Kongsberg Simrad EK80, Installation Manual

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Dimensional survey accuracy requirements
for ADCP operations
Minimum accuracy requirements are defined for the dimensional survey. Higher
accuracy will provide better survey results.
Modest accuracy requirements apply when your EK80 system is only used to investigate
objects in the water column. When used for acoustic Doppler current profiler (ADCP)
measurements the accuracy requirements are increased.The accuracy requirements
provided have been determined from considerations on how they contribute to the total
EK80 accuracy. Any errors in these measurements should not contribute significantly to
depth or position errors in the soundings.
Note
The given accuracies are maximum values. If easily achievable, better accuracies
should be obtained.
Transducer
•
Position (x,y)
: ±0.05 m
•
Position (z)
: ±0.02 m
•
Pitch
: ±0.10°
•
Roll
: ±0.025°
•
Heading
: ±0.1°
Motion Reference Unit (MRU)
•
Position (x,y)
: ±0.05 m
•
Position (z)
: ±0.05 m
•
Pitch
: ±0.05°
•
Roll
: ±0.02°
•
Heading
: ±0.05°
Heading sensor
•
Heading
: ±0.1°
Global positioning system (GPS) (Antenna)
•
Horizontal position (x,y)
: ±0.05 m
•
Vertical position (z)
: ±0.005 m
Waterline reference mark
•
Position (z)
: ±0.005 m
Dimensional surveying