Best GPS?

[BAJR]

Thats the one... in fact the many complementary methods came in bloodly useful an hour ago... I had two other means of locating an errant field system... bloody utm! coord tranform.. grumble..!

[Dinosaur]

You can increase the accuracy of you readings by taking lots of the same point, then averaging them....I once helped a friend plot a readings from a hand-held GPS against time. Very intersting result, from what I remember it varied as a simple sine curve! But that was back in the day when the signal was scrambled.

The one time I left a hand-held GPS sitting on the ground in the middle of a quarry for an afternoon (amazingly no one ran it over!), the points it recorded plotted an elipse 8m long and 5m wide - does that count as accurate? The thing was claiming a 2m or less accuracy throughout! The 'GPS' systems that use phone masts as fixed points seem a far safer bet in Britain, at least in those rare locations where you can actually get a decent phone signal - the only real drawback are the phone bills....

[kevin wooldridge]

Surely it isn't beyond the realms of possibility for someone to develop an I-phone app that gives you your location/co-ordinates based upon cellular phone land mast triangulation as opposed to sattelites. Seems to me that increase in accuracy would be exponential.....could also combine a WGS/OS co-ordinate transposition programme.

[Dinosaur]

According to Top Gear (Clarkson's usually the most reliable source of info?) there's an app for finding the nearest gay guy in the bar you're in, so locating a b****y great ditch shouldn't be tricky :face-approve: