Register | username: pw: 
Attackpoint - performance and training tools for orienteering athletes

Discussion: should we buy some beacons ...

in: Mr Wonderful; Mr Wonderful > 2016-02-19

Feb 19, 2016 6:35 PM # 
should we buy some beacons for the woods then... and let the best kalman filter win.
Feb 19, 2016 6:55 PM # 
Mr Wonderful:
I tried looking for hobby grade lidar to help with mapping, but the cheap ones are still worth more than most of the cars in my driveway (granted a low bar).
Feb 19, 2016 7:44 PM # 
If you have beacons you don't need a nap
Feb 19, 2016 7:45 PM # 
A map! One always needs a nap.
Feb 19, 2016 7:53 PM # 
Mr Wonderful:
For our upcoming homework, we have to localize a vehicle and ~200 trees at a park in New Zealand. Maybe this will help with sprint maps.

Feb 19, 2016 8:40 PM # 
Does each tree have a beacon? That is cheating!

Seriously though -- apart from acquiring Lidar there is also lot of work that is done to register and project it properly, which I am not qualified to do. So I'd stay away from hardware.
Feb 19, 2016 8:52 PM # 
Mr Wonderful:
That park set is using something like a camera and then edge detection/center of mass or something if I remember from class correctly.

So you could sort of do it with trees and a phone, but trees aren't on a normal o map so that doesn't make it fun.

My proposal was a small number of laser range finger measurements every so many meters. You could locate that way I think - that's not that much different than how one orienteers! I'm not sure if the prof will let us get away with only localization, then mapping would need a crapload more (unless trees) measurements, which then maybe the project teammates are right and it would be a pain.

At least we are all agreed that we want to work with something that doesn't have a lot of processing or measurement mess, which seems like the worst part of it.
Feb 24, 2016 12:12 AM # 
Variables like time (of day) and bearings need a different set of statistics, for the reason that you have noted. This book is out of print, but if you can borrow a copy at your library, it's definitely worth a read. Very approachable, and useful.

Please login to add a message.