Konsberg EM 124, Руководство по установке

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External sensors requirements
The external sensors must fulfil these requirements to achieve the specified performance
for the EM 124 system.
Sensor accuracy
The accuracy of the sensor data, as specified by the sensor manufacturer, must fulfill
(preferably surpass) the following requirements
•
Roll, pitch and yaw rate
: 0.03 deg/s RMS
•
Velocity
: 0.03 m/s RMS
•
Latency
: Maximum 5 ms
•
Update rate
: 100 Hz
•
Roll
: 0.02 degrees RMS
•
Pitch
: 0.05 degrees RMS
•
Heading
:
– 0.5 degrees TX array: 0.1 degrees RMS
– 1 degree TX array: 0.2 degrees RMS
– 2 degrees TX array: 0.4 degrees RMS
•
Heave (real-time output)
: 5 cm or 5 % whichever is highest
Doppler shifts
All new generation of multibeam echo sounders from Kongsberg Maritime have an
extended range performance by use of a frequency modulated transmitter pulse (FM),
also called chirp pulse. In the FM mode, the Doppler shift made by the movements of the
survey vessel relative to the bottom, causes a range error. This error must be corrected.
The following motion sensors have specifications that fulfils Kongsberg Maritime
requirements for Doppler shift corrections.
• Kongsberg Maritime – Seapath series
• Applanix – Pos MV
• IXSEA – Phins
Technical specifications