I can give some ideas on this using basic surveying. JOSM measurement tools will let you do the editing too so its not that difficult to get items mapped in this way. Especially useful for descrete objects in an otherwise fairly featureless landscape.
Until I get a moment to drop something on the wiki you might check your local library for a copy of "Surveying" by Bannister and Raymond. The current edition is the 7th however earlier editions cover the basics of elementary surveying as those techniques haven't changed. Older editions can be picked up now and again on ebay for around a fiver. Cheers Andy >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:talk- >[EMAIL PROTECTED] On Behalf Of Jeffrey Martin >Sent: 12 May 2008 9:48 PM >To: OSM Talk >Subject: [OSM-talk] Mapping distant objects by triangulation. > >I couldn't find the other thread on this topic. > >How do you map an object, like a tower on top of a mountain, that >you don't have access to without expensive survey equipment? > >My thought is to use a plumb bob to line up the unknown object >with some known objects. I would find something like a phone >pole between me and the mountain tower. I would move along >a road until the pole and the tower line up. Now I have a straight >line. Do it again with another strait line and I have two lines >to define the location. > >Would that work? > >-- >http://bowlad.com > >_______________________________________________ >talk mailing list >[email protected] >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk > >No virus found in this incoming message. >Checked by AVG. >Version: 8.0.100 / Virus Database: 269.23.16/1427 - Release Date: >11/05/2008 1:08 PM _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
