On Mon, Jul 29, 2013 at 10:59 AM, Mike N <nice...@att.net> wrote: > > On a related note, this subject came up for me a few weeks ago. Mark Gray > had given a lightning talk on this subject at SOTM US 2010 > http://wiki.openstreetmap.org/wiki/State_Of_The_Map_U.S._2010 . I was > thinking of starting with a single waypoint, which can be very accurate > after multiple averaging, multiple readings at different times of day, etc. > Then using a rig for highly accurate headstone location readings relative to > the reference point, which could be converted to GeoLocation coordinates. > I couldn't find any simple, low cost way to do this with a quick Internet > search. Are there Smartphone apps that can do this with the help of their > accelerometer? Some other type of hardware?
There are a number of apps that can average multiple GPS readings, one I've used before on Android is: https://play.google.com/store/apps/details?id=org.destil.gpsaveraging I don't know if you really get a more accurate position that way. I doubt that the accelerometers on smartphones are accurate enough to do any sort of dead reckoning. I believe that the surveying industry has equipment that establishes a highly precise base station and then measures relative to that but I'm sure that it's quite pricey. -- Jeff Ollie _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
