Abstract: A method is provided for automatically detecting marine animals, carried out by a detection device. The method includes obtaining acoustic signal measurements collected by at least one acoustic sensor in a underwater environment; and at least one of a first branch for detecting frequency modulated sounds and a second branch for detecting impulsive sounds; each branch comprising a step of detecting sounds by: implementing in parallel several detection channels each having a different and fixed value for at least one degree of freedom; selecting the detection channel having a maximum signal to noise ratio; and comparing the signal to noise ratio of the selected detection channel to a determined threshold. The method further includes taking an alarm decision, indicating the presence of at least one marine animal, as a function of an output of the first branch and/or an output of the second branch.

Abstract: A method is provided for automatically detecting marine animals, carried out by a detection device. The method includes obtaining acoustic signal measurements collected by at least one acoustic sensor in a underwater environment; and at least one of a first branch for detecting frequency modulated sounds and a second branch for detecting impulsive sounds; each branch comprising a step of detecting sounds by: implementing in parallel several detection channels each having a different and fixed value for at least one degree of freedom; selecting the detection channel having a maximum signal to noise ratio; and comparing the signal to noise ratio of the selected detection channel to a determined threshold. The method further includes taking an alarm decision, indicating the presence of at least one marine animal, as a function of an output of the first branch and/or an output of the second branch.