Intersection methods Description
Bearing & distance Calculates the intersection point of a line and
a circle. T
he line is defined by a point and a
direction. The circle is defined by the centre
point and the radius.
Elements that must be known are
•
the co
ordinates of points.
•
the direction from one known point to
the COGO point.
•
the distance from the second known
point to the COGO point.
•
offsets if necessary and configured.
The coordinates of the known points
•
can be taken from the job.
•
can be manually measured during the
COGO calculation.
•
can be entered.
Points with full coordinate triplets and posi-
tion only points can be used.
Four points Calculates the intersection point of two lines.
A line is defined by two points.
Elements that must be known are
•
the co
ordinates of four points.
•
offsets of the lines if necessary and con-
figured.
The coordinates of the known points
•
can be taken from the job.
•
can be manually measured during the
COGO calculation.
•
can be entered.
Points with full coordinate triplets and posi-
tion only points can be used.
Two TS observations Calculates the intersection point of two lines.
A line is defined by a TPS setup and a TPS
measurement from this setup.
Elements that must be known are
•
the co
ordinates of two points.
•
azimuths of the lines.
The coordinates of the known points
•
must be taken from the job.
•
must be TPS setup points.
The azimuths of the lines
•
must b
e TPS measurements from the
known points.
Points with full coordinate triplets and posi-
tion only points can be used.
482 COGO
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