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Range-dependent sonar performance modelling during Battlespace Preparation 2007

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Author: Raa, L.A. te · Lam, F.P.A. · Schouten M.W. · Janmaat, J.
Type:article
Date:2009
Publisher: Nexus Media, Ltd
Place: Swanley, Kent
Institution: TNO Defensie en Veiligheid
Source:UDT Europe 2009 - Conference Proceedings Undersea Defence Technology, 9 - 11 June, 2009, Cannes, France
Identifier: 248183
Keywords: Radar · Sonar Performance · Sound propagation · Oceanographic variability · Oceanographic models · Performance modelling · Detection probability · Forecasting

Abstract

Spatial and temporal variations in sound speed can have substantial effects on sound propagation and hence sonar performance. Operational oceanographic models can provide forecasts of oceanographic variables as temperature, salinity and sound speed up to several days ahead. These four-dimensional forecasts can be used as input for a sonar performance prediction model. This paper presents results of such coupled ocean and sonar performance modelling, carried out during the Battlespace Preparation 2007 sea trial. The new aspect of the work is that the complete modelling chain from ocean forecast to probability of detection plots was carried out in near real-time at sea, aboard HNLMS Snellius (Figure 1).