Table of Contents
Advertisement
Quick Links
Global Acoustic Positioning System (GAPS)
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.
Mounting of antenna takes ca. 45 minutes: removing ice protection of moon pool and lowering GAPS antenna. The reverse procedure for
deinstallation takes the same time.
In case of sea ice conditions the system must be operated with no ship speed but following ROV or drifting is allowed. In ice free conditions
moving of ship is allowed up to 5 knots. Opening angle detecting transponders theoretically amounts to 200 degree. But you need to take the
obstruction by means of ships hull into account.
In the actual version there is no compatibility to USBL system
Online data stream of GAPS is broadcasted via UDP, which can be used by alternative visualization tools (e.g. PosiView) or for seperately
logging.
Gaps underwater communication is conducted by using various frequencies, interferences with simultaneously operating
possible.
Attention: Submarine cable must be connected and device must be submerged in water through moonpool in box keel
Summary
The Global Acoustic Positioning System (GAPS) combines an ultra-short baseline (USBL) acoustic positioning system and an inertial navigation system
(INS) in the same housing to provide accurate position of any subsea object supplied with a transponder. Operating range is up to 4000m water depth with
accuracy 0.2 percent of the distance to the object. The registration angle of 200 degree also enables position detection nearby sea surface. Electronic
device ECB (Easy Connection Box) is installed in echo sounder device room E-525a. Operation is performed by software MMI.
iXblue
Manufacturer
GAPS II
Model
430 9000-129
Serial No.
ultra short baseline positioning systems
Type
SENSOR-Link
POSIDONIA
(USBL-Box), which is also available on board Polarstern.
Echo Sounders
are
before
activating GAPS.
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for iXBlue GAPS II
Summary of Contents for iXBlue GAPS II
- Page 1 0.2 percent of the distance to the object. The registration angle of 200 degree also enables position detection nearby sea surface. Electronic device ECB (Easy Connection Box) is installed in echo sounder device room E-525a. Operation is performed by software MMI. iXblue Manufacturer GAPS II Model 430 9000-129 Serial No.
- Page 2 Transducer Frequency: GAPS: from 22 to 30 kHz; Transponder: 19.5, 20.0, 20.5 or 21 kHz Contacts Name Institution Role Ralf Krocker Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Engineer In Charge, Data Provider Components The system consits of the GAPS itself, mounting for installation in box keel, Easy Connect Box (ECB) and monitoring software "GAPS MMI - Man Machine Interface".
- Page 3 Easy Connect Box (ECB): ECB is a small interface to connect GAPS, external GPS receiver, PC with MMI-software and data management system DShip. ECB is mounted to the 19" Rack in room E-525a. The rearward switch activates the ECB, the front switch activates the GAPS. GAPS MMI - Man Machine Interface - Software: The MMI-Software starts the GAPS and tracks the underwater transponders.
- Page 4 Data archiving on land After the cruise the DShip data set can be extracted from https://dship.awi.de/ *.txt File format(s) Calibration certificates Documentation GAPS_datasheet (Factsheet, 479 kB) GAPS Positioning System User Manual (User Manual, 21 MB) GAPS Carbon V.1 User Guide (User Manual, 12 MB) GAPS techical description (Factsheet, 4 MB) GAPS technical drawing (Factsheet, 542 kB)
Need help?
Do you have a question about the GAPS II and is the answer not in the manual?
Questions and answers