| 摘要 |
FIELD: hydrophysics.SUBSTANCE: invention relates to hydrophysics, geophysics and radio physics and can be used when generating spatially developed pervious radio hydroacoustic monitoring systems of acoustic and hydrodynamic and electromagnetic fields generated by artificial and natural sources, hazardous effects of atmosphere, ocean and Earth's crust in frequency band covering hundreds-tens-units-fraction of Herz, including extremely low frequency vibrations of moving objects and irregularities of marine environment. Summary: radio-hydroacoustic system for parametric reception of waves of sources and effects of atmosphere, ocean and Earth's crust in marine environment includes: installed on opposite boundaries of controlled medium radiating and at least three receiving acoustic transducers connected to radiating and receiving paths, respectively, formed between them three zones of nonlinear interaction pervious and information waves. Proposed radio-hydroacoustic system differs by fact that working zone of nonlinear interaction and parametric conversion pervious and information waves formed in vertical plane medium as multi-beam spatially developed transmissive parametric antenna. For this purpose there are three omnidirectional radiating transducers, vertically arranged in centre of water area and installed on axis, below and above axis of underwater audio channel (UAC). Receiving transducers are integrated into three identical units arranged in vertical plane along isosceles triangles, which are arranged relative to axis UAC similarly radiating units and are arranged in circle and (or) perimeter on opposite boundary of water area. At that, output of receiving channel through transmitting radio unit is connected to information-analytical centre, which output via radio channel is connected to radiating channel signal generation system. Multichannel scanning parametric system is formed as complex vertical multi-beam parametric antennas, arranged in circle or perimeter of water area through 45° and directed radially from radiating center to periphery. Distance between acoustic transducers receiving units in vertical plane is set in accordance with correlation characteristics of structure of transmissive acoustic field. Transmissive radio-hydroacoustic system can be scaled (increased) by combination of measured information with similar subsystems, formed on adjacent water areas, in information-analytical centre using radio communication channels. Frequency band of received waves of different physical nature is hundreds-tens-units-fraction of Herz, including extremely low frequency vibrations of moving objects as whole.EFFECT: technical outcome is far parametric reception in marine environment waves of different physical nature (acoustic, electromagnetic, hydrodynamic) generated by natural and artificial sources, phenomena and processes of atmosphere, ocean and Earth's crust.4 cl, 15 dwg |
