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The Sonar Doppler Speed Log (DO-Log) is operated by ship's command only. |
Summary
part of nautical equipment. The operation belongs to the bridge only. The new DO-Log system was installed in December 2017. |
Summary
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The Doppler log measures speed through water by using the Doppler effect of sound signal reflected from the seafloor or from suspended matter in the water column. Two transducer are installed in the ships keel and can be alternatively used. Hydroacoustic frequency amounts to 270 kHz. |
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Transducer Frequency:
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Contacts
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Components
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??? |
Subdevices
Position
Subdevices
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Position
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Data logging, storage and archiving
Logged parameters
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Central geographical ship's position and time standard
Metadata (Metadata Plugin) | ||
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??? Time synchronising ??? |
Metadata (Metadata Plugin) | ||
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??? geographical ship's position ??? |
Rawdata storage on board
Metadata (Metadata Plugin) | ||
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???
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Dship
Metadata (Metadata Plugin) | ||||
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| Data storage in DShip system:||||
Metadata list |
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Data archiving on land
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After the cruise the DShip data set can be extracted from https://dms.awi.de.
??? https://www.pangaea.de/ (for authorized users only) ??? |
Metadata list |
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|| File format(s) | ??? ||
|| Calibration certificates | ??? || |
Documentation
...
Metadata list |
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Documentation
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