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The Sonar Doppler Speed Log (DO-Log) is part of nautical equipment. The operation belongs to the bridge only. !!! New The new DO-Log system was installed in December 2017 !!! |
Summary
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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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270 kHz |
Contacts
Contacts
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Components
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The system consists of two transducer elements installed in the ship's keel. The transducers can alternatively be used, e.g. one is backup. Electronic cabinet is mounted in Gravitymeter Room F-632. Hydro |
Subdevices
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
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??? Time synchronising ??? | ||
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Rawdata storage on board
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Data storage in DShip system.
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Metadata list | ||
Dship
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| Uncorrected measurement data||||
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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) ??? |
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|| File format(s) | ??? ||
|| Calibration certificates | ??? || |
Documentation
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Documentation
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