Let's see... You could take an slr camera, telephoto lens, and
a tripod down onto the low ground and take sightings up the
hill. Read the slant range to the focus point off the lens
markings, and read the upward camera tilt from a carpenter's level
and protractor. Since you want to take the readings every 50 feet,
this should work pretty well.
The vertical and horizontal distances would then resolve as:
vertical distance = slant distance x sin(tilt angle)
horizontal distance = slant distance x cos(tilt angle)
Dave Hachadorian, K6LL
Yuma, AZ
K6LL@juno.com
___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|