Attention:
The need of the system has to be announced in cruise planning document "Einsatzplanung" prior to the cruise.
The mounting of USBL antenna is executed by ships crew, the operation of the system must be executed by experienced scientific staff.
GAPS underwater communication is conducted by using various frequencies, interferences with simultaneously operating Echo Sounders are possible.
Attention: Submarine cable must be connected and device must be submerged in water before activating GAPS.
Summary
Transducer Frequency:
Contacts
Components
The system consists of the GAPS antenna itself, mounting for installation at the ships bottom, the Easy Connect Box (ECB) and monitoring software "GAPS MMI - Man Machine Interface". The transponders can be mounted to winch wire or to a submarine vehicle or other submarine object.
GAPS is a bi-directional acoustic positioning system, which communicates between ship (antenna) and one or more transponders. Positions of the transponders are determined relative to the ship or absolute in geographic frame. GAPS must be installed with custom-built mounting and is operated below the ship's hull. It is deployed via the Hydrographenschacht.
The acoustic transponders must be mechanically attached to underwater objects or vehicles. The transponders are synchronized to the GAPS and can be operated in transponder-mode (acoustic transmission and receiving) or in responder-mode (electric transmission and acoustic receiving; cables and plugs for responder-mode are not available on board).
The Easy Connect Box (ECB) is a small interface to connect GAPS, external GPS receiver, PC with MMI-software and data management system DShip.
The GAPS MMI - Man Machine Interface - Software starts the GAPS and tracks the underwater transponders.
Position
Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
Centering of GPS-antenna position to GAPS and to transponders.
Rawdata storage on board
Dship
Device name |
GAPS |
|---|---|
Parameters |
day; depth [m]; EW; latitude [°]; longitude [°]; month; NS; time in hours; transponder no sag; transponder no sax; x coordinate [m]; y coordinate [m]; year; z coordinare [m]; pitch [deg]; roll [deg]; heading std dev [deg]; pitch std dev [deg]; roll std dev [deg]; altitude std dev; latitude std dev; longitude std dev; heading [deg] |
Data archiving on land
.File format(s) |
*.txt |
|---|---|
Calibration certificates |
NO |