Audio recording system for underwater monitoring with fast notification for detected sound anomaly

    Security & Future, Vol. 4 (2020), Issue 2, pg(s) 68-71

    To enforce the Republic of Bulgaria’s “Maritime Spaces, Inland Waterways and Ports Act” and EC Decision 2010/477/EU is a need for an underwater monitoring system in the national maritime spaces. As an element of such a system, a prototype of a bottompositioned modular system has been developed at IMS-BAS, designed for reading and recording and transmission of hydro physical, hydro chemical, biological and ecological data for the marine environment, sounds from biological sources and anthropogenic noises, registration and classification of a sound anomaly, a fragment of it is overwritten wirelessly in an autonomous radio beacon, which quickly floats and transmits the information to a base station on a radio channel, and then acts as a radio marker. One of the radio buoys is connected to the central airtight body by a rope wound on a spool. Its purpose is in case of technical problems or pre-programmed to float and signal on a radio channel. After lifting the station to the surface, the recorded information is taken off and maintained.