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Advances in Sound Localization part 15

Tham khảo tài liệu 'advances in sound localization part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Localising Cetacean Sounds for the Real-Time Mitigation and Long-Term Acoustic Monitoring of Noise 547 software simulations set bounds as for the concept viability. Detection and bearing estimates could be evaluated for vocalising sperm whales. In addition to the development and use of PAM techniques for mitigation and prevention of ship collisions the challenge to assess the large-scale influence of artificial noise on marine organisms and ecosystems requires long-term access of this data. Understanding the link between natural and anthropogenic acoustic processes is indeed essential to predict the magnitude and impact of future changes of the natural balance of the oceans. Deep-sea observatories have the potential to play a key role in the assessment and monitoring of these acoustic changes. ESONET is a European Network of Excellence of 12 deep-sea observatories that are deployed from the Arctic to the Gulf of Cadiz http www.esonet-noe.org . ESONET NoE provides data on key parameters from the subsurface down to the seafloor at representative locations and transmits them in real time to shore. The strategies of deployment data sampling technological development standardisation and data management are being integrated with projects dealing with the spatial and near surface time series. LIDO Listening to the Deep Ocean environment http listentothedeep.com is one of these projects that is allowing the real-time long-term monitoring of marine ambient noise as well as marine mammal sounds in European waters. In the frame of ESONET and the LIDO project vocalising sperm whales were detected offshore the port of Catania Sicily with a bottom-mounted around 2080m depth tetrahedral compact array intended for real-time detection localisation and classification of cetaceans. Various broadband space-time methods were implemented and permitted to map the sound radiated during the detected clicks and to consequently localise not only sperm whales but also vessels. Hybrid methods