Mar 04 Location: UK, Guildford Online Status: Offline Posts: 588 |
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Posted: 15 Dec 13 at 9:48pm |
Visible to your competitors, so they know you're not cheating! |
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JimC
Really should get out more
Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6661 |
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Posted: 16 Dec 13 at 1:42am |
Indeed it would. It would solve the age old problem of working out what order the boats are in on the beats. Proximity to marks is far too crude though, think it has to be some some sort of vmg calc, otherwise you could have boats that are clearly ahead scored behind. I wonder if they considered using the tracks to aid scoring at Datchet. Trouble is you really do need DGPS,I've been tracking my canoe recently and the striking how much the boat moves around in all 3 dimensions when tied rigidly to the jetty between races! |
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