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Particular case: soil with plugged trench badly compacted
The difference in compaction of the trench causes a damping of the measured signal.
A local secondary extremum is found above the pipe.
Note :
The presentation of these particular cases aims to help the operator do a very precise locating of the
desired pipe (+/- 15 cm in XY).
If you only consider the extremum as the locating of the pipeline (without performing a finer
interpretation), the result will still be very good - in any case more precise than any excavator!
Pavement
Measurement axis
Trench plugged and
badly compacted
Pipe
