FN Archimer Export Format
PT J
TI Passive stochastic matched filter for Antarctic blue whale call detection
BT 
AF BOUFFAUT, Lea
   DREO, Richard
   LABAT, Valerie
   BOUDRAA, Abdel-O.
   BARRUOL, Guilhem
AS 1:1;2:1;3:1;4:1;5:2;
FF 1:;2:;3:;4:;5:;
C1 Ecole Navale, EA3634, Inst Rech, Arts & Metiers ParisTech, BCRM Brest CC600, F-29240 Brest 9, France.
   CNRS, Inst Phys Globe Paris, Sorbonne Paris Cite, UMR 7154, 1 Rue Jussieu, F-75238 Paris 05, France.
C2 IRENAV, FRANCE
   CNRS, FRANCE
IF 1.819
TC 6
UR https://archimer.ifremer.fr/doc/00600/71179/69530.pdf
LA English
DT Article
CR MD 192 / RHUM-RUM
BO Marion Dufresne
AB 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 thorn 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 thorn MF performances are compared to the commonly used MF and to the Z-detector (a subspace detector for ABW calls). Mostly, the benefits of the use of the SMF thorn 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 similar or equal to 30 km in presence of ship noise with equivalent false discovery rate. 
PY 2018
PD AUG
SO Journal Of The Acoustical Society Of America
SN 0001-4966
PU Acoustical Soc Amer Amer Inst Physics
VL 144
IS 2
UT 000443620700049
BP 955
EP 965
DI 10.1121/1.5050520
ID 71179
ER

EF