Angle
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| − | + | In mensuration, three angles are important<ref name=kleinn09> Kleinn, Dr. C. Skriptum zur Vorlesung „Einführung in die Vermessungslehre“ für Studierende der Forstwissenschaften. Georg August Universität Göttingen, 2009. </ref>: | |
| − | + | * '''Inclination angle''' <br> Specifying the elevation of a distance | |
| − | In mensuration, three angles are important: | + | |
| − | * ''' | + | |
* '''Azimuth''' or '''direction angle''' <br> Angle that is constructed by a distance and a defined direction (in geodesy mostly a [[north]] direction) | * '''Azimuth''' or '''direction angle''' <br> Angle that is constructed by a distance and a defined direction (in geodesy mostly a [[north]] direction) | ||
* '''Angle of refraction''' <br> Angle constructed by two distances | * '''Angle of refraction''' <br> Angle constructed by two distances | ||
| + | |||
| + | Note that angles are always read ''in clockwise direction''- direction angles based on the north direction, angles of refraction from the preceding to the following reference point. | ||
| + | |||
<gallery heights="250px" widths="350px"> | <gallery heights="250px" widths="350px"> | ||
| − | image:elev_angle.jpg|Elevation angle (with Zenith-, Nadir- and | + | image:elev_angle.jpg|Elevation angle (with Zenith-, Nadir- and angle of inclination) |
image:dir_angle.jpg|Azimuth/direction angle | image:dir_angle.jpg|Azimuth/direction angle | ||
image:ref_angle.jpg|Angle of refraction | image:ref_angle.jpg|Angle of refraction | ||
</gallery> | </gallery> | ||
| + | ==References== | ||
| + | <references/> | ||
| − | [[category: | + | [[category:survey]] |
Latest revision as of 07:51, 7 July 2011
In mensuration, three angles are important[1]:
- Inclination angle
Specifying the elevation of a distance - Azimuth or direction angle
Angle that is constructed by a distance and a defined direction (in geodesy mostly a north direction) - Angle of refraction
Angle constructed by two distances
Note that angles are always read in clockwise direction- direction angles based on the north direction, angles of refraction from the preceding to the following reference point.
Elevation angle (with Zenith-, Nadir- and angle of inclination)
Azimuth/direction angle
Angle of refraction
[edit] References
- ↑ Kleinn, Dr. C. Skriptum zur Vorlesung „Einführung in die Vermessungslehre“ für Studierende der Forstwissenschaften. Georg August Universität Göttingen, 2009.
