METHOD AND DEVICE OF OBTAINING A NODE-TO-SURFACE DISTANCE IN A NETWORK OF ACOUSTIC NODES, CORRESPONDING COMPUTER PROGRAM PRODUCT AND STORAGE MEANS
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Jun 28, 2012
filing date -
Jun 29, 2011
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Abandoned
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Abstract
A method for obtaining a node-to-surface distance between a reference surface and a first node belonging to a network of a plurality of nodes arranged along towed acoustic linear antennas. A plurality of acoustic sequences are sent between the nodes. Each sequence is used to estimate an inter-node distance as a function of a propagation duration of the sequence between nodes. After emission by the first node of a given signal: the first node measures a first propagation duration of a first reflection by the reference surface of the given signal, and a first value of the node-to-surface distance is obtained as a function of that first propagation duration; and/or a second node measures a second propagation duration of a second reflection by the reference surface of the given signal, and a second value of the node-to-surface distance is obtained as a function of that second propagation duration.
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