Array-type ocean acoustical signal measurement system

Abstract

The invention discloses an array-type ocean acoustical signal measurement system. Multiple single channel ocean acoustical signal measurement instruments (NTD) are alternatively fixed on a plastic-wrapped steel cable. Two ends of the plastic-wrapped steel cable are conducted with seawater. A floating body at an upper end of the plastic-wrapping steel cable and a lead fish at a lower end of the plastic-wrapping steel cable are in a vertical state in the ocean. Each NTD is internally provided with a hydrophone and a temperature and salinity sensor. A host computer magnet ring on the plastic-wrapping steel cable, a node magnet ring of each NTD, the plastic-wrapping steel cable and the sea water form a coupling circuit. The NTDs obtain acoustical signals and temperature and depth information which are transmitted to an instrument cabin in the floating body through the coupling circuits and which are sent to a ground reception station via a Beidou all-in-one machine arranged on the floating body. The array-type ocean acoustical signal measurement system provided by the invention can synchronously obtain ocean acoustical signals at different depths according to needs, provides accurate basic data for the research on ocean acoustical environments, and has a wide application prospect.

Description

technical field [0001] The invention relates to an ocean monitoring device, in particular to an ocean acoustic signal measurement system. Background technique [0002] For a long time, the lack of basic data on the ocean acoustic environment and the weak means of ocean acoustic observation have not been effectively resolved. In recent years, with the development of marine science and technology in our country, there is an urgent requirement for marine acoustic environmental information. At present, the observation of marine environmental acoustic signals mainly uses multi-component integrated hydrophone arrays, and ocean acoustic signals at different depths of water are simultaneously acquired according to needs during measurement. [0003] The existing multiple integrated hydrophone arrays are mainly cable arrays and solid rubber arrays, and there are obvious deficiencies in the use process: the hydrophone positions of the hydrophone arrays are fixed according to the pre-d...

AI Technical Summary

Problems solved by technology

[0002] For a long time, the problems of lack of basic ocean acoustic environment data and weak ocean acoustic observation methods have not been effectively resolved

[0003] The existing multiple integrated hydrophone arrays are mainly cable arrays and solid rubber arrays, and there are obvious deficiencies in the use process: the hydrophone positions of the hydrophone arrays are fixed according to the pre-design, and the hydrophones are fixed after the array is formed. The position is not easy to change. When the measurement needs to change the position of the hydrophone, the array must be remade. The array material cannot be recycled, resulting in waste of resources

Moreover, once a hydrophone is short-circuited or disconnected, the entire array will not work normally, resulting in incomplete measurement data

Images