I'm new to this site. I have a couple of GPS devices and I am wondering how I can postprocess my data for best accuracy. Any recommendations on best loggers and best (if any) methods for postprocessing?
Thanks!
Dorn Hetzel
Hogansville, GA, US
OpenStreetMap
I'm new to this site. I have a couple of GPS devices and I am wondering how I can postprocess my data for best accuracy. Any recommendations on best loggers and best (if any) methods for postprocessing?
Thanks!
Dorn Hetzel
Hogansville, GA, US
Discussion
Comment from Biogenesis_ on 26 July 2008 at 08:14
For high accuracy loggers you'd be looking at a Garmin "H" (for High sensitivity, like an Etrex Legend HCx) or something with an external antenna. Apparently Sirf III units have good sensitivity too.
As for post processing all you can really do is retrace the same road several times, at different times of day, then guess where the road is by averaging the traces by eye.
I do a lot of cycling around residential areas and find that cycling down both sides of a road gives reasonable accuracy.
Lastly, and most importantly, use your head. If you change lanes and put a dint in a trace don't draw a corner in the road, etc. Often guessing the location for something can be more accurate and more informative than trusting in the GPS 100%.
Oh, and welcome to OSM, enjoy your stay :).
Comment from marscot on 28 July 2008 at 14:54
I also dont trust the first 5mins of my gps traces to be 100%, as the gps is still finding its feet