65 results about "Transmission coefficient" patented technology

The invention provides a composite board detection method and system, and relates to the technical field of board detection, and the method comprises the steps: carrying out the ultrasonic scanning of a composite board, dividing the composite board into a plurality of acoustic characteristic layers, building a sound wave propagation model based on a recursive transfer matrix method, and calculating the reflection coefficient and transmission coefficient of each layer interface. A deep learning algorithm is combined with physical constraints to dynamically correct acoustic parameters, the corrected parameters are substituted into a model reconstruction signal, and defects are accurately positioned. And performing grid division on the defect position to analyze stress field distribution, and determining a stress concentration position. And fine scanning is carried out on a stress concentration area by adjusting probe parameters, and high-resolution data is obtained to update defect distribution information. And finally, outputting detection data including defect positions, stress concentration distribution and hazard levels, and realizing accurate detection and evaluation of the defects of the composite board.

This application discloses a method, apparatus, device, and medium for self-calibration of an ultrasonic sensor for transformers. The method involves obtaining the spatial distance by using the time difference and measured sound velocity of the same partial discharge pulse received by a built-in UHF antenna and an external ultrasonic sensor; constructing a cross-medium model based on the acoustic parameters of the insulating oil and the tank to calculate the sound pressure transmission coefficient at the liquid-solid interface; constructing a spherical wave dissipation equation in viscous oil by combining discharge and fluid parameters, and calculating the theoretical sound pressure of the outer shell using the distance and transmission coefficient; comparing the measured peak output voltage of the external sensor with the in-situ acoustic-electric conversion sensitivity for online self-calibration. This method reconstructs a high-fidelity sound wave propagation attenuation model, which can improve calibration accuracy and diagnostic reliability.

The invention relates to an ultra-wideband frequency selective metasurface prediction method based on a rapid prediction algorithm, and belongs to the technical field of electromagnetic engineering. Comprising the following steps: acquiring a single-layer S parameter; phase-amplitude relation modeling is carried out; and constructing a multi-layer structure and optimizing parameters. According to the prediction method provided by the invention, transmission coefficients of units under different unit parameters and different air layer thicknesses can be quickly calculated as long as S parameters of a single-layer structure are obtained; through the innovative technical means, hundreds of hours and even longer time needed by traditional full-wave simulation are greatly shortened to the level of several minutes, and therefore the time expenditure of the simulation process is remarkably reduced. By means of the improvement, the design iteration efficiency is greatly improved, clear structure adjustment guidance is provided for researchers, and resource waste and time loss caused by dependence on blind trial and error and repeated simulation in the past are avoided.

The invention relates to the technical field of ocean engineering, and discloses a wave characteristic numerical simulation method and system of a permeable breakwater structure. The method comprises the following steps: firstly, establishing a numerical model of a permeable breakwater structure, including pile foundation arrangement and geometric parameters of a breakwater body; then, wave condition parameters and structure parameters are set, and the structure parameters comprise the pile diameter, the pile distance, the water depth in front of the embankment and the wave overtopping amount; secondly, based on a computational fluid dynamics method, simulating interaction between waves and the permeable breakwater, and calculating a wave transmission coefficient and structural stress; and finally, analyzing the influence rule of each parameter on the wave transmission coefficient, and extracting the structural stress distribution under the wave action. According to the method, the wave characteristics of the open breakwater are systematically researched through a numerical simulation method, the design efficiency is remarkably improved and the physical experiment cost is reduced while the calculation precision is ensured, and a basis is provided for the optimal design of the open breakwater.

This invention discloses a method, apparatus, device, and medium for calculating electromagnetic waves in a geo-ionospheric waveguide. It obtains the pulse operating frequency set and medium parameter set of electromagnetic waves in a layered geo-ionospheric waveguide model. The electromagnetic waves consist of multiple electromagnetic waves to be calculated in different frequency bands. Based on the pulse operating frequency and medium parameter set of each electromagnetic wave to be calculated, a target calculation method for the receiving electric field is determined from multiple preset electric field calculation methods. The target transmission coefficient is determined based on the transmitting electric field at the emission point of each electromagnetic wave to be calculated, the layered geo-ionospheric waveguide model, and the target calculation method for the receiving electric field. The time-domain waveform of the electromagnetic waves is calculated based on the target transmission coefficients of multiple electromagnetic waves to be calculated and a preset electromagnetic pulse frequency domain calculation formula. In this way, the most suitable target calculation method for the receiving electric field is determined based on the pulse operating frequency set and medium parameter set of the electromagnetic waves to be calculated in different frequency bands, enabling accurate and rapid calculation of electromagnetic waves in a layered geo-ionospheric waveguide.

The application discloses an ultra-wideband polarization converter metasurface for converging lenses and spatial imaging. The cell of the metasurface is composed of two metal gratings, two pairs of L-shaped metal patches and two dielectric plates. The metasurface of the application works in the range of 0.5 to 1.8 THz, the transmission coefficient is greater than 0.87, the relative bandwidth reaches 113%, the polarization conversion rate remains close to 100%, and the phase covers 360°. The metasurface has the advantages of simple structure, small size, high bandwidth, good polarization characteristics, easy integration, low loss and simple preparation process. The metasurface combines the changes of geometric phase and amplitude, which can not only realize two-dimensional focusing lenses by using phase changes, but also realize spatial imaging functions by using amplitude changes. The research results show that the metasurface provides a new way for the flexibility of terahertz wave polarization and phase manipulation, and opens up a new way for the dynamic operation of terahertz wave fronts.

An antenna module is provided and includes a flexible circuit having a first antenna feed and a second antenna feed. The antenna module includes a ground plane. The antenna module includes a first antenna element coupled to the first antenna feed. The first antenna element includes a first ground short stub coupled to the ground plane. The first antenna element includes a first radiating element defining an omnidirectional radiation pattern. The first radiating element includes a first main segment extending along a first arcuate path. The antenna module includes a second antenna element coupled to the second antenna feed. The second antenna element includes a second ground short stub coupled to the ground plane. The second antenna element includes a second radiating element defining an omnidirectional radiation pattern. The second radiating element includes a second main segment extending along a second arcuate path oriented parallel to the first arcuate path. The first and second antenna elements have a transmission coefficient lower than −10 dB.

The invention relates to the technical field of ultrasonic detection, in particular to a method for eliminating an error of a curve measured by an ultrasonic rebound comprehensive method. The method comprises the following steps: acquiring actually measured data of an arch bottom measuring area and an arch top measuring area; further acquiring an environment difference index according to the high-frequency difference, the sound velocity value difference and the rebound value difference of the ultrasonic full-wave train signals of the two measurement areas; according to the difference between the sound velocity values of the two measuring areas and the sound velocity value of the standard model and the difference between the rebound value of the two measuring areas and the rebound value of the standard model, the distribution of environmental difference indexes is combined, and a current weighted fitting deviation coefficient is obtained; and finally, selecting the final compressive strength from the preset trial calculation set based on the weighted fitting deviation coefficient. According to the method, the environment difference index is constructed through the sound velocity, the rebound and the high-frequency transmission coefficient of the arch crown / arch bottom measuring area, the fitting deviation of the trial strength is subjected to asymmetric weighting, water-induced sound velocity virtual high is automatically exempted, abnormal rebound is blocked, and therefore the real compressive strength is decoupled under lossless blind measurement.

The invention discloses an electromagnetic pulse propagation calculation method based on a generalized propagation matrix and a transfer function method, and the method comprises the steps: determining the explosion point height and the receiving point height of an electromagnetic pulse, and constructing an ionosphere parameter on a propagation path; calculating a wave vector of the position of an electromagnetic pulse explosion point, and calculating a reflection coefficient matrix and a transmission coefficient matrix of the electromagnetic pulse which upwards penetrates through the ionized layer and downwards radiates to the ground through a generalized propagation matrix method; defining the type of the electromagnetic pulse, and calculating the amplitude of the superposed uplink and downlink electromagnetic waves at the explosion point position through the reflection coefficient matrix; in combination with a generalized propagation matrix method and a transfer function method, calculating the frequency spectrum and time domain waveform of the electromagnetic wave penetrating through the ionosphere at the explosion point position through inverse Fourier transform; time-frequency characteristic analysis is carried out according to the frequency spectrum and the time-domain waveform of the electromagnetic waves penetrating through the ionosphere, a time-frequency graph is obtained, the experiment cost is remarkably reduced, and efficient and low-cost theoretical support is provided for propagation of the electromagnetic pulses in the ionosphere.

The invention belongs to the technical field of microwave frequency selective surface and infrared reflection focusing composite metasurface structures and design. A unit of a microwave band adopts a layered structure of metal pattern-ceramic dielectric-air gap-silicon substrate. The metal pattern is a miniaturized design of a three-order nested square patch, and the unit period is only 0.164 times of the working wavelength. According to the invention, a passive factor of a silicon substrate of an infrared band and an air gap generated by actual processing are creatively converted into an active design degree of freedom, and through collaborative optimization, a transmission coefficient higher than 0.99 at a center frequency of 15GHz, a-1dB bandwidth greater than 30%, and excellent angle stability under oblique incidence of 0-45 degrees are realized. The unit reflectivity of the infrared band is higher than 99% and close to 1, phase modulation can be achieved, and the infrared metasurface has a convergence function. The device is simple in structure and easy to integrate, and a new scheme is provided for realizing a function integrated device of microwave and infrared bands.

The application relates to the technical field of antenna isolation test, and discloses an intelligent test method and system for multi-port antenna isolation performance, which comprises the following steps: sequentially testing the transmission coefficients of each group of to-be-tested ports of a measured antenna by using a network analyzer, and constructing an S parameter matrix; any group of to-be-tested ports comprises an excitation port and a response port, and the transmission coefficient is the ratio of the power of a scattering wave received by the response port to the power of an incident wave input by the excitation port; based on the S parameter matrix, the isolation of each group of to-be-tested ports at each frequency within the working frequency band of the measured antenna is calculated; the worst isolation of all groups of to-be-tested ports within the working frequency band is identified, and the worst isolation is marked as the isolation of the measured antenna. The application effectively avoids measurement errors and accidental interference, and improves the accuracy and reliability of the isolation test.

The present invention provides a method and device for calculating the microwave transmission characteristics of a dielectric-inlaid multilayer metal mesh. The method comprises: equating the dielectric-inlaid multilayer metal mesh to a single-layer Drude dispersion model; obtaining the incident wave angular frequency under the single-layer Drude dispersion model; substituting the incident wave angular frequency into a preset final dispersion equivalent formula to calculate the relative dielectric constant of the single-layer Drude dispersion model; and calculating the microwave transmission characteristics of the dielectric-inlaid multilayer metal mesh based on the relative dielectric constant and the SO-FDTD method. By equating the dielectric-inlaid multilayer metal mesh to a single-layer Drude dispersion model and calculating the overall transmission coefficient using the final dispersion equivalent formula obtained by the final fitting, the complex electromagnetic response of the multilayer structure can be simplified into a single and easy-to-process model while maintaining consistency in physical properties. This improves computational efficiency and reduces resource consumption while maintaining sufficient physical accuracy.

The application discloses a microwave detection-based imaging method for internal corrosion state of a reinforced concrete structure, and comprises the following steps: S1, setting a moving step D1 and a scanning frequency f1 of a rectangular waveguide along an X axis and a moving step D2 and a scanning frequency f2 of the rectangular waveguide along a Y axis; S2, acquiring a position interval of a steel bar in a concrete base by scanning with the rectangular waveguide; S3, obtaining a reference value matrix Γ0 of the steel bar without corrosion by scanning the concrete base with the rectangular waveguide; S4, performing X-axis parallel scanning on the reinforced concrete base by using the rectangular waveguide to obtain a transmission coefficient matrix set Γ representing a corrosion degree of the steel bar, and labeling subsets in the transmission coefficient matrix set Γ according to the corrosion degree; and S5, importing the transmission coefficient matrix set Γ and position information of the corroded steel bar into MATLAB for data imaging processing to obtain a three-dimensional stereoscopic imaging diagram. According to the scheme, engineering and technical personnel can intuitively obtain the internal corrosion state of the reinforced concrete base.

This application relates to the field of simulation optimization technology, and discloses a multi-objective design method and system for floating photovoltaic wave energy protection based on numerical simulation. The method includes: performing numerical simulation on the geometric parameter set of the FB-WEC-OFPV integrated system to obtain the transmission coefficient, capture width ratio, and levelized cost of electricity (LCOE); calculating the negative cosine value of the gradient vector at each sampling point based on the transmission coefficient and the capture width ratio to obtain the attenuation-capture conflict intensity field; cyclically supplementing and updating the surrogate model using the gradient amplitude of the attenuation-capture conflict intensity field as a priority criterion to obtain a refined sample database; and selecting the Pareto optimal engineering solution set based on the indicators in the refined sample database and the frequency integral value of the attenuation-capture conflict intensity field through multi-objective genetic algorithm optimization and high-fidelity simulation verification. This application solves the problem that the surrogate model sampling strategy cannot identify the spatial distribution of attenuation-capture physical conflicts, leading to pseudo-Pareto solutions being mixed into the optimal solution set.

This application relates to the field of electromagnetic wave and microwave technology, and provides a method, apparatus, device, and storage medium for extracting field strength distribution. The method includes: acquiring scene data; obtaining the radiation pattern and transmission coefficient of the micro-aperture using a full-wave simulation method; generating a first field distribution of a target point within a first metal cavity using a ray tracing method; generating a second field distribution of a second simulated receiver using the ray tracing method and the radiation pattern of the micro-aperture, or generating a simulated signal source for a second simulated transmitter based on the field distribution of the first simulated receiver and the transmission coefficient of the micro-aperture, and then generating the second field distribution of the second simulated receiver using the ray tracing method. The field distribution within the first metal cavity can be obtained using the ray tracing method, and then the radiation pattern and transmission coefficient at the micro-aperture can be obtained using the full-wave simulation method. Combining the ray tracing method and the full-wave simulation method can optimize the accuracy of the field distribution extraction results without consuming excessive computer memory and computation time.

The invention discloses a Huygens metasurface-based terahertz phase shifter, which relates to the technical field of terahertz propagation and phase modulation and is composed of a plurality of terahertz units of rectangular resonant rings. Each resonance unit comprises a dielectric substrate PI (polyimide) and a metal structure. The metal structure in each resonance unit is composed of a plurality of metal strips. According to the terahertz phase shifter based on the Huygens metasurface, the stable high transmission coefficient can be achieved within the working frequency band of 0.4-1.0 THz, meanwhile, the transmission phase of the resonance unit covers the wide adjustment range of over 350 degrees, and therefore flexible and accurate terahertz wave phase adjustment and control are achieved. The structure is simple and fixed, the manufacturing process is mature and reliable, and important application prospects are achieved in the fields of terahertz components, terahertz imaging, terahertz communication and the like.

The application discloses a kind of underwater acoustic metamaterial equivalent parameter test methods: the incident signal and reflected signal of the front surface of material are measured, and the reflection coefficient R containing phase information under wide frequency is obtained;Transmission signal is measured on the back surface of material, and the transmission coefficient T containing phase information under wide frequency is obtained;According to R and T, the equivalent parameter is calculated using inversion method.The application also provides a kind of test system: signal testing device, including signal generator, transducer, hydrophone, power amplifier and oscilloscope;Three-dimensional moving device is used to control the position of transducer and hydrophone, and the incident signal, reflection signal and reflection signal are collected and recorded by oscilloscope;Signal post-processing module is obtained according to incident signal, reflection signal and reflection signal processing reflection coefficient and transmission coefficient, and equivalent parameter is calculated.The test method and system can obtain complex transmission and reflection coefficient with amplitude and phase information, so as to calculate the equivalent parameter of material by inversion method.

The application provides an array antenna mutual coupling calibration method and system based on spatial multi-scale feature decoupling, relates to the technical field of antenna testing, and comprises the following steps: placing a target antenna array in a full-wave anechoic chamber, connecting two ports to a vector network analyzer, and terminating the remaining ports with a matching load; measuring and obtaining the transmission coefficient between the two ports in a preset working frequency band to represent the coupling strength between the ports; repeatedly performing the measurement operation on multiple port pairs to obtain a scattering parameter matrix representing the mutual coupling effect; and comparing the scattering parameter with a preset technical index to determine whether the antenna isolation meets the requirements. The application can comprehensively and accurately represent the mutual coupling effect of a multi-channel antenna, avoid errors caused by reflection interference in the testing process, realize rapid determination and quality control of the isolation performance, and provide a reliable basis for the design optimization and engineering application of a base station antenna.

The present application relates to a kind of equivalent modeling method of acoustic baffle, comprising the following steps, step 1, the finite element model of baffle comprising several periodic units is constructed, according to the conventional simulation process of baffle sound performance, the frequency response table of sound absorption coefficient, reflection coefficient, transmission coefficient is obtained by solving model;Step 2, the finite element model of homogeneous material of same size with the above-mentioned baffle finite element model is constructed, and three parameters a, b, c are set as the Young's modulus, Poisson's ratio and density of homogeneous material.The present application reduces the structural complexity of baffle model, the resources and time required for calculation, is conducive to the rapid iterative design of relevant acoustic structure.

The invention discloses a composite medium for realizing coherent perfect absorption and a regulation and control method thereof, the composite medium comprises a substrate medium and a filling medium, and the filling medium is filled in the substrate medium; the substrate medium is an anisotropic material; and the filling medium is non-local metal nanoparticles. The effective dielectric constant and the effective magnetic conductivity of the composite medium are calculated by applying the effective medium theory, the reflection coefficient and the transmission coefficient of the effective medium are further obtained, and coherent perfect absorption of the composite medium is represented through the scattered light intensity logarithm. In combination with the influence of the non-local effect on the coherent perfect absorption of the composite medium, the control of the coherent perfect absorption of the composite medium is realized by changing the dielectric constant of the anisotropic substrate medium, the incident angle of the coherent light beam and other parameters.

A method, device and equipment for calculating hydrodynamic characteristics of a flexible Bragg submerged dike based on frequency band control and a computer storage medium relate to the technical field of coast and ocean engineering, and the method comprises the following steps: constructing a flexible structure-water wave complete coupling mathematical model; the structural natural vibration frequency and the Bragg resonance frequency of the flexible Bragg submerged dike are calculated to determine a core wave absorption frequency band, and frequency band control conditions of the flexible Bragg submerged dike are formed; weighting the transmission coefficient, the energy loss and the wave load on the basis of a frequency band control condition in combination with a target sea condition spectrum to form a comprehensive evaluation factor, and representing the comprehensive wave dissipation performance and the structural stress performance of the submerged dike; according to the scheme provided by the invention, the hydrodynamic characteristics of the flexible Bragg submerged embankment can be accurately calculated, a scientific basis is provided for reasonable design and arrangement of the flexible Bragg submerged embankment in ocean engineering, and the wave dissipation performance and comprehensive benefits of the submerged embankment are improved.

The invention discloses a polymorphic storage system based on photon-magneton-phonon coupling. The system is composed of a microwave device layer, a magnetic thin film layer, a piezoelectric substrate layer, an acoustic transducer layer and a direct current bias coil, and a photon-magneton-phonon three-mode coupling state is achieved under double excitation of microwave pulses and sound wave pulses. The frequency and coupling strength of the coupling state can be used as a specific storage state. And the read-out of the storage state is completed through the data analysis of the microwave transmission coefficient S21. According to the invention, on-chip array integration is supported, a multi-pixel matrix structure can be expanded, and a new scheme is provided for constructing high-density, multi-energy-level and low-power-consumption information storage equipment.

This application relates to the field of wave energy simulation technology and discloses a simulation method and system for dual-mode frequency tuning of oscillating water columns in a double-slit caisson. The method includes: establishing a two-degree-of-freedom dynamic equation system based on the displacements of the water columns in the front and rear cavities, using the slit transmission coefficient as a parameter to obtain the coupling stiffness; substituting the coupling stiffness into the eigenvalue equation to decompose the oscillation modes of the two cavities to obtain the mode transformation matrix and mode amplitude ratio; performing convolution integration on the mode amplitude ratio and the wave power spectrum of the target sea area to obtain the first-order mode weight and second-order mode weight; using a preset target first-order mode weight as the outer convergence target and a preset target natural frequency as the inner convergence constraint to perform a double-layer nested iterative solution on the slit transmission coefficient and the rear cavity volume to obtain the optimal slit width and the optimal rear cavity volume. This application solves the problem of unobservable and undesignable energy contribution ratios of each mode in existing technologies, leading to spectral mismatch.

The invention relates to the technical field of antenna isolation testing, and discloses an intelligent testing method and system for the isolation performance of a multi-port antenna, and the method comprises the steps: sequentially testing the transmission coefficients of each group of to-be-tested ports of a tested antenna through a network analyzer, and constructing an S parameter matrix; any group of ports to be tested comprises an excitation port and a response port, and the transmission coefficient is the ratio of the power of scattered waves received by the response port to the power of incident waves input by the excitation port; respectively calculating the isolation degree of each group of ports to be tested at each frequency in the working frequency band of the tested antenna based on the S parameter matrix; and identifying the worst isolation degree of all groups of ports to be tested in the working frequency band, and marking the worst isolation degree as the isolation degree of the tested antenna. According to the invention, measurement errors and accidental interference are effectively avoided, and the accuracy and reliability of the isolation test are improved.

This invention provides a method and system for detecting composite panels, relating to the field of panel inspection technology. The method includes ultrasonically scanning the composite panel and dividing it into multiple acoustic characteristic layers. A sound wave propagation model is constructed based on the recursive transfer matrix method to calculate the reflection and transmission coefficients of each layer interface. A deep learning algorithm combined with physical constraints is used to dynamically correct the acoustic parameters. The corrected parameters are then substituted into the model to reconstruct the signal and accurately locate defects. A mesh-based analysis of the stress field distribution is performed at the defect location to determine stress concentration points. By adjusting probe parameters, a fine scan of the stress concentration area is performed to obtain high-resolution data and update the defect distribution information. Finally, the system outputs detection data including defect location, stress concentration distribution, and hazard level, achieving accurate detection and assessment of defects in the composite panel.

This invention discloses a method and apparatus for analyzing the electrical performance of a radome based on polygon vertex control, comprising: randomly generating multiple sets of radome thickness error distributions; calculating the first far-field radiation pattern interval of the radome corresponding to the multiple sets of radome thickness error distributions, and extracting the first variation interval of the radome's performance indicators; calculating the amplitude and phase variation intervals of the transmission coefficient at each point on the radome, obtaining the sector intervals formed by the transmission coefficient at each point on the radome in the complex domain; dividing the sector intervals formed by the transmission coefficient at each point on the radome in the complex domain into polygon intervals in the real domain, rewriting the polygon intervals of the transmission coefficients as intervals of the radome's far-field values ​​and summing them, performing vertex control on the redundant polygon intervals before each summation, obtaining the second far-field radiation pattern interval of the radome, and extracting the second variation interval of the radome's performance indicators; comparing the first variation interval and the second variation interval to analyze the radome's performance indicators. This invention can improve analysis efficiency.

The application discloses a kind of suitable for deep brackish aquifer seismic reflection wave response high fidelity simulation calculation method, the method includes S10: according to brackish aquifer development characteristics, establish brackish aquifer pore fluid rock physics model, calculate the viscosity, density, longitudinal wave velocity and bulk modulus of brackish aquifer pore fluid;S20: according to brackish aquifer development characteristics, establish brackish aquifer multi-scale rock physics model, obtain brackish aquifer equivalent stiffness matrix;S30: establish geology-seismic forward modeling;S40: utilize propagation matrix method to calculate brackish aquifer reflection and transmission coefficient matrix;S50: calculate brackish aquifer reflection wave seismic response.The application combines seismic rock physics modeling and seismic forward simulation technology, considers the viscoelasticity characteristics and thickness of brackish aquifer, is more in line with actual geological conditions, low in cost, high in accuracy, can quickly and accurately calculate deep brackish aquifer seismic reflection wave response, provides theoretical support for the evaluation and optimization of carbon storage space.

This application relates to the field of marine engineering technology, and discloses a floating breakwater with a resonant cavity and its hydrodynamic performance analysis method. The method includes: constructing a floating breakwater model; determining the target length and target width of the resonant cavity, the wave-facing open-type wave-dissipating chamber, and the wave-repelling open-type wave-dissipating chamber on the leeward side; dividing the entire fluid domain of the floating breakwater into multiple regions; obtaining the velocity potential of each region; calculating the wave force of the floating breakwater; using the velocity potential of each region to express the added mass and radiation damping of the floating breakwater when it undergoes unit forced oscillation, so as to construct the motion response equation of the floating breakwater in the frequency domain under wave action; obtaining the transmission coefficient and energy dissipation coefficient of the floating breakwater through the equation set, and evaluating the shielding performance and wave-dissipating performance of the floating breakwater based on each coefficient. The synergy of the resonant cavity and the open-type wave-dissipating chamber can improve the wave-dissipating efficiency, and the analysis method can provide an efficient and reliable basis for the design of breakwaters.

The application claims a terahertz beam deflector based on a Huygens super surface, relates to the technical field of terahertz, and is composed of five resonant units with different shapes and sizes in the horizontal direction, and the units are periodically arranged in the vertical direction. Each resonant unit comprises a dielectric substrate PI (polyimide) and a metal structure. The metal structure in each resonant unit is composed of multiple metal strips, and a metal opening is designed between specific metal strips in each group of metal structures. The terahertz beam deflector based on the Huygens super surface has the advantages that the incident terahertz waves can be refracted and deflected, and the transmission coefficient is relatively high. The structure is simple, the manufacturing process is mature, and the terahertz beam deflector has important application prospects in the fields of terahertz components, terahertz sensors and the like.

The application discloses a kind of water power parameter analysis method and system of multi-module articulated laminated structure, and the water power parameter analysis method is specifically as follows: design the complete boundary value problem of wave and the interaction of multi-module articulated laminated structure, based on the unknown complex expansion coefficient in velocity potential of complete boundary value problem, then unknown complex expansion coefficient is used to calculate the reflection coefficient, transmission coefficient, dimensionless deflection, dimensionless bending moment and dimensionless shear force of laminated structure, and the hydroelastic response of multi-module articulated laminated structure is characterized.The method of the application can quickly complete the water power parameter analysis of multi-module articulated laminated structure.