NPL-352 Manual-09.pdf

Applications 4
The F2 softkey is not available on the NPL-332.
Setting up a station using multiple point resection 40.1
A resection sets up the station using angle/distance measurements to known points.
Z
X0
X1
X2
X
Height 1
Known point 1
(X1, Y1, Z1)
Instrument height
Y1 Y0 Y2
Station point (Xi, Yi, Zi)
Height 2
Known point 2
(X2, Y2, Z2)
Y
You can use a maximum of 10 points in a resection. Measurements can be distance
and angle, or angle only. Calculation starts automatically when enough
measurements are taken.
You can delete poor observations and recalculate if necessary. You can also select
the BS point.
If the angle between known point 1 and known point 2 (measured from the station
point) is extremely acute or extremely oblique, the resulting solution will be less
reliable geometrically. For geometric reliability, select known point locations (or
station point locations) that are widely spaced.
Pulse Laser Station NPL-302 Series Instruction Manual 71