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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:posidonia
contenttypeSummary

POSIDONIA II is an ultra-short baseline (USBL) acoustic positioning system for tracking of subsea vehicles.


Sensorweb integration
urnvessel:polarstern:posidonia
contenttypeMetadata
ManufactureriXblue
ModelPOSIDONIA II
Serial No.n/a
Typeultra short baseline positioning systems
REGISTRY-Link↪ REGISTRY (1397)


Sensorweb integration
urnvessel:polarstern:posidonia
contenttypeImages

Image Added Image Added Image Added

Contacts

Sensorweb integration
urnvessel:polarstern:posidonia
contenttypeContacts
Name Institution Role
Ralf KrockerAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchEngineer In Charge, Data Provider

Components

On board Polarstern there are three different antennas available, which can be used alternatively but not at the same time. Flush antenna is permanently mounted in ships keel at ca 11m depth. The antenna is protected by window, which can be opened during operation. Second antenna named deployable antenna is lowered through the moon pool. Third antenna from Thomson Marconi is fixed mounted at a device carrier for moon pool. Active antenna is connected to electronic device named USBL-Box in room E-525a. The control and operation of the system is performed via web-Interface. For Posidonia system are two transponders of type Oceano ET861 and two releasers of type Oceano RT 861 B1S (RT2500 S-Side Bar) on board available. The maximum depth amounts to 6000m. Online data stream of Posidonia is broadcasted via UDP, which can be used by alternative visualisation tools (e.g. PosiView) or for seperately logging.
Metadata (Metadata Plugin)
0Components

Image Added
Doppelreleaser: 2x Oceano RT 861
Image Added
IXSEA Oceano TT801


Position
 Sensorweb integration
urnvessel:polarstern:posidonia
contenttypeLocalFrame
No local frame definition available.
Data logging, storage and archiving
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 Sensorweb integration
urnvessel:polarstern:posidonia
contenttypeParameters
 Parameter  O2ARegistry Output Type  Unit 
daydate and timeunknown
monthdate and timeunknown
yeardate and timeunknown
latitudelatitudedeg
longitudelongitudedeg
raw timedate and times
x-positiondistancem
y-positiondistancem
z-position depthdistancem
transponder numberindexunknown
Central geographical ship's position and time standard
 Metadata (Metadata Plugin)
0timestandard
Time synchronising for USBL-Box is provided by TRIMBLE GPS receiver.
Geographical ship's position and orientation is provided by MRU Ixblue Hydrins.
 Rawdata storage on board 
 Metadata (Metadata Plugin)
0Rawdata
Storage of data in DShip system is established for transponders with number 0 (=antenna), 1, 2, 3 and 4.

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

 Metadata list
|| Device name | POSIDONIA || 
|| Parameters| day; EW; month; NS; position_latitude \[°\]; position_longitude \[°\]; raw_time \[secs\]; transponder_No; transponder No (rel); x \[m\]; y \[m\]; year; z (depth) \[m\] ||
Data archiving on land
After the cruise the DShip data set can be extracted from https://dms.awi.de.
 Metadata (Metadata Plugin)
0DataOnLand

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