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2.7
COGO Calculation - Line/Arc Calculations Method
Diagrams
Line Calculation
COGO
The functionality of all screens and fields are similar for both the COGO line and
COGO arc calculations. For simplicity, both COGO calculation methods are
explained in this chapter. The screen names, field names and explanations for lines
are used. If required, additional information is given for COGO arc calculations.
Base Point
d2
P0
GPS12_119
Offset Point
d2
P0
GPS12_119
Segmentation
d
d
P0
GPS12_144
d1
d1
P0
GPS12_145
P1
Known
P0
P3
P1
P2
d1
P2
Unknown
P3
d1
d2
P1
Known
P0
P3
P1
d1
d1
P2
d2
Unknown
P2
P3
Line divided by <Method: No. of
d
d
Segments>
P1
P0
P1
d
Line divided by <Method: Segment
d1
d2
Length>
P1
P0
P1
d1
d2
GPS1200+
<Start Point:>
<End Point:>
<Offset Point:>
Base point
<Offset-XX:>
<ΔLine-XX:>
<Start Point:>
<End Point:>
<Offset-XX:>
<ΔLine-XX:>
<Offset Point:>
Base point
<Start Point:>
<End Point:>
Equally spaced segments result
from dividing a line by a certain
number of points.
<Start Point:>
<End Point:>
<Seg Length:>
Remaining segment
33
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