Research
Assessment of mast
tracking capability of EM3002D using water column imaging, and practical
implementation as part of Dutch Navy operational procedures:
Supervisor: J.E. Hughes Clarke
Initial
trials at the OMG have demonstrated the utility of the water column imaging
capability of a Kongsberg EM3002S for delineating narrow targets like sunken
ships masts. This capability overcomes a lot of the uncertainty associated in
interpreting the spurious outlying bottom track solutions that commonly exist in
the vicinity of wrecks. If this method could be made robust and easy to use, it
would represent an opportunity to cut down on the necessity of bar -sweeping,
currently required as part of Dutch Navy operational procedures.
The
Dutch Navy currently operate EM3002D from their survey launches and are
considering upgrading the EM3000D's on the HOV's. Such systems are capable of
logging water column data. A particular advantage that the dual head systems
have is that they can image out to, and even above, the horizontal. One of the
limitations recognized for the single head systems (only +/- 65deg) is that it
was necessary to run directly over the wreck to see the mast head, which might
be hazardous.
The thesis involves a combination of
software modifications, extending the UNB software to handle dual headed
systems, and field trials.
Ultimately this approach would need to be
implemented in the Navy's current processing system (QINSY). A part of this
project would be to assess the necessary developments needed by QPS to provide
this capability.
Artefacten in multibeam echosounder data (finished June 2007)
Thesis (in dutch) for my Bachelor in Hydrographic Surveying at the Maritime Institute Willem Barentsz. Made at the
Dutch Directorate of Public Works and Watermanagement
(Rijkswaterstaat).
"Artefacten in Multibeam Echosounder data"