Resection Measurement - Sokkia SET2CII Operator's Manual

15. RESECTION MEASUREMENT
The "Resection measurement" is used to determine the instrument
station coordinates by observing 2 or more known stations.
Known statlon
I
\
Known station
0
SET2C can calculate the instrument station coordinates by method
of least squares by observing 2 to 5 known stations.
To calculate the instrument station coordinates;
when measuring distances, observe a t least 2 known stations.
or
when unable to measure distances, observe at least 3 known
stations.
However, the greater the number of known stations and the greater
the number of measured distances, the more precise the results will
be.
The Z coordinate can be calculated by inputting the Z coordinate of
at least 1 known station and measuring the distances of 2 or more
points. (The Z coordinate cannot be determined using only angle
measurement.)
Note: For the Resection measurement of highest accuracy, please
adjust the collimation error beforehand.
See P.212 "Appendix 2: For Angle measurement of the
highest accuracy, <Adjusting the collimation error by colli-
mation program>".
To recall the known station's coordinates from coordinate data
stored on the IC card, please refer to P.109.