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79 results about "Gravity wave" patented technology

In fluid dynamics, gravity waves are waves generated in a fluid medium or at the interface between two media when the force of gravity or buoyancy tries to restore equilibrium. An example of such an interface is that between the atmosphere and the ocean, which gives rise to wind waves.

Gravity wave power generation apparatus

InactiveUS7759813B2Increase buoyancyAvoid shockFluid couplingsConversion without intermediate conversion to dcEngineeringStreaming current
A power generation apparatus that will not exhaust carbon dioxide is provided where a strong rotating motion is created by the combination of solar heat energy, gravitational energy, and ocean current or tidal current energy. In the sea area having stream current such as ocean current and tidal current, the power generation apparatus is constructed by a weight mass provided with a rotation axis (shaft) on the top part thereof, a floating body provided with a bearing for fitting in the rotation axis where it moves up and down according to the swell on the ocean surface, a normal rotation conversion generator for converting the reverse motion produced on the rotation axis to a normal rotating motion by using a one-way clutch or a ratchet mechanism, and a mooring member for fastening the wire rope between the anchor and the connecting point of the floating body and weight mass.
Owner:FUJISATO TETABUHIKO +1

Method and signal generator for simulation of sea clutter

ActiveUS20170139038A1Not fitSlowly variedWave based measurement systemsRadar systemsGravity wave
The invention is related to a method and a signal generator for generating a sea clutter simulation signal used as an input signal for a radar system. The method comprises the steps of: modeling of gravity waves using a physical simulation of a sea surface; modeling of capillary waves using stochastic processes; and adding the modeled capillary waves to the modeled gravity waves.
Owner:ROHDE & SCHWARZ GMBH & CO KG

Gravity wave power generation apparatus

InactiveUS20090051168A1Increase buoyancyAvoid shockFluid couplingsMachines/enginesThermal energyEngineering
A power generation apparatus that will not exhaust carbon dioxide is provided where a strong rotating motion is created by the combination of solar heat energy, gravitational energy, and ocean current or tidal current energy. In the sea area having stream current such as ocean current and tidal current, the power generation apparatus is constructed by a weight mass provided with a rotation axis (shaft) on the top part thereof, a floating body provided with a bearing for fitting in the rotation axis where it moves up and down according to the swell on the ocean surface, a normal rotation conversion generator for converting the reverse motion produced on the rotation axis to a normal rotating motion by using a one-way clutch or a ratchet mechanism, and a mooring member for fastening the wire rope between the anchor and the connecting point of the floating body and weight mass.
Owner:FUJISATO TETABUHIKO +1

Method and apparatus for the production of energy

A proton held aligned in a sufficiently strong magnetic field maintaining the low energy state for the body can be decayed with cyclic 2 Hz radio waves to provide one of three types of energy: fusion, gravity waves and anti-gravity, and particle-antiparticle annihilation. New elements may also be formed as a result of the ability to rapidly decay protons at room temperature.
Owner:TAHAN A CHRISTIAN

X-waveband wave observation radar ocean current inversion preprocessing method

InactiveCN103105603AHigh precisionTake up less resourcesWave based measurement systemsSurface oceanPretreatment method
The invention provides an X-waveband wave observation radar ocean current inversion preprocessing method based on the ocean gravity wave dispersion relation. Firstly, a relation expression formula which can meet angular frequency and spatial wave number of the dispersion relation is determined through the ocean gravity wave dispersion relation and a corresponding geometrical relation. Secondly, a series of curved line clusters which can meet the relation formula is determined through the determined angular frequency and the spatial wave number for each direction. The determined curved line clusters are judged to find out curved lines which can meet the dispersion relation. Finally, the determined dispersion relation curved lines are used for carrying out ocean inversion to get accurate ocean current information. The X-waveband wave observation radar ocean current inversion preprocessing method based on the ocean gravity wave dispersion relation is simple in algorithm and high-efficiency and provides the preprocessing method for ocean dynamics parameter inversion of a shore-based X-waveband wave observation radar and a boat-mounted X-waveband wave observation radar and improves accuracy of parameter inversion of ocean currents and ocean waves.
Owner:WUHAN UNIV

Interference measuring instrument based on multimode waveguide light field transverse mode

The invention discloses a transverse made interferometer based on the optical field in the multimode waveguide. It includes connected light source element, mode exchanging element, sensing element and interrelated detection element. The mode exchanging element has many multimode waveguide direction couplers, the sensing element has many multimode waveguide phase modulators, and the interrelated detection element has many connected Y type banqiqi, photo detectors and differentials, the differentials connected to correlators. The invention uses classic field to realize the classic imitation way of many particle quantum entangled state, this kind of classic imitation produces similar quantum entangled non-locality, the invention can reach to phase position detection accuracy in direct proportion to N-1, and reach to the detection accuracy's Heisenberg limitation as the quantum entangled plan. What's more important is the proposal disclosed by the invention has important potential application in the art of gravity wave detection, micronano displacement test, and optical top and optical sonar detection.
Owner:ZHEJIANG UNIV

Self-buried submarine seismograph

The invention relates to the field of marine seismic observation equipment, and discloses a self-buried submarine seismograph. The self-buried submarine seismograph comprises a seismometer module. Theseismometer module comprises a drill and a driving component for driving the drill to rotate. The drill is internally provided with a cavity which is internally provided with the seismometer. According to the self-buried submarine seismograph, the seismometer is installed in the drill and the drill rotates into the submarine sedimentary strata under driving of the driving component so that the influence of the submarine flow on the seismometer can be effectively reduced, the influence of the low frequency noise caused by periodic compression of the long gravity waves in the ocean on the seismometer can also be reduced, and the data acquisition quality, especially the quality of the horizontal component data, of the seismometer can be enhanced.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Parallel computing method for time-varying multi-scale electrically-large-area sea-surface electromagnetic scattering vector field

The invention discloses a parallel computing method for a time-varying multi-scale electrically-large-area sea-surface electromagnetic scattering vector field. The method comprises the following steps: building a gravity wave sea-surface model; determining a cutoff frequency k<c> of gravity waves and tension waves, solving coherent scattering under the gravity waves through Kirchhoff, and approximately solving Bragg scattering of the tension waves through small disturbance; modulating a tension wave spectrum through the gravity waves to obtain a vector filed of the tension waves under surface elements; making a surface element shielding judgment through a Z-BUFFER method; and determining an amplitude and a phase of the vector field under the surface elements according to a vector overlapping principle of the field. According to the method, the tension waves are modulated through the gravity waves on the basis of the characteristics that the tension wave spectrum is modulated through the gravity waves and an electrically-large-area rough sea surface has a time-varying multi-scale echo characteristic, and a scattering field and a Doppler spectrum of the large-area rough sea surface are computed in parallel through the Kirchhoff and a small disturbance approximation method in conjunction with CUDA (Compute Unified Device Architecture), so that radar echo characteristic analysis of the time-varying multi-scale electrically-large-area rough sea surface is realized.
Owner:XIDIAN UNIV

Terrain gravity wave drag parameterization method considering horizontal transmission factor

ActiveCN106874690AMomentum flux reductionSurface momentum flux correctionInformaticsSpecial data processing applicationsHorizontal transmissionTerrain
The invention discloses a terrain gravity wave drag parameterization method considering a horizontal transmission factor. The method comprises the steps of calculating a block altitude when airflow passes a terrain; obtaining spectral distribution of the terrain, starting from the first model layer located above the block altitude, and conducting the following processing steps to calculate the amplitude of a terrain gravity wave; calculating a fluctuation Richardson number; calculating a saturation amplitude of the terrain gravity wave and a vertical flux of a horizontal momentum of the terrain gravity wave if the fluctuation Richardson number is smaller than a critical value; calculating a momentum flux absorbed by mean flow of the gravity wave; continuing to perform vertical transmission till a mode top is reached if the fluctuation Richardson number is larger than the critical value Rie. By means of the terrain gravity wave drag parameterization method considering the horizontal transmission factor, the horizontal transmission of the gravity wave is processed, the influence of the terrain gravity wave on atmospheric circulation can be better represented, and the simulating capability of a numerical mode is improved.
Owner:NANJING UNIV

Visibility of Targets on and below the Ocean Surface

A pair of images is obtained having pixel intensities substantially proportional to wave height for a majority of pixels. The images are aligned, orthorectified, and adjusted for relative reflectance in their respective spectral bands. The images are Fourier transformed, and then one image is propagated to the time of the other image. A deglinted image is calculated by taking the difference in wavenumber space, then inverse Fourier transforming. Alternatively, an equivalent formula can be obtained using convolutions. The propagation uses a gravity wave propagation function, which, in general, can be a function of depth, surface current, and wave direction which can be obtained from external data, assumed constant, or calculated from wave images depending on the particular circumstances.
Owner:ABILEAH RON

Terrain gravity wave lift force parameterization method

The present invention discloses a terrain gravity wave lift force parameterization method. The method comprises the following steps: calculating a blocking height of the pattern airflow passing the terrain; calculating spectral distribution of the terrain above the blocking height; calculating a perturbation speed corresponding to each component of the terrain gravity wave; and beginning with thefirst pattern layer above the blocking height, carrying out the following steps: calculating the changes in the horizontal wind direction of the pattern, calculating the momentum flux of the fluctuating component perpendicular to the horizontal wind field, and calculating the terrain gravity wave lift force. According to the method disclosed by the present invention, the directional vertical shearof the environmental wind field is processed, the influence of the terrain gravity wave transmission on the atmospheric circulation can better characterized, and the simulation ability and the prediction level of the pattern can be improved.
Owner:NANJING UNIV

Gravity wave parameter calculation method and device and terminal

The invention provides a gravity wave parameter calculation method and device and a terminal, and relates to the technical field of gravity wave. The method comprises the following steps of: obtainingan original temperature profile on the basis of detection data obtained by detecting atmospheric temperature by a sounding rocket; fitting the detection data by adoption of a preset processing methodso as to obtain a background temperature profile, wherein the preset processing method comprises a moving average polynomial fitting method with a filter coefficient or a Kalman filter algorithm; solving a difference value between the original temperature profile and the background temperature profile so as to obtain a temperature disturbance profile; and calculating a gravity wave parameter on the basis of the temperature disturbance profile, wherein the gravity wave parameter comprises gravity wave spectrum power density. According to the method, the correctness of the gravity wave parameter can be effectively improved.
Owner:陈书驰 +2

Reservoir landslide array type underwater deformation monitoring device and monitoring method

The invention provides a reservoir landslide array type underwater deformation monitoring device and monitoring method. An anchorage is buried in an underwater monitoring point of a slide body, and a floating shell is used for floating on the water surface; a GPS sensor is used for receiving and transmitting GPS signals to obtain the real-time position of the floating shell, a water temperature sensor is used for obtaining a water temperature time sequence, and a gravity wave meter is used for obtaining a water surface wave height time sequence; and the upper end of a pull rope is fixedly connected with the floating shell through a displacement compensation mechanism, the lower end of the pull rope is fixedly connected with the anchorage, the displacement compensation mechanism is used for carrying out displacement compensation after the floating shell floats along with waves, and an encoding type displacement meter is used for measuring the real-time distance between the encoding type displacement meter and the anchorage. The technical scheme provided by the invention has the beneficial effects that the real-time three-dimensional coordinates of the underwater monitoring point are monitored through a float type monitor, and the underwater three-dimensional space coordinate change of the landslide mass can be accurately positioned. Related environmental factors are recorded in real time, and functions of real-time information acquisition, storage, processing analysis, transmission and the like are integrated.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Sea surface wave model construction method and system based on spectral analysis

The invention discloses a spectral analysis-based sea surface wave model construction method and system, and the method comprises the steps: carrying out the grid division of a sea surface, calculating parameters for each grid of the sea surface, and building a gravity wave model, a surge model and a shockwave model for the whole sea surface; obtaining a gravity waveform height amplitude according to the gravity wave model, obtaining a surge waveform height amplitude according to the surge model, and obtaining a shock wave height amplitude according to the established shock wave model; superposing the gravity waveform height amplitude, the surge waveform height amplitude and the shockwave height amplitude, and carrying out inverse fast Fourier transform on the superposed amplitudes to calculate a sea surface waveform height spectrum which changes along with time in an airspace within a certain range; and constructing a sea surface wave geometric model in an STL format according to the sea surface waveform height spectrum changing along with time in the airspace in a certain range. According to the invention, the authenticity and accuracy of simulation are improved.
Owner:BEIJING STEALTH TECH CO LTD

Multi-scale sea surface electromagnetic scattering calculation method and device based on marine environment elements

The invention discloses a multi-scale sea surface electromagnetic scattering calculation method and device based on marine environment elements and a storage medium, and belongs to the technical field of marine detection and physical remote sensing. The method comprises the following steps: calculating a tension wave sea spectrum according to an Elfouhail sea spectrum in combination with a Longuet-Higgins directional spectrum; a JONSWAP sea spectrum is combined with a Longuet-Higgins directional spectrum to calculate a gravity wave sea spectrum; superposing the tension wave on the gravity wave according to the slope by using a linear superposition method, and calculating a self-adaptive cut-off wave number; the contribution of small-scale waves to scattering is calculated by adopting an integral equation method, mirror scattering of large-scale waves is counted by adopting a Kirchhoff approximation method, and statistics and fusion are carried out on each scale wave according to the self-adaptive cut-off wave number, so that an electromagnetic scattering value is obtained. According to the method, a sea surface geometric calculation method based on real marine environment element driving is adopted, and accurate calculation is performed aiming at sea surface scattering characteristics under different sea conditions in combination with an integral equation method-Kirchhoff approximation electromagnetic scattering calculation model of an adaptive cut-off wave number, so that the calculation precision of scattering intensity is improved.
Owner:HARBIN ENG UNIV

Elastic stick

PendingCN106390410AImprove exercise effectExercise balanceSport apparatusGravity centerEngineering
The invention provides an elastic stick with a novel structure. A center-of-gravity displacement device is arranged on a stick body; the center-of-gravity displacement device is used for adjusting the center of gravity of a long stick when the stick body is inclined; the middle part of the stick body is of a hollow structure; and the center-of-gravity displacement device is arranged in the hollow structure in the stick body. The elastic stick designed by the invention can be used as an extremely good exercise tool and can be used for effectively training a comprehensive balancing ability of people; the elastic stick can have a design of waving the long stick by two hands and can also have a design of operating a short stick by one hand; and when people wave the elastic stick, an inner gravity waving part is supported and waves under the action of an elastic connecting part, and requirements on operators are relatively high, so that the exercising effect of the operators is relatively good and is better than that of a traditional stick.
Owner:济源市晨氧运动用品有限公司

Airglow layer gravity wave spectrum temperature imaging system and two-dimensional temperature field point-surface fusion inversion method

The invention relates to an airglow layer gravity wave spectrum temperature imaging system and a two-dimensional temperature field point-surface fusion inversion method. The airglow layer gravity wave spectrum temperature imaging system comprises a fine spectrum detection subsystem, a rotation temperature spectrum measurement subsystem and a large-view-field gravity wave imaging subsystem. The three subsystems are respectively provided with three progressively-increased field angles and carry out synchronous detection, a detection area and a detection target are organically cooperated, image and data processing is carried out in the later period, and the fine spectrum detection subsystem and the rotating temperature spectrum measurement subsystem carry out cooperative calibration, so that high-precision inversion of the atmospheric temperature can be realized. And the linear relation between the airglow radiation intensity and the atmospheric temperature is obtained. A small, medium and large field-of-view collaborative observation mode is adopted, and through a point-surface fusion detection method and a data inversion algorithm, a linear relationship between high-accuracy airglow radiation intensity constructed by single-point detection and atmospheric temperature is expanded and fused to an airglow radiation field with a horizontal two-dimensional resolution capability; therefore, the temperature field with the same detection precision and the horizontal two-dimensional resolution capability is obtained.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Method for predicting typhoon wind speed by using stratospheric gravitational waves

The invention discloses a method for predicting the typhoon wind speed by using stratosphere gravity waves. The method comprises the following steps: S100, collecting data and processing the data; S200, with a Rayleigh laser radar, detecting an area to be predicted, and acquiring Rayleigh laser radar echoes; S300, drawing a stratospheric atmospheric density vertical profile, a temperature verticalprofile, a stratospheric latitudinal wind vertical profile and a stratospheric longitudinal wind vertical profile; S400, acquiring a disturbance profile of the area to be predicted; S500, respectively calculating the horizontal wavelength, frequency, effective kinetic energy and effective potential energy of the gravity wave of the area to be predicted; and S600, predicting the typhoon wind speedof the area to be predicted. According to the method for predicting the typhoon wind speed by using the stratospheric gravitational wave, the frequency, the horizontal wavelength, the effective kinetic energy and the effective potential energy of the stratospheric gravitational wave are creatively proposed as main factors influencing the typhoon wind speed by collecting and analyzing the global over-the-year typhoon data.
Owner:NAT UNIV OF DEFENSE TECH

Airglow gravity wave multi-parameter detector

ActiveCN111238577ARealize multi-parameter observationReduce volumeMeasurement devicesLight filterMechanical engineering
The invention relates to an airglow gravity wave multi-parameter detector. The airglow gravity wave multi-parameter detector comprises a shell, and a spectral temperature detection module and a large-view-field gravity wave imaging module which are arranged on the shell. The spectral temperature detection module comprises an optical window, a field diaphragm, an achromatic doublet lens, a first narrow-band interference filter, a lens, a first refrigeration CCD sensor and a first metal support from top to bottom. The large-view-field gravity wave imaging module comprises a hemispherical opticalwindow, a wide-angle lens, a first optical fiber light cone, a second narrow-band interference filter, a second optical fiber light cone, a second refrigeration CCD sensor and a second metal supportfrom top to bottom. The airglow gravity wave multi-parameter detector provided by the invention can detect the atmospheric temperature and the airglow radiation intensity at the same time, and multi-parameter observation is realized.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Composite wave-resisting seepage-proof wall for coast flexible direct-current convertor station and transformer substation and construction method

The invention discloses a composite wave-resisting seepage-proof wall for a coast flexible direct-current convertor station and a transformer substation and a construction method. According to the composite wave-resisting seepage-proof wall, a wave wall body and a bounding wall body are constructed in a combined mode to form a gravity type wave wall doubled as a bounding wall, and a composite seepage-proof body from the natural ground to bed rock is arranged at the bottom or on the outer side of the gravity wave wall and is composed of a completely-sealed scour-protection seepage-proof underground continuous wall with the width about 3 m. The construction method of the composite seepage-proof body comprises the steps that (1) dynamic compaction or dynamic compaction replacement compact processing is carried out on easily-scoured backfill and sludge; (2), on the basis of dynamic compaction, scour-protection seepage-proof continuous blowdown filling piles are sealed; (3) additional water stop measures of pre-filling of dense slurry and high-pressure grouting are adopted in the inner side of the convertor station or the inner side of the transformer substation. The composite wave-resisting seepage-proof wall has the advantages of being simple in structure, convenient and reliable in construction, firm, good in safety, relatively economical, small in occupied area and the like.
Owner:ZHEJIANG ELECTRIC POWER DESIGN INST +1

Foundation airglow gravity wave image quick judgment method and system

The invention relates to a method and a system for quickly judging a foundation airglow gravity wave image. The method comprises the following steps: acquiring a real-time foundation airglow image; preprocessing the real-time foundation airglow image, inputting the preprocessed real-time foundation airglow image into a hierarchical transfer learning model, outputting a gravity wave existence probability, and storing a wave-containing image, the hierarchical transfer learning model being obtained by performing segmented training on a foundation airglow image data set; the hierarchical transfer learning model comprises a pre-trained OfficientNetB3 model, a deformable convolutional layer and a classification head. According to the method, the problem that the gravity wave of the foundation airglow imager is difficult to automatically discriminate in real time in short-term and temporary deployment is solved, the discrimination workload of an artificial expert is reduced, and meanwhile, the problem that a traditional machine learning method is low in over-fitting accuracy in short-time and small-amount data training is avoided. And the purposes of rapid deployment and efficient identification are achieved.
Owner:NAT SPACE SCI CENT CAS

Method for analyzing response of UTLS ozone in Qinghai-Tibet Plateau to gravity waves

The invention discloses a method for analyzing response of UTLS ozone to gravity waves in the Qinghai-Tibet Plateau. The method comprises the following steps: gravity wave selection, numerical simulation scheme, gravity wave feature analysis, response of UTLS ozone to gravity waves and WRF mode simulation result analysis. According to the method, terrain gravity wave events occurring above the Qinghai-Tibet Plateau area are subjected to comparison and simulation analysis through European center reanalysis data ERA5 and a mesoscale mode WRF; more information is provided for acquisition of gravity wave information through a Suomi satellite view angle from top to bottom; the response of the UTLS ozone in the Qinghai-Tibet Plateau to the gravity wave is explored from the dynamic process of thegravity wave, and a certain scientific basis is provided for further research in the future, so the guarantee is provided for human survival, and a basis is provided for the change of weather and climate.
Owner:GUANGDONG OCEAN UNIVERSITY

Gravity wave spectral image inversion temperature prediction method based on large language model fine tuning

The invention particularly relates to a gravity wave spectral image inversion temperature prediction method based on large language model fine tuning. The method comprises the following steps: collecting gravity wave spectral image data; preprocessing the collected gravity wave spectral image; dimension compression is carried out on the preprocessed gravity wave spectral image; constructing a gravity wave spectral image inversion temperature detection model based on an LLaMA model; inputting the gravity wave spectral image after dimension compression and meteorological environment text data into a gravity wave spectral image inversion temperature detection model based on an LLaMA model for training; and inputting test data into the trained gravity wave spectral image inversion temperature detection model based on the LLaMA model to generate gravity wave spectral image inversion temperature. According to the method, the problems of unconspicuousness of image features and severity of noise interference are solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method and signal generator for simulation of sea clutter

The invention is related to a method and a signal generator for generating a sea clutter simulation signal used as an input signal for a radar system. The method comprises the steps of: modeling of gravity waves using a physical simulation of a sea surface; modeling of capillary waves using stochastic processes; and adding the modeled capillary waves to the modeled gravity waves.
Owner:ROHDE & SCHWARZ GMBH & CO KG

A self-priming gravity wave pump

The invention discloses a self-priming gravity wave pump. The pump body adopted is a sealed cylinder, and two water holes symmetrical along the central axis are respectively opened at the upper and lower ends of the pump body. The upper and lower two holes on the same side of the pump body The two water holes are connected by pipelines as the water inlet pipeline and the water outlet pipeline respectively. The two water holes at the lower end are connected with the outside, and a check valve is set in the pipeline at the water hole; the floating body on the water surface is rigidly connected to the counterweight. ;The upper end of the piston rod is fixedly connected with the counterweight, and the lower end is fixedly connected with the piston; the piston rod extends into the pump body through the upper end surface of the pump body, and the piston rod is in sealing contact with the upper end surface of the pump body; the bottom of the pump body is fixedly connected with the support buoy , the supporting buoy is filled with air; the underwater floating body is fixedly sleeved on the upper end of the supporting buoy; the lower end of the supporting buoy is connected to the anchor through a anchor chain. The wave pump uses wave buoyancy and its own gravity to push the piston to move up and down.
Owner:710TH RES INST OF CHINA SHIPBUILDING IND CORP

Wave energy converting device

The invention relates to an energy converting device and discloses a wave energy converting device, which comprises a suspension frame suspending on the water or in the water, a wave vibration coupling mechanism which is connected to the suspension frame and can couple the undulatory motion of the wave on the water into the movement of the wave vibration coupling mechanism, and an energy converting mechanism, wherein a hydraulic cylinder is arranged inside the wave vibration coupling mechanism, a piston rod which can move up and down along with the undulatory motion of the wave is arranged inside the hydraulic cylinder, and the energy converting mechanism is communicated with the hydraulic rod through a pipeline. The wave energy converting device suspends on the sea and cannot be destroyed by the impact of the wave. The construction cost is low, the reliability is high, and the energy output is stable and not affected by the sea level in the process of converting the wave energy. The energy converting device is used for catching gravity wave, and the capture efficiency is high.
Owner:谭军

A vibration wave making oxygen increasing device

The invention discloses a vibrating wave-making oxygen increasing device, comprising a frame, the frame is supported near the water surface by a floating body, a vibrating body capable of reciprocating up and down is arranged in the frame, and the vibrating body is connected with a crankshaft through a connecting rod , the end of the crankshaft is connected with a motor. The invention reciprocates up and down in the frame through the vibrating body, repeatedly lifts and presses water in the water, and forms waves that spread around through the tension of the surface layer of the water body and its own gravity, so as to promote the flow of the water body and achieve good oxygenation; and the wave-making At the same time, it will arouse water splashes, further expand the full contact between water and air, and achieve the best oxygenation effect.
Owner:梁桥锋 +1

A parameterization method for wet atmospheric topography gravity waves

The present invention discloses a method for parameterizing wet atmospheric terrain gravity waves, comprising the following steps: calculating the dry adiabatic buoyancy frequency and total density in unsaturated wet air, taking into account the effects of water vapor, liquid water, and solid water; calculating the surface stress of wet atmospheric terrain gravity waves; calculating the wet atmospheric buoyancy frequency parameters during the vertical propagation of terrain gravity waves, taking into account both dry and wet adiabatic processes; calculating the wet atmospheric buoyancy frequency parameters, gravity wave amplitude, and local Richardson number layer by layer during the upward propagation of terrain gravity wave stress; determining whether the terrain gravity wave layer has reached saturation; and numerically simulating heavy rainfall events to analyze the impact of water vapor on rainfall. The present invention addresses the dry air assumption in the numerical model for terrain gravity wave parameterization, better characterizing the gravity wave surface stress and the vertical propagation process of the stress, and improving the performance of the numerical model.
Owner:NAT UNIV OF DEFENSE TECH

An airglow layer gravity wave spectrum temperature imaging system and a two-dimensional temperature field point-surface fusion inversion method

The present invention relates to an airglow layer gravity wave spectral temperature imaging system and a two-dimensional temperature field point-surface fusion inversion method, comprising a fine spectrum detection subsystem, a rotational temperature spectrum measurement subsystem, and a large-field-of-view gravity wave imaging subsystem. The three subsystems are each provided with three increasing field-of-view angles and perform synchronous detection. The detection area and the detection target are organically coordinated. Later, through image and data processing, the fine spectrum detection subsystem and the rotational temperature spectrum measurement subsystem are collaboratively calibrated to achieve high-precision inversion of atmospheric temperature and obtain a linear relationship between airglow radiation intensity and atmospheric temperature. Using small, medium, and large field-of-view collaborative observation modes, and through a point-surface fusion detection method and a data inversion algorithm, the highly accurate linear relationship between airglow radiation intensity and atmospheric temperature constructed by single-point detection is expanded and fused to an airglow radiation field with horizontal two-dimensional resolution, thereby obtaining a temperature field with the same horizontal two-dimensional resolution of detection accuracy.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Interference measuring instrument based on multimode waveguide light field transverse mode

The invention discloses a transverse made interferometer based on the optical field in the multimode waveguide. It includes connected light source element, mode exchanging element, sensing element andinterrelated detection element. The mode exchanging element has many multimode waveguide direction couplers, the sensing element has many multimode waveguide phase modulators, and the interrelated detection element has many connected Y type banqiqi, photo detectors and differentials, the differentials connected to correlators. The invention uses classic field to realize the classic imitation wayof many particle quantum entangled state, this kind of classic imitation produces similar quantum entangled non-locality, the invention can reach to phase position detection accuracy in direct proportion to N-1, and reach to the detection accuracy's Heisenberg limitation as the quantum entangled plan. What's more important is the proposal disclosed by the invention has important potential application in the art of gravity wave detection, micronano displacement test, and optical top and optical sonar detection.
Owner:ZHEJIANG UNIV