Kongsberg EM 710, Installation Manual

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Kongsberg EM 710
8 ALIGNMENT
Topics
• Summary on page 97
• Vessel coordinate system on page 98
• Sensor location and alignment on page 99
• Transducer Measurements on page 101
• Calibration of system on page 102
Figure 47 Reference points
The EM 710 is a precision instrument for bathymetric swath
mapping. To be able to produce data that are both detailed and
correct, it is necessary to calibrate the survey vessel very well,
and perhaps better than what may have been standard practice
earlier.
The required measurement consists of:
• measurement of where sensors and transducers are located
• measurement of how sensors and transducers are oriented
• measurement of the water line vertical location
• alignment of angular measurement sensors
After the installation is completed in dock, a full set of
measurements must be carried out to determine the relative
alignment of the sensors. This job has to be done by professional
and experienced land surveyors with qualified work instructions
for this type of work. Kongsberg Maritime can not be expected
to have qualified personnel for such work.
The results, with all sensor locations and alignments referred
to a common vessel coordinate system, are to be entered in the
EM 710 Operator Station.
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