| 摘要 |
FIELD: physics, hydrophysics.SUBSTANCE: system for the parametric reception of hydrophysical and geophysical waves in a marine environment is characterised by that the length of the working area of the system corresponds to half the length of the investigated water area, for which a radiating transducer is placed at the centre of the investigated water area and comprises low frequency and infra-low frequency radiators, the former being placed in the water environment while enabling horizontal alignment of the beam pattern thereof towards a receiving transducer, and the infra-low frequency radiator is placed at the bottom to enable pumping of the sea ground, wherein a channel for generating and amplifying emitted pumping signals of the water environment and the sea ground is dual-channel, comprising low frequency and infra-low frequency channels, each including series-connected a stabilised frequency generator, a power amplifier, a unit for matching amplifier outputs with underwater cables, which are connected to corresponding radiating transducers, wherein the receiving transducer is mounted on a carrier ship to allow movement thereof on the perimeter of the water area and includes two vertically spaced apart receiving units, each connected to the receiving channel of the system, comprising series-connected a dual-channel wide-band amplifier of information signals, a unit for measuring phase difference of parametrically converted forward-scattered signals, a converter for converting the time scale of information signals to a high-frequency domain, a narrow-band spectral analysis unit operably connected to a recorder for recording spectra of picked up information signals. The system also comprises a satellite communication unit and means of locating radiating and receiving transducers.EFFECT: invention provides rapid search of hydrocarbon deposits and reception of seismic waves - earthquake precursors.3 cl, 10 dwg |
