Passive stochastic matched filter for Antarctic blue whale call detection
As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizin...
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/77006 2023-05-15T13:46:02+02:00 Passive stochastic matched filter for Antarctic blue whale call detection BOUFFAUT, Léa DRÉO, Richard LABAT, Valerie BOUDRAA, Abdel-O. BARRUOL, Guilhem 2018 https://oskar-bordeaux.fr/handle/20.500.12278/77006 https://doi.org/10.1121/1.5050520 en eng Acoustical Society of America 0001-4966 https://oskar-bordeaux.fr/handle/20.500.12278/77006 doi:10.1121/1.5050520 Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] Article de revue 2018 ftoskarbordeaux https://doi.org/10.1121/1.5050520 2021-05-18T22:30:36Z As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizing its output signal to noise ratio (SNR). These assumptions are well adapted to the passive detection of ABW calls where emitted signals are modified by the unknown impulse response of the propagation channel. A filter bank is computed and stored offline based on a priori knowledge of the signal second order statistics and simulated colored sea-noise. Then, the detection relies on online background noise and SNR estimation, realized using time-frequency analysis. The SMF output is cross-correlated with the signal's reference (SMF þ MF). Its performances are assessed on an ccean bottom seismometer-recorded ground truth dataset of 845 ABW calls, where the location of the whale is known. This dataset provides great SNR variations in diverse soundscapes. The SMF þ MF performances are compared to the commonly used MF and to the Z-detector (a sub-space detector for ABW calls). Mostly, the benefits of the use of the SMF þ MF are revealed on low signal to noise observations: in comparison to the MF with identical detection threshold, the false alarm rate drastically decreases while the detection rate stays high. Compared to the Z-detector, it allows the extension of the detection range of ' 30 km in presence of ship noise with equivalent false discovery rate. Imagerie mantellique du point chaud de La Réunion Other/Unknown Material Antarc* Antarctic Blue whale OSKAR Bordeaux (Open Science Knowledge ARchive) Antarctic The Journal of the Acoustical Society of America 144 2 955 965 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] |
spellingShingle |
Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] BOUFFAUT, Léa DRÉO, Richard LABAT, Valerie BOUDRAA, Abdel-O. BARRUOL, Guilhem Passive stochastic matched filter for Antarctic blue whale call detection |
topic_facet |
Planète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph] |
description |
As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method enhances stochastic signals embedded in an additive colored noise by maximizing its output signal to noise ratio (SNR). These assumptions are well adapted to the passive detection of ABW calls where emitted signals are modified by the unknown impulse response of the propagation channel. A filter bank is computed and stored offline based on a priori knowledge of the signal second order statistics and simulated colored sea-noise. Then, the detection relies on online background noise and SNR estimation, realized using time-frequency analysis. The SMF output is cross-correlated with the signal's reference (SMF þ MF). Its performances are assessed on an ccean bottom seismometer-recorded ground truth dataset of 845 ABW calls, where the location of the whale is known. This dataset provides great SNR variations in diverse soundscapes. The SMF þ MF performances are compared to the commonly used MF and to the Z-detector (a sub-space detector for ABW calls). Mostly, the benefits of the use of the SMF þ MF are revealed on low signal to noise observations: in comparison to the MF with identical detection threshold, the false alarm rate drastically decreases while the detection rate stays high. Compared to the Z-detector, it allows the extension of the detection range of ' 30 km in presence of ship noise with equivalent false discovery rate. Imagerie mantellique du point chaud de La Réunion |
format |
Other/Unknown Material |
author |
BOUFFAUT, Léa DRÉO, Richard LABAT, Valerie BOUDRAA, Abdel-O. BARRUOL, Guilhem |
author_facet |
BOUFFAUT, Léa DRÉO, Richard LABAT, Valerie BOUDRAA, Abdel-O. BARRUOL, Guilhem |
author_sort |
BOUFFAUT, Léa |
title |
Passive stochastic matched filter for Antarctic blue whale call detection |
title_short |
Passive stochastic matched filter for Antarctic blue whale call detection |
title_full |
Passive stochastic matched filter for Antarctic blue whale call detection |
title_fullStr |
Passive stochastic matched filter for Antarctic blue whale call detection |
title_full_unstemmed |
Passive stochastic matched filter for Antarctic blue whale call detection |
title_sort |
passive stochastic matched filter for antarctic blue whale call detection |
publisher |
Acoustical Society of America |
publishDate |
2018 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/77006 https://doi.org/10.1121/1.5050520 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Blue whale |
genre_facet |
Antarc* Antarctic Blue whale |
op_relation |
0001-4966 https://oskar-bordeaux.fr/handle/20.500.12278/77006 doi:10.1121/1.5050520 |
op_doi |
https://doi.org/10.1121/1.5050520 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
144 |
container_issue |
2 |
container_start_page |
955 |
op_container_end_page |
965 |
_version_ |
1766235295883198464 |