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FOT - a tool for geoacoustic survey planning and resources optimization

SiPLAB, University of Algarve, Campus de Gambelas,
PT-8005-139 Faro, Portugal

Comments: download file (cintal_rep).
Ref.: SiPLAB Report 01/18, SiPLAB, University of Algarve, January 2018.

Project WiMUST aims at developing, and testing at sea a fully unmanned solution for shallow water high-resolution geoacoustic surveying of the sub-bottom sediment layers, using multiple autonomous underwater vehicles (AUV) carrying short hydrophone arrays. The freedom of movement of the fleet of AUVs requires careful mission planning and coordinate vehicle navigation and control to keep formation among vehicles and relative to the source(s). The ensemble of hydrophone receivers carried by the AUV fleet effectively behaves as a distributed sensor array that, together with the source(s) field, forms a survey geometry. This report discusses strategies for determining survey geometries for optimal or near optimal bottom properties estimation based on a priori environmental data of the survey area. These strategies are then implemented under the form of a computational tool, the so-called Formation Optimization Tool (FOT), an important tool for survey resources planning and an expected maximum performance indicator. The assertions of FOT are demonstrated based on the example of preparation of the Survey’17 experiment scheduled to take place in the area of Portinho da Arrábida, west coast of Portugal, in January 2018.

ACKNOWLEDGMENT: this work was supported by project WiMUST under EU H2020, contract 645141.