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Please note that operations of the Multibeam Echo Sounder Hydrosweep DS3 requires experienced scientific staff on board and can be only operated upon request. The system is not operated by the ship's crew. Request operations with the Multibeam Echo Sounder Hydrosweep DS3 to AWI-Bathymetry and AWI-Logistics in sufficient time prior to the cruise and clarify the data transfer after the cruise.

The Multibeam Echo Sounder uses several frequencies to map the topography of the seafloor. It also provides information about the texture of the seafloor as well as the structure of the water body.

13-17 kHz

The system consists of hull-mounted transducers, top side hardware and operation software.

Time synchronising of the computers is regulated via Polarstern GPS.
Geographical ship's position via HYDRINS centering to HYDRINS offset correction in AHC. 

Mass data: The data acquisition and processing software creates rawdata to the directory structure of the mass storage. A reduced data set is also stored in DShip sytem.

|| root directory | data01 ||
|| directory name | CruiseNo \\ e.g. \\ ANT25_3 ||
|| file name | HS3PHF_YYYY-MM-DDThhmmssZ_XXXXXXXX.asd.acf ||
|| Data volume (MB per day) ca | 4000 || 
|| Number of files per day ca | 48 ||

Reduced set of measurement data.

|| Device name | hydrosweep || 
|| Parameters | depth \[m\] ||

After the cruise, the operator transfers the measurement data along with required meta data to AWI after consultaion with the data scientist and AWI Logistics. Then, the data including meta data can be extracted from https://www.pangaea.de/ (for authorized users only). The reduced DShip data set can be extracted from https://dms.awi.de.

|| File format(s) | *.asf, *.hsx || 
|| Calibration certificates | NO ||

• Kalibrierung und Genauigkeitsuntersuchungen zur neuen Hydrosweep DS-3 Anlage auf FS Polarstern (Article, 38 kB)
    Bachelor Thesis 2011
• HydroSweep DS (Factsheet, 978 kB)