Target echo strength modelling at FOI, including results from the BeTSSi II workshop

TL;DR

This paper reviews various target echo strength modelling methods at FOI, including approximate and high-accuracy codes, and discusses their application to benchmark cases from the BeTSSi II workshop.

Contribution

It provides a comprehensive overview of different modelling techniques and their practical application to benchmark scenarios in target echo strength prediction.

Findings

Range of modelling methods from approximate to high-accuracy codes

Application of models to benchmark cases from BeTSSi II workshop

Illustrations demonstrating code applicability and accuracy

Abstract

An overview of the target echo strength (TS) modelling capacity at the Swedish Defense Research Agency (FOI) is presented. The modelling methods described range from approximate ones, such as raytracing and Kirchhoff approximation codes, to high accuracy full field codes including boundary integral equation methods and finite elements methods. Illustrations of the applicability of the codes are given for a few simple cases tackled during the BeTTSi II (Benchmark Target Echo Strength Simulation) workshop held in Kiel 2014.