Backwards Bearing & Distance - Leica GPS1200 Series Technical Reference Manual

46.3.5
Description
Diagram
Survey - Hidden Points
Backwards Bearing & Distance
In order to compute the hidden point, the measurements are taken from the hidden point.
One point must be known. It
• may already exist in the job.
• may be manually occupied during the hidden point measurements.
• may be manually typed in.
The distance and the bearing from the hidden point to the known point are to be determined.
An auxiliary point helps compute the bearing which might not be known. An auxiliary point
may be measured in the direction from the hidden point to the known point.
d
P0
GPS12_48
P2
Known
P0 Known point, <Point:>
P1
To be measured
α
d
P1 Auxiliary point, optional
Unknown
P2 Hidden point
GPS1200
Bearing from P2 to P0
Distance from P2 to P0
1245