Dear Scott!
There are tree main procedures to record the geometry of the tree:
1. ?Assumed circle shape?
2. ?Assumed elliptical shape?
3. ?Free shapes?
In method 1) the distance between all sensors should be the same. The
circumference is measured first. (measuring tape) After entering the
circumference into the software the positions are calculated and a
sketch of the tree is displayed.
Following the measuring tape you put the nail in where the computer
tells you to do.
You can move the sensors on the screen to adapt the shape to special
forms of the tree (roots...).
In method 2) you measure the largest and smallest diameter of a tree.
(Calliper) After entering both diameters into the software the positions
are calculated and a sketch of the tree is displayed.
You wrap a measuring tape around the tree and put the nail in where the
computer tells you to do. You can move the sensors on the screen to
adapt the shape to special forms of the tree (roots...).
In method 3) the sensors can be mounted more or less freely on the tree.
With a calliper you have to measure distances between sensors. Using a
triangulation method all positions of sensors are calculated. There are
two methods to do this.
If you want to know more about this, please ask me for a pdf document.
If your calliper is too small for a tree, we usually take method 1 or 2.
I can send this document to anybody else interested. Just write an
email.
Lothar Göcke
argus electronic gmbh
Joachim-Jungius-Str. 9
18059 Rostock
Germany
Tel.: +49 / 381 - 40 59 815
Fax : +49 / 381 - 40 59 322
lothar.goecke@xxxxxxxxxxxxxxxxx.de
www.argus-electronic.de
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