57
Move the prism far or close according to
the arrows, until
△
is 0 m.
△
is positive: move the prism far
away from the station.
△
is negative: move the prism close
to the station.
【
Side Shot Stake Out
】
PtID
:
50
△
Hz
:
0°00
′
00
″
△
:
0.000 m
Ⅰ
Mem.
NewPt2
DIST
RECORD
BACK
5.6 FREE STATION
The application “Free Station” is used to determine the instrument position from
measurements to a minimum of two known points and a maximum of five known
points.
The following measurements sequences to target points are possible:
1) HZ-angle and V-angle only
2) Distance and HZ-angle and V-angle
3) HZ-angle and V angle to some points and HZ-angle and V angle plus distance
to other points.
The final calculated results are Easting, Northing and Height of the present
station, including the instruments HZ-circle orientation. Standard deviations and
residuals for accuracy assessments are provided.
Measuring Techniques:
1) Single face I or II measurements are always applicable.
2) There is no specific point sequence or specific face sequences that are
required.
3) Gross errors checks are made for dual face measurements in order to the
same point(s) are sighted with the other face.
4) If a target point is measured several times in the same telescope position, the
last valid measurement is used for calculation.
Measurement Restrictions:
Target points with 0.000m height
If target points have a valid height of 0.000m, use 0.001m to enable in height
processing.
Computation Procedure
The measuring procedure automatically determines the method of data process,
e.g. intersection, 3 point intersection, etc.
If there are more measurements, the procedure will use a least squares
adjustment to determine the plan position, heights and azimuth.
1) The average value of face I and face II measurements is called up to the
computation process.
Содержание STS-750RC Series
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