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Comment: Automatically updated by Registry2Confluence-Transporter (polarstern@ingestsrv1, ask o2a-support@awi.de for questions)

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Sensorweb integration
urnvessel:polarstern:do-log
contenttypeSummary

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.


Sensorweb integration
urnvessel:polarstern:do-log
contenttypeMetadata
ManufacturerSkipper Electronics A/S
ModelDL850
Serial No.Transducer 1 S/N: 17889, Transducer 2 S/N: 17895
Typespeed log
REGISTRY-Link↪ REGISTRY (626)


Sensorweb integration
urnvessel:polarstern:do-log
contenttypeImages

Image Added Image Added Image Added Image Added


Transducer Frequency:

270 kHz
Metadata (Metadata Plugin)
0Frequency
Contacts
 Sensorweb integration
urnvessel:polarstern:do-log
contenttypeContacts
 Name  Institution  Role 
Reederei LaeiszF. LaeiszEngineer In Charge

Components
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. Hydroacoustic frequency amounts to 270 kHz. Transducer 1 S/N: 17889; Transducer 2 S/N: 17895.
 Metadata (Metadata Plugin)
0Components
Subdevices
 Sensorweb integration
urnvessel:polarstern:do-log
contenttypeSubdevices
 Name  Model  Serial Number  REGISTRY-Link 
DOLOG_1A transducerDOLOG n/a↪ REGISTRY (1442)
DOLOG_1B transducerDOLOG n/a↪ REGISTRY (1443)
DOLOG_2 transducerDOLOG n/a↪ REGISTRY (1444)

Position
 Sensorweb integration
urnvessel:polarstern:do-log
contenttypeLocalFrame
Infoxyz-position calculated from Alignment Survey Report RV Polarstern (June 2016), transducer located in box keel, electronics located on F-deck room F632
X69.366 m
(X-0 is at the center of der rudder (ref. design drawing of the vessel), positive X-axis is forward and along vessel centerline) 
Y0.415 m
(Y-0 at centerline, positive Y-axis is portside)
Z0.014 m
(Z-0 is set to the lowest point of the keel, positive Z-axis is upwards) 

Data logging, storage and archiving
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 Sensorweb integration
urnvessel:polarstern:do-log
contenttypeParameters
 Parameter  O2ARegistry Output Type  Unit 
speed bottomtrack acrossspeedknot
speed bottomtrack aheadspeedknot
speed watertrack acrossspeedknot
speed watertrack aheadspeedknot

Central geographical ship's position and time standard
Time synchronising is regulated by DShip.
Geographical ship's position is provided by DShip.
 Metadata (Metadata Plugin)
0timestandard
 Rawdata storage on board 
 Metadata (Metadata Plugin)
0Rawdata
Data storage in DShip system.

Dship
Uncorrected measurement data.
 Metadata (Metadata Plugin)
0DShip

|| Device name | DO-Log || 
|| Parameters| speed bottomtrack across \[kn\]; speed bottomtrack ahead \[kn\]; speed watertrack across \[kn\]; speed watertrack ahead \[kn\] ||
 Metadata list
Data archiving on land
 Metadata (Metadata Plugin)
0DataOnLand
After the cruise the DShip data set can be extracted from https://dms.awi.de.


|| File format(s) | *.txt || 
|| Calibration certificates | NO ||
 Metadata list
Documentation
 Sensorweb integration
urnvessel:polarstern:do-log
contenttypeResources