Hydroacoustic self-contained wave recorder |
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IPC classes for russian patent Hydroacoustic self-contained wave recorder (RU 2484428):
 System for towing overboard seismic equipment / 2483331
System for towing overboard seismic equipment has a vessel which has a body 2 and a bottom 3, top 4 and bottom 5 decks, a stern 6 having a stern transom 7, seismic wrenches 8 and input cables 9 which are connected to seismographic ropes 10, a umbilical wrench 11 and an input cable 12 connected to a line 13 of pneumatic seismic sources. A protective device for each seismographic rope 10 is in form of a tubular channel 14, lying inside the stern 6 of the body 2 of the vessel 1. The tubular channel 14 is made from and inclined 15 and a horizontal 16 part, which form one tubular space for stripping seismographic ropes 10 in the outside water. A protective device for the line 13 of pneumatic seismic sources is form of a stern ice lug 22 with a streamlined shape, consisting of a waterproof part 23 and a cowling 24. The cowling 24 is a closed structure with an outer slip 26 for stripping the line 13 of pneumatic seismic sources.
Method of detecting seismic signals on sea area when searching for underwater deposits of hydrocarbons / 2483330
Disclosed is a method of detecting seismic signals on a sea area when searching for underwater deposits of hydrocarbons, in which the coastal area of the shelf plate is fitted with pairs of gradiometric seismic detectors which pick up seismic vibrations in the range from 0.1 to 20 Hz. Detecting elements of each pair of seismic detectors are turned from each other in the azimuth by 45 degrees. At frequencies from 0.003 to 0.1 Hz, microseismic vibrations are picked up, starting with frequency from 0.003 Hz. The seismic detectors are sunk into the sea bottom at a depth of 20-150 m by drilling a well; zero buoyancy buoys are placed at the well entry, said buoys being fitted with an anchor load and an electromagnetic circuit breaker, connected by a conducting rope to the seismic detector and fitted with a unit for recording seismic signals and a satellite communication channel.
 Underwater cable and sensor unit / 2483329
Group of inventions includes a cable segment of an underwater cable, an underwater cable and a sensor unit for the underwater cable. The underwater cable consists of a series coaxially placed cable segments which alternate with sensor units. Each sensor unit has an outer housing with an interior cavity in which a sensor module is suspended by a cradle. Vanes on the sensor module pass through axially elongated openings in the outer housing to dig into the seabed to provide good seismic coupling between the seabed and pressure sensors and motion sensors housed in the sensor module. The outer housing is removable and consists of two complementary parts which clamp firmly onto the ends of adjacent cable segments. Axial channels are formed in outer housing on opposite sides of the sensor module for receiving stress members, which, along with the cradle, provide seismic isolation between the cable segments and the sensor modules.
 Bottom drag-resistant self-contained hydroacoustic module / 2481594
Disclosed is a bottom drag-resistant self-contained hydroacoustic module which is fitted with subsystems and devices which are placed in the housing of the bottom module and on the conducting rope of a vertical hydroacoustic antenna and facilitate operation of the module. On the conducting rope of the hydroacoustic antenna there is a float, hydrophones, a transceiving unit for acoustic underwater communication. In the housing of the bottom part of the module there is a subsystem for collecting and preprocessing information from all sensors mounted on the vertical antenna, a subsystem of geographic coordinates of the module. Drag-resistance of bottom self-contained hydroacoustic module is provided by that the housing of the bottom part of the module consists of two flattened cones. The bottom flattened cone faces the mud line with its large base and the small base is mated with the top flattened cone and has a surface inclination angle of 30-40 degrees. The top flattened cone is mated with the bottom cone by its large base and has a surface inclination angle of 10-20 degrees.
 Method of searching for mineral deposits using submarine geophysical vessel / 2480793
Hydroacoustic probing of the investigated region is carried out using radiation of intense acoustic signals, less intense low-frequency acoustic signals and pumping waves in the direction of the bottom. Reflected signals are received and used for prediction purposes. Investigations are carried out using a submarine geophysical vessel having an anaerobic main propulsion plant. The submarine vessel is laid on the ground, thereby achieving the minimum level of its underwater hydroacoustic and hydrodynamic fields. Information features also used are the shape of the spectrum of the relatively narrow and wide frequency bands, the shape of the spectrum of high-frequency modulation acoustic and electromagnetic frequencies, and the signal-to-noise ratio.
 Method and apparatus for predicting tsunami and determining epicentre thereof / 2473930
Apparatus for realising said method includes a seismic station, spatially distributed underwater channels with hydrophones, and a radio channel connected to the seismic station. Each of the spatially distributed underwater channels with radiophones includes: a connected group of separate buoys with radio communication modules, a neutral buoyancy conducting rope, a power supply and data processing module, two vertical groups of hydrophones, three water pressure sensors and a bottom seismic pickup. An earthquake signal is detected at the seismic station. The epicentre region and the magnitude of the earthquake are determined. Hydroacoustic signals generated by the earthquake are received by the hydrophones lying underwater. Tsunami information is transmitted over the radio channel. Also, underwater earthquake signals are detected by the distributed system of bottom seismic pickups. The distributed system of hydrophones is switched to a time-gated standby mode. Arrival signals of the hydroacoustic wave are detected by the distributed system of hydrophones. Water pressure change signals are detected at a certain calculated time interval by the spatially distributed system of water pressure sensors. Signals of the group of hydrophones and water pressure sensors and their coordinates are used to determine the azimuthal direction of the front of the water wave and the tsunami wave, energy parameters of the tsunami wave, the epicentre of the tsunami wave and time characteristics associated with the prediction of the movement of the tsunami wave.
 Towed underwater vehicle equipped with hydroacoustic equipment for sludged objects and pipelines / 2463203
Invention relates to underwater works for seafloor sounding in order to perform bottom shaping, pipeline laying-out with binding to geographical coordinates, revelling sludged objects. Towed underwater vehicle is equipped with hydroacoustic equipment and made as hollow cylindrical housing with removable head and tail fin, provided with penetrating device and equipped with parametrical profile recorder and control and computation module, and is connected with towing vessel by strength-power communications cable. Stabilising fin consists of two planes forming X-shaped structure. Penetrating device is made as horizontal wing and two vertical wings mounted on half-axles located in transversal plane relative to cylindrical housing. On the horizontal wing, towing assembly with sealed connector for strength-power communications cable attachment is installed. Here, hydrodynamic penetrator is installed. In the lower part of cylindrical housing in niche, crate with parametrical profile recorder elements attached to it is mounted. Hydroacoustic equipment includes parametrical profile recorder, consisting of emitting parametrical pumping antenna and receiving antenna, facilities for processing and recording hydroacoustic signals.
 Apparatus for profile shooting of deep-water sea shelf by laying seismic cables on sea floor using underwater carrier and method of mounting said apparatus on sea floor / 2460096
Disclosed is an apparatus for investigating the bottom structure of a deep-water sea shelf in a 3D model by laying seismic cables on the sea floor. The apparatus consists of two parts. The housing of each part of the apparatus is in form of two pontoons connected to each other by elements which are uniform on type. Both parts of the apparatus are connected into a single system by a cable installed by an unmanned underwater vehicle. The apparatus is delivered and installed at an operation point by a multifunctional underwater station and is kept in the working position by an anchor system. Seismic cables of the apparatus are laid on the sea floor also by the multifunctional underwater station using stabilisers whose position at the final point is fixed by an anchor.
 Hydroacoustic trailing antenna for geophysical work / 2458359
Antenna has piezoelectric receivers consisting of two identical sensitive piezoelectric elements, sealed housings in which there are electronic boards with differential amplifiers, whose inputs are connected antiphase to the sensitive piezoelectric elements and the outputs to analogue-to-digital converters, whose outputs are connected to a digital communication line, a power line and power cable made of elastic fibres; the sensitive elements are made from a piezoelectric film with an electroconductive electrode coating deposited on its surface and attached to it; the housing is in form of thin-walled cylinders made of plastic on whose inner surface there are two identical sensitive film-type piezoelectric elements made from an electrically polarised piezoelectric film. The films are attached to the inner surface of the cylinders by sides with opposite polarity of electric polarisation, and the ends of the cylindrical housings are closed by covers.
 Method of performing underwater-subglacial geophysical exploration using submarine vessel / 2457515
Bottom of the water body is illuminated at the nadir using a radiator (2) mounted on a cruising submarine vessel (1). The radiator (2) is in form of at least one source of coherent broadband low-frequency acoustic radiation with power in the order of 1 kW or higher. Reflected radiation is picked up by acoustic receivers (4) rigidly mounted on the submarine vessel (1). The received signals are processed using a correlation technique.
 Method of reconstructing sea-floor relief when measuring depth using hydroacoustic apparatus / 2466426
Depth is measured with determination of an adjustment which is determined by the point where the hydroacoustic apparatus is installed. Vertical distribution of sound speed in water is determined from reflected signals. The sea-floor relief is reconstructed. The boundary zone which separates the continental slope from the shelf is selected from the obtained measurement results. The planetary structure of the sea-floor in the transition boundary zones between the slope and the shelf is determined by probing the sea-floor with acoustic waves and measuring the magnetic field. A tectonic map of transition boundary zones is constructed from the measurement results, from which the boundary of the continental shelf is determined by comparing planetary structures in transition boundary zones and planetary structures on dry land. The tidal level is additionally varied when measuring depth.
 Hydroacoustic system for imaging underwater space / 2461845
Hydroacoustic system for imaging underwater space has antenna units for the portside and the starboard 1 and 1', receiving amplifiers 2 and 2', analogue-to-digital converters 3 and 3', power amplifiers 4 and 4', a multi-beam echo sounder antenna 5, receiving amplifier units 6, analogue-to-digital converter units 7, a power amplifier unit 8, a roll measuring device 9, a depth measuring device 10, a module for generating, receiving and packing signals 11, an interface unit 12, a navigation system 13 and an on-board computer 14. The invention provides a continuous band for scanning the bottom owing to that the invisibility band of the antennae of the portside and the starboard overlaps with the multi-beam echo sounder; formation of the bottom relief in real time, higher accuracy and reliability of imaging the relief due to high accuracy and reliability of eliminating ambiguity when calculating phase shift on antennae.
 Apparatus for determining corrections to depth measured by echo sounder when mapping bottom topography of water body / 2461021
Apparatus has a multibeam echo sounder 1, a recorder 2, a control unit 3, a unit for determining corrections 4, a measuring receiving unit with an antenna 5, a transmitter with an antenna 6, sensors for measuring sound speed 7, 8, a measuring receiving unit with an antenna 9, a transmitter with an antenna 10, water temperature sensors 11, 12, hydrostatic pressure sensors 13, 14, a relay 15, a communication channel 16 of a satellite radio navigation system, horizontal and vertical displacement sensors 17, a magnetic compass 18, a stabiliser gyrocompass 19, a hydroacoustic communication channel 20, a relative velocity metre 21.
 Method of surveying bottom topography of water body and apparatus for realising said method / 2439614
Disclosed method employs reference depths and coordinates (depths and coordinates on the surveyed water body) and calculation of increments of depths and coordinates as a difference between two adjacent distance vectors measured by a multi-beam echo sounder. That way, each depth and its geodesic coordinates are calculated as a sum of increments of adjacent depths and their geodesic coordinates, starting with the depth and geodesic coordinates of the point of the reference depth. A device for realising the method is also disclosed.
 Method of surveying bottom topography of water bodies and apparatus for realising said method / 2434246
Sonar probing of the bottom is additionally carried out using a sonar sensor and/or surveying echosounder placed at different depth horizons from ship-borne hydroacoustic apparatus with possibility of movement thereof in the vertical and horizontal plane via sector scanning with scanning of directional characteristics in radiation mode of a parametric antenna with reception of reflected signals with an antenna of the same dimensions as the excitation antenna of the parametric antenna, wherein the width of the directional characteristic in reception mode is greater than the value of the angle of view, and the scanning plane of the antenna deviates from the vertical location position by an angle of 15 degrees towards the side of movement of the ship. A device for implementing method is also disclosed.
 Method of reconstructing sea bottom relief in depth measurement by hydroacoustic means and device to this end / 2429507
Invention may be used in executing meteorological interpolations including analysis of wind fields, radiological and chemical contamination, topographical interpolations and solving other problems, for example, research of ocean, applied problems caused by necessity in sea bed mapping to support research and design works in sea areas.
 Method for forming of image of sea vessel contour according to radar surveillances / 2308055
A matrix is formed that contains echo-signals from the target and from the surface sea waves, whose columns serve as radar observation rules corresponding to the angular positions of the radar antenna, a bipolar matrix of wavelet-spectra is obtained, the elements of the like polarity that don't contain wavelet spectra of the echo-signals from the sea vessel hull are excluded from the matrix of the wavelet-spectra, the value of the binomization threshold is determined, binomization of the matrix of the wavelet-spectra is accomplished, the vessel image is separated by processing of the binomized matrix of the wavelet-spectra by a morphological filter.
Method of visualization of navigational situation in ship handling / 2281529
Proposed method includes storage of electronic radar chart of terrain, determination of radar antenna position, correlation of specific features of terrain and points of interest; electronic radar chart of terrain is formed during processing radar information and is stored in form of sequence of radar images recorded during test run of ship equipped with surveillance radar, personal computer, equipment for tie-in of surveillance radar with personal computer and equipment of satellite navigational system. Then, present radar image is compared with electronic radar chart to estimate deviation of ship from preset route and reliability of information received from satellite navigational system and surveillance radar. Position of surveillance radar antenna, coordinates of radar image centers used for forming electronic radar chart of terrain and center of present radar image are determined by tie-in of surveillance radar with personal computer and satellite navigational system, with display of ship's position, her coordinates, heading and speed at superposition of present radar image whose center is tied-in to geographic coordinates determined by satellite navigational system, registration of image with navigational electronic chart on geospatial information carrier where visualization of change of actual depth in fixed point of water basin in time is carried out, isolines of maximum tide fluctuations and surface of tide fluctuations, height of tide are plotted. Some areas of water basin where actual depth is lesser than permissible magnitude (draft plus safe depth) are determined. Structure of storage of geospatial information includes conversion of flat scanning of Earth to multilevel embedded squares each of which is indexed by code which is just longer Guilbert's curve for this square. Index thus found is used for finding objects having index with prefix equal to index of preset area.
 Method of plotting sea bottom navigation chart / 2248007
Proposed method includes running around preset area and radiation of acoustic pulse signal towards sea bottom for each point of navigation chart, forming directional pattern of receiving antenna, reception and conversion of acoustic pulse signals reflected from interface into electrical signals which are amplified and separation of the envelope of these signals; the envelope of electric pulse signals from output of receiving channel is transmitted to analog-to-digital converter which takes accesses of the envelope at digitization frequency equal to double bandwidth of receiving channel from moment of radiation of acoustic pulse signal to moment equal to time required for its passage through preset depth and vice versa; accesses taken in this interval are divided into maximum magnitude of access in this interval; magnitudes are placed according to geographic coordinated and are stored in digital form as digital navigation chart of sea bottom.
 The method of adaptive digital filtering of signals and device for its implementation / 2237965
The invention relates to electrical engineering and can be used as a device adaptive filtering in medical imaging
 Systems and methods to detect liquids / 2415055
Group of inventions relates to systems and methods to detect availability of liquid. System comprises package, which includes surface to create reservoir containing salt solution, ultrasound sensor arranged with the possibility to direct acoustic energy to surface and to receive return echo of acoustic energy. Ultrasound sensor is installed on board supported by a support structure and is attached to according base. Support structure comprises upper bracket fixed to plate and lower bracket installed on base and joined to upper bracket with the possibility to adjust distance between ultrasound sensor and package.
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FIELD: measurement equipment. SUBSTANCE: wave recorder includes a piezoceramic emitter of sendings of carrier frequency, which are shaped by a heavy-pulse generator built on the basis of two SMD switches of complementary conductivity type and series resonance circuit. Acoustic sendings reflected from surface are received by reversible piezoceramic emitter, converted to digital form and processed by a microprocessor analyser provided with a correlation processing unit. EFFECT: reduction of power consumption and weight and dimensional parameters of the instrument. 2 cl, 1 dwg
The sea state is measured by the deviation of the instantaneous values of the water level from mean sea level at the observation point. Instruments for measuring sea level in many cases is also suitable for measuring wave parameters, if they have a high rate measurements. The composition of the measured wave parameters usually include height, period and wavelength, and for special tasks - spectra of the height and direction of waves. A known design of resonant acoustic sensor [1], which, in principle, can be used to measure anxiety. The transmitter includes measuring and compensating pipe, which is equipped with two electro-acoustic transducer. The converters are connected to the generator of the noise signal, which excites in the inner cavity of the pipe resonant acoustic oscillations. These fluctuations are received by two microphones, amplified by pre-amplifiers and fed to an analog-to-digital Converter. Digitized oscillations are received in the processing unit that includes the first and second Fourier converters and block taking the logarithm of the signal, which method Castelnovo analysis allocate frequency harmonic components of the spectrum. The resonance frequencies of the acoustic waves from ericales pipe is calculated liquid level. Harmonic frequencies in the compensation pipe are used to introduce amendments. Positive qualities of this transmitter is a high accuracy level measurement, performance, and robustness to noise environment. The disadvantages of the transmitter in relation to the task of measuring the wave is the need to use measurement and compensation of pipes of large size, which may not be installed in the open sea. In addition, the electric circuit device has high power consumption, because the composition of blocks and the measurement mode is designed for electric power, thus preventing its use in stand-alone devices are battery powered. Also known multibeam acoustic Doppler velocimeter current spectrum and excitement in the open sea (ADCP) [2]. These instruments are made in the form of a sealed cylindrical housing, the top cover which has four orthocarolina highly directional antenna radiating acoustic parcels in the upward direction at an angle of 30° relative to the vertical. Inside the housing the electronic components of receiver-emitter amplifiers reflected signals, microprocessor, flash memory and the battery pack. Instruments ADCP mounted on the bottom of the sea with depths from 5 to 80 m on the rigid platform, excluding the possibility of movement under the influence of excitement. The principle of the Doppler measure of the excitement is to measure the orbital velocity of the wave motion of the deep eddies of water on the magnitude of the Doppler shift frequency of the reflected signals. Measurements are made with four narrow acoustic beams. Along each beam emit up to 25 conventional cells, a length of approximately 3 m and within each virtual cell to measure the speed of orbital movement of the water. The probe pulses are emitted with a frequency of 2 measurements per second, which gives the total number of sources of information on the four rays of about 200 that provides the necessary statistical redundancy and the possibility of calculating the spectrum of the direction of movement of the individual spectral components of excitement. Range of directional waves is calculated using a specially developed algorithm Maximum Liklihood Method (MLM) (maximum likelihood method). Range of wave heights, which is the main objective of the measurements, calculate the indirect method of successive approximations for several iterations, using theoretical ratio of hydrodynamics between the orbital velocities of the deep eddies and wave heights on the surface of the sea. These estimates have a relatively low accuracy, which is what I depends on the depth of the sea, the bottom topography, proximity to the coastline. The low accuracy of the measurement of wave height and associated uncertainty of measurement are the main disadvantages of Doppler meters excitement. Closest to the claimed invention by the combination of features and principle of operation is the device Upward looking instrument - Wave Profiler canadian firm ASL Environmental Sciences [3] (Upward looking sonar - meter excitement). This device comprises a sealed cylindrical housing and mounted on the lid of the piezoelectric acoustic emitter packages. The emitter has a sharp directivity, which gives a small spot diameter of the exposure on the sea surface and thus provides a high spatial resolution. Inside the body is placed electronic components, including the generator short pulse parcels, the receiver is reflected from the surface of the water signals, analog-to-digital Converter, a processor, a memory unit and the battery pack. The device is installed as part of pritoplennye mooring stations on the host buoy, recessed from the surface of the water to 225 m water Depth at the point of production may be significantly larger. In this device, the wave height is measured by the direct method with a time delay of the reflected pulse signal from the surface of the water, which is sufficiently high the th accuracy and reliability of measurements. The period of a wave is measured by processing a number of observations, obtained by probing with a periodicity of at least two measurements per second. For measurements of the spectrum of the orientation of the excitement you want to simultaneously use three synchronized appliance, posted on the bottom on some database and installed at the vertices of the triangle. The disadvantage of the prototype, which reduces its feasibility and performance characteristics, is relatively large weight and dimensions, as well as a large power capacity of the battery. Power consumption limits the battery life of the device up to 3 months at the frequency of the emitted parcels 4 Hz carrier frequency 420 kHz. The present invention is to improve technical and economic performance of the prototype in the direction of reducing energy consumption, reducing weight and size, extend autonomy to 1 year. This task is solved in that in hydroacoustic pornographe, containing a sealed cylindrical housing and mounted on the lid piezoceramic beam receiver emitter placed inside the generator short acoustic parcels receiver reflected from the surface of the signals, a microprocessor-based analyzer with built-in analog-to-digital Converter, a memory unit is a battery power source, the acoustic generator packages built from two SMD - keys of the complementary conduction type connected with receiver emitter through the inductance forming capacity receiver-emitter resonant circuit, in the circuit of the resonant circuit is enabled to a low-resistance resistor, which is got positive feedback on the inputs SMD - keys via the amplifier, made of two cascaded logic inverters, and the output of the receiver emitter connected to microprocessor-based analyzer, the first output of which is connected to a computer to read data from the memory block, the second output submitted to the control input of a logical inverter. Sonar Volgograd also differs in the fact that microprocessor-based analyzer supplemented by the correlation processing unit, which calculates the cross-correlation function of the emitted and reflected signals. Because of those distinctive characteristics Volgograd acquires new positive qualities. A repeated increase of efficiency of power consumption is achieved by the proposed scheme generator acoustic parcels, which has a higher efficiency due to the resonance tuning of piezoelectric emitter and mode of operation pulsed excitation, in which there is no need for pre-generate the re external excitation. When the duty cycle of the emitted pulses of the order of 1000 no additional continuously running generator external excitation provides great savings of energy consumption. The second positive effect in the proposed device is achieved through the block correlation signal processing. Compared with the traditional treatment option signal amplitude detector, requiring the ratio of the signal level to the noise level not less than 5, the correlation unit can reliably receive signals when the signal-to-interference level 1. This allows you to reduce 5 times the power output of pulses and thereby to achieve additional savings of energy consumption. In addition, correlation processing of the signal compared to the amplitude detection allows to increase the resolution of the echolocation range up to approximately half period of the carrier frequency. This, in turn, makes it possible to reduce the carrier frequency sensing with 420 kHz to 200 kHz at a given resolution range 5 see due to the much lower attenuation frequency 200 kHz increases in proportion to the maximum depth setting device from 225 m to 350 m Functional block diagram of the device shown in figure 1. The circuit composition comprises a piezoceramic receiver-emitter 1, the memory card is received by the output of the two SMD key complementary conduction type 2 through inductance 3 forming capacity emitter serial resonant circuit. In the circuit of the resonant circuit is enabled to a low-resistance resistor 4, which is got positive feedback on the inputs SMD-keys via the amplifier, constructed from two logic inverters 5. The output of the receiver-emitter 1 is connected to the input of the receiver of the reflected signals 6, the output of which is connected to the input of a microprocessor-based analyzer 7, incorporating analog-to-digital Converter, the correlation processing unit and a memory block. The first output of the microprocessor analyzer connects to the computer to read data from the memory block and the second output submitted to the control input of a logical inverter 5. The power to each power device is powered by a battery source 8. Pornografa occurs in the following sequence. After power-on command, the microprocessor analyzer 7 with his second inputs receive the synchronization signals on the logic input of the inverter 5 with a clock frequency of 4 Hz with a duration of 0.1 MS. Under the action of each pulse inverters 5 go to an active mode of operation and generating a powerful impulse to the ceramic receiver emitter 1 by rotating the switch SMD - 2 keys and the reason is snogo amplification circuit, formed by the inductance 3 and the capacity of the receiver-emitter 1. In the circuit occurs the resonance currents, which form low-resistance resistor 4, the voltage drop that support self-oscillations in a chain of positive feedback. Pulse burst from the receiver-emitter radiates into the water and at the same time, passing through the receiver 6 can be written in the block correlation processing microprocessor analyzer 7 for subsequent comparison with reflected from the surface of the pulse. Acoustic parcel is reflected from the surface of the water, taken transceiver transmitter 1 and the receiver 6 and enters the microprocessor-based analyzer 7. In the analyzer the parcel is converted to digital form and processed in the correlation processing unit, which calculates the cross-correlation function of the emitted and received signals. On the signal delay time measured by the unit of the correction processing, microprocessor-based analyzer calculates the distance sensing and instantaneous value of the wave height. Instant timing wave height with an interval of 0.25 s give continuous wave profile, which is stored in the memory block. One sensing session lasts for 10 minutes and includes 2400 times the wave height. Selected discrete samples allows you to record a spectrum of waves with minimal period is filling up 1 C. The sessions of the measurements are repeated with a frequency of 1 hour. The measurement results are read from the memory unit in the computer after hoisting to the surface. Literature 1. EN (11) 2249186 (13) C1 (51) IPC7G01F 23/28, G01F 23/296. Resonant acoustic sensor. 2. ADCP Multi-Directional Wave Gange", www.rdintstuments.com. 3. Wave Profiler, www.aslenv.com. (prototype). 1. Hydroacoustic offline Volgograd measuring sea agitated by the method of echolocation in the direction from the bottom to the surface, containing a sealed cylindrical housing is installed on the lid and beam piezoelectric premoistened and located inside the housing of the pulse generator acoustic parcels receiver reflected from the surface of the water signal, a microprocessor-based analyzer with built-in analog-to-digital Converter and a memory unit, a battery power source, characterized in that: 2. Sonar Volgograd according to claim 1, characterized in that the microprocessor-based analyzer supplemented by the correlation processing unit, which calculates the cross-correlation function of the emitted and reflected signals.
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