Design of Acoustic Signals for a Seal Deterrent Device

2021
Artūrs Āboltiņš, Juris Grizāns, Dmitrijs Pikuļins, Māris Tērauds, Māris Zeltiņš

During the past decade, attacks by grey seals on fishing nets in the Baltic Sea have caused considerable loss of fish catch and damage to fishing gears. One of the approaches to reduce the number of seal attacks on fishing nets is to use acoustic deterrent devices (ADDs). Unfortunately, most of the commercially available ADDs are not well suited to the deployment in the sea and require considerable additional investments. The objective of the present research is to develop a compact and cost-efficient ADD for deployment in the sea environment. This paper is devoted to the design of acoustic signals for a prototype ADD. Signals from other experimental and commercially available ADDs are studied and compared. Moreover, limitations imposed by the underwater environment, transducers, battery power, and fish hearing are analysed and considered during the development of signal patterns. The results of tests conducted in an artificial reservoir and in the sea are presented.

Atslēgas vārdi
Acoustic applications; Acoustic measurements; Acoustic wave; Seals; Signal synthesis; Underwater acoustics; Underwater communication
DOI
10.2478/ecce-2020-0011
Hipersaite
https://www.sciendo.com/article/10.2478/ecce-2020-0011

Āboltiņš, A., Grizāns, J., Pikuļins, D., Tērauds, M., Zeltiņš, M. Design of Acoustic Signals for a Seal Deterrent Device. Electrical, Control and Communication Engineering, 2021, Vol. 16, No. 2, 72.-77. lpp. ISSN 2255-9140. e-ISSN 2255-9159. Pieejams: doi:10.2478/ecce-2020-0011

Publikācijas valoda
English (en)