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Articles

1988: Vol. LXV No. 2

Application of the DTM-Program TASH for Bathymetric Mapping

Submitted
July 31, 2015
Published
2015-05-13

Abstract

For the new multibeam echosounder ‘Atlas Hydrosweep’ installed on the German research vessel Meteor, an extensive program has been performed in October 1986 in the Bay of Biscay. One part of this test program concerned the generation of contoured bathymetric charts. Data from different positioning systems were available besides the sounding data. After post processing, a three dimensional data set was provided for the computation of a regularly spaced Digital Terrain Model (DTM). As a further step, isolines can be generated from the DTM. Both the computation of the DTM and the plotting of isolines are carried out by the program system TASH of the Institute of Cartography of Hanover University (FRG). Different data sets and different input parameters have been tested aboard Meteor in order to get optimal results for the evaluation of data provided from wide angle sounding systems.