Kongsberg EM 2040 MKII, Installation Manual

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External sensors requirements
The external sensors must fulfil these requirements to achieve the specified performance
for the EM 2040 MKII system. Check with your sensor supplier if the sensor accuracy
requirements are met and the required formats are supported.
Sensor accuracy
Velocitiy sensor accuracy requirements
• Velocity: 0.03 m/s RMS
• Roll, pitch and yaw rate: 0.03 deg/s RMS
• Latency: Maximum 5 ms
• Update rate: 100 Hz
Motion sensor accuracy requirements
The accuracy of the sensor data, as specified by the sensor manufacturer, must fulfil
(preferably surpass) the following requirements.
•
Roll:
0.02 degrees RMS
An accuracy of 0.05 degrees RMS can be accepted unless you have very long pulse
length and large beam angles.
•
Pitch
: 0.05 degrees RMS
•
Heading
: 0.2 degrees RMS
•
Heading
: 0.2 degrees RMS
•
Heave
: 5 cm or 5% whichever is highest (real-time output)
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.
KONGSBERG supports a large range of sensor suppliers in addition to our own
Kongsberg Seatex systems.
KONGSBERG EM 2040 MKII Installation Manual