The mounting of USBL antenna is executed by ships crew, the operation of the system must be executed by experienced scientific staff. The need of the system has to be announced in cruise planning docment "Einsatzplanung" prior to the cruise.

In case of sea ice conditions the system must be operated with no ship speed but following ROV or drifting is allowed. In free ice conditions moving of ship is allowed up to 5 knots speed using deployable antenna or maximum ship speed using flush antenna or Thomson Marconi antenna. In case of deployable antenna or Thomson Marconi antenna preparation takes ca 45 minutes: removing ice protection of moon pool and lowering antenna. The reverse procedure for deinstallation takes the same time. In case of flush antenna the ice protection window must be opened which takes a few moments.

Opening angle for transponder detection amounts to 60 degrees. The detection range amounts to 8000m.

Posidonia system is not compatible with USBL system Global Acoustic Positioning System (GAPS), which is also available on board.

Summary

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


Manufacturer iXblue
Model POSIDONIA II
Serial No. n/a
Type ultra short baseline positioning systems
REGISTRY-Link ↪ REGISTRY (1397)


Contacts

Name Institution Role
Ralf Krocker Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Engineer In Charge, Data Provider

Components


Doppelreleaser: 2x Oceano RT 861
IXSEA Oceano TT801


Position
No local frame definition available.
Data logging, storage and archiving
Logged parameters

                

                    
                        

                            
                                Parameter
                            
                            
                                O2ARegistry Output Type
                            
                            
                                Unit
                            
                        

                    
                    
            
                        

                            day
                            date and time
                            unknown
                        


                        

                            month
                            date and time
                            unknown
                        


                        

                            year
                            date and time
                            unknown
                        


                        

                            latitude
                            latitude
                            deg
                        


                        

                            longitude
                            longitude
                            deg
                        


                        

                            raw time
                            date and time
                            s
                        


                        

                            x-position
                            distance
                            m
                        


                        

                            y-position
                            distance
                            m
                        


                        

                            z-position depth
                            distance
                            m
                        


                        

                            transponder number
                            index
                            unknown
                        


                    

                
Central geographical ship's position and time standard
 Rawdata storage on board 
Dship

Data archiving on land

Documentation