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14.5 3- Dimensional coordinate measurement
14.5 3- Dimensional coordinate
measurement
The coordinates of the target are calculated using the following
fomulas and the results are then displayed. It is first necessary to
inputthe lnstrument and prism heights, lnstrument and Backsight
station coordinates and calculate or input the azimuth angle (see
previous pages).
N1= No
+
S x sinez x coseh
E l
=
Eo
+
S x sinez x sineh
Z1 = Z O + M h +Sxcosez-Ph
lnstrument station coordinates: (No, Eo, Zo)
Slope distance
: S
Zenith angle
: 0z
Azimuth angle
: eh
lnstrument height : M h
Target height
: Ph
Slooe
1
,
Taraet he~aht
Target
station
Hor~zontal
Instrument station
(NO EO.
20)
.-/-...-
A
/
-
-
-
E
-
-
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