49 results about "Phase coupling" patented technology

The invention discloses a meeting window call system based on a voice sensor, and relates to the technical field of communication. Comprising a full-space voice acquisition module, a dynamic confidence evaluation module, a phase coupling enhancement module, a multi-dimensional speech mode recognition module, a dynamic gain adjustment and tone quality enhancement module and a full-link voice integrity verification module, an array type voice sensing unit is deployed based on audio reflection characteristics, a multi-band full-space acquisition matrix is constructed, voice signals of two parties meeting are acquired, and a basic audio data stream with a high signal-to-noise ratio is output. According to the invention, through array sensing acquisition, dynamic confidence evaluation, phase coupling and harmonic enhancement, multi-dimensional speech recognition and dynamic gain adjustment, accurate recognition and fidelity enhancement of low-volume speech are realized, and through combination of full-link integrity verification and mistaken killing backtracking, weak signals are ensured not to be missed and distorted, so that the accuracy of speech recognition is improved. And the privacy, the security and the information integrity of the meeting call are improved.

The invention relates to the technical field of connector regulation and control, and discloses an efficient energy storage connector dynamic regulation and control system based on a nonlinear coupling mechanism. The system comprises an establishment module used for establishing an energy storage connector system model based on a voltage signal and a current signal of an energy storage connector; the disturbance identification module is used for performing nonlinear coupling disturbance identification on the energy transmission process according to the energy storage connector system model to obtain an additional coupling loss component, a dynamic impedance drift component and a phase coupling offset component; the dynamic observation module is used for performing weighted analysis through a nonlinear coupling dynamic observer to obtain a coupling mechanism observation result; and the generation module is used for generating an energy transmission path regulation and control instruction containing the conduction angle compensation amount and the phase synchronization compensation amount based on the coupling mechanism observation result. According to the invention, stable operation can be realized under complex working conditions such as load abrupt change and coupling impedance fluctuation, and the transmission efficiency is maximized.

The invention belongs to the technical field of nano materials, and relates to a carbon thermal reduction driven high-entropy oxide metastable-state material and a preparation method and application thereof.The preparation method comprises the steps that S1, carbon and soluble metal salt are dissolved in a solvent for ultrasonic treatment, and a metal salt solution and a carbon suspension are obtained; s2, adding a metal salt solution into the carbon suspension, adding strong base, and stirring to obtain a coprecipitation polymer; s3, re-dispersing the coprecipitation polymer in the solvent, adding extra ferric salt and urea, mixing and stirring, and freeze-drying the mixed solution to obtain precursor powder; s4, performing staged annealing treatment on the precursor powder under low oxygen partial pressure to obtain a carbon-loaded high-entropy oxide metastable-state material; the prepared high-entropy oxide metastable-state material is of an alloy phase and high-entropy oxide double-phase coupling structure, the polarization loss of electromagnetic waves is enhanced through a heterogeneous interface, and the high-entropy oxide metastable-state material has the advantages of being excellent in impedance matching and wide in electromagnetic wave absorbing bandwidth and can be widely applied to the fields of industrial electronics, medical communication and military stealth.

The invention relates to the technical field of laser cutting, and discloses a steel plate laser cutting machine fault detection method and system, and the method comprises the steps: collecting a driving power supply current signal in real time, and filtering a DC component to obtain an AC sequence; separating multi-scale sub-band components containing Gaussian noise by using wavelet transform; performing empirical mode decomposition on the sub-band components, and extracting an intrinsic mode function component set; calculating a kurtosis value and a kurtosis change rate of the component and a phase coupling index based on bispectrum analysis, and constructing a high-order statistical feature vector; a support vector machine is adopted to classify the feature vectors so as to output operation state category labels; generating a fault early warning grade value by combining the tag risk value and the kurtosis evolution trend slope; and the historical state sliding window sequence and the fault confirmation confidence coefficient are used for verification, and the early fault state is confirmed. According to the method, the problem of low nonlinear fault feature extraction accuracy under a complex noise interference background in the prior art can be solved.

An active transmission type intelligent metasurface and a matching circuit applied to the intelligent metasurface, the circuit comprising: a receiving antenna for receiving an electromagnetic wave signal; a power amplification unit for amplifying the electromagnetic wave signal received by the receiving antenna; a phase coupling unit for modulating the amplified electromagnetic wave signal into electromagnetic wave signals with various phase differences; a phase selection unit for selecting an electromagnetic wave signal with a required phase difference from the electromagnetic wave signals with various phase differences; and a radiation antenna for radiating the electromagnetic wave signal with the corresponding phase difference; the intelligent metasurface comprises a plurality of active transmission intelligent metasurface units arranged periodically to form an N*M array, and each active transmission intelligent metasurface unit in the array comprises an active transmission circuit. The present application realizes the active amplification function which the existing transmission RIS structure does not have and has the 2-bit phase control function, and the present application has low design complexity, low deployment cost and good system performance.

The invention discloses a robot control method based on active disturbance observation and phase coupling control, and the method comprises the steps: collecting the current state quantity of a robot in real time, and constructing a joint space dynamic model; generating state estimation and disturbance estimation in the joint space dynamic model; a phase parameterization method is adopted to map the phase of the multi-degree-of-freedom action to an expected trajectory, and a closed-loop trajectory tracking and disturbance compensation control law is designed in combination with disturbance estimation and a sliding manifold mechanism; according to the method, a position error transformation design continuously-derivable robot auxiliary level function is introduced, the stability is analyzed by adopting a Lyapunov method, and a closed-loop trajectory tracking and disturbance compensation control law and a coupling gain adaptive law are substituted into a time derivative of a candidate Lyapunov function to complete the control of the robot. The control output can be kept smooth and continuous, instruction sudden change or attitude instability is avoided, high action success rate and landing stability can still be maintained when the environment changes, and the landing impact load peak value is effectively reduced.

The three-phase coupling carrier communication phase switching system comprises a three-phase coupling circuit, a three-phase signal switching module, a carrier power amplifier and a carrier MCU which are connected in sequence, the control signal output end of the carrier MCU is connected with the corresponding control signal input end of the three-phase signal switching module, and the carrier MCU is connected with the corresponding control signal input end of the three-phase signal switching module. And the control module is used for analyzing the received carrier data frame, extracting the signal strength and the signal-to-noise ratio, selecting an optimal phase, generating a control signal to drive a triode in the three-phase signal switching module, and dynamically adjusting the coupling phase of three-phase carrier communication. On the premise that carrier communication performance is not affected, communication coupling phases can be switched according to field environment noise and power line conditions, and therefore higher meter reading communication efficiency is achieved.

The invention discloses an electromagnetic wave phase-polarization decoupling control system, belongs to the technical field of optical communication and quantum optics, and is suitable for equipment such as a quantum communication receiver and a laser radar. The invention aims to solve the problems of high bit error rate (greater than 8%) caused by phase symbol chaos and crosstalk (crosstalk coefficient is only-25dB) caused by polarization and phase coupling in the prior art. The system realizes decoupling through two core mechanisms: one is a phase expression forced unification module which uniformly converts an input electromagnetic wave phase into a standard form e (i (kx omegat)), comprises a phase detector, a converter and a calibration unit, and eliminates symbol chaos; and the Hilbert space tensor product regulation and control hardware realizes independent regulation and control of a polarization state and a phase state through a polarization liquid crystal array, a phase modulator and a tensor product operation unit based on a quantum state tensor product principle (psi gt, = [polarization state] [phase state]), and cuts off a physical coupling path. The method has the beneficial effects that the phase symbol chaos rate is reduced to 0%, and the crosstalk coefficient is increased to-45dB; when the method is applied to quantum communication, the bit error rate is less than or equal to 1.2%, and the key distribution rate is doubled; when the method is applied to the laser radar, the ranging error is less than or equal to + / -1cm, and the haze environment target recognition rate is improved from 60% to 85%. According to the invention, efficient decoupling of phase and polarization is realized, and the performance of optical communication and quantum optical equipment is remarkably improved.

The invention relates to the technical field of electronic magnetic elements, and discloses a coupling winding and a multi-phase coupling inductor. Wherein the coupling winding comprises N-phase windings, each phase winding comprises a main winding and an interlaced winding, the main winding and the interlaced winding are connected in series, the main winding is wound on the side column of the phase, and the interlaced winding is wound on the side column of the adjacent next phase in a bridging manner; and the N phases of windings are sequentially and circularly connected to form a cyclic symmetric topology, so that two adjacent phases of winding layers with inherent phase difference are simultaneously stacked on any magnetic column to realize active offset of interlayer magnetomotive force. According to the invention, each phase of winding is arranged to be of a series structure of the main winding and the staggered winding, and a cyclic symmetric cross-phase arrangement mode is adopted, so that two adjacent phase winding layers with an inherent phase difference are stacked on the same magnetic column at the same time, and interlayer magnetomotive force active offset can be realized by using a natural current phase difference of a multi-phase system; eddy-current loss caused by the high-frequency proximity effect is inhibited from the source, and high-frequency alternating-current copper loss of the magnetic element is greatly reduced.

The application discloses a kind of by dynamic phase coupling electromagnetic field device auxiliary vacuum diffusion welding method, belong to metal material solid-phase welding technical field.The method aims at solving the problems, such as grain coarsening, joint performance decline and heterogeneous material welding uneven caused by high temperature and long time heating in traditional diffusion welding process.The core scheme includes: (1) surface treatment, clamping positioning and vacuum pretreatment are carried out to the workpiece to be welded;(2) double-band nested induction coil structure is used, and pulse current module is loaded cooperatively, three-module electromagnetic field is realized by FPGA chip dynamic phase coupling, and periodic oscillation electromagnetic pressure field is formed;(3) based on convolution neural network model, parameters are real-time regulated during welding process, and interface diffusion behavior is optimized.The application realizes deep cooperation of pulse joule heat and induction eddy current heat through dynamic phase coupling mechanism, significantly reduces welding temperature and shortens welding time, is especially suitable for high-quality connection of copper alloy, molybdenum alloy and other heterogeneous materials, the joint tensile strength is improved, and the structure is uniform, corrosion resistance is excellent.

The invention relates to a three-phase transformer simulation model, a modeling method thereof and electronic equipment, and the method comprises the steps: building a capacitance equivalent circuit of a three-phase transformer, and enabling the capacitance equivalent circuit to comprise the ground capacitance and turn-to-turn capacitance of each phase winding of the three-phase transformer; all phase windings of the three-phase transformer are connected in a triangular mode to form a triangular topology; the impedance value of the winding is measured based on the triangular topology, and frequency domain analysis is carried out based on the impedance value to determine the ground capacitance and turn-to-turn capacitance of each phase of winding, so that the accuracy of model parameters is ensured. By accurately establishing the high-frequency simulation model of the transformer, the inter-phase coupling effect in the lightning stroke transient state can be accurately simulated, the high-frequency capacitance characteristic of the triangular connection side of the three-phase transformer is effectively reflected, the voltage distribution prediction precision is remarkably improved, and a more reliable basis is provided for lightning stroke protection design.

The invention relates to a cable insulation fault positioning method and system, and the method comprises the following steps: collecting a three-phase voltage traveling wave signal when a cable has a single-phase insulation damage grounding fault, and carrying out the signal decoupling, and obtaining an independent line mode component and a zero mode component; a Db45 wavelet basis is used as a mother wavelet, multi-scale wavelet decomposition and reconstruction are carried out on the decoupled line mode component so as to extract fault traveling wave head features, and the number of layers of multi-scale wavelet decomposition is determined according to the sampling frequency and the power grid fundamental wave frequency; and according to a wavelet reconstruction result, detecting the moment when a fault traveling wave head arrives at monitoring points at two ends of the line, thereby calculating the distance from a fault point to one end of the line. Compared with the prior art, the method has the advantages that inter-phase coupling interference is eliminated through phase-mode transformation, and serious voltage distortion and harmonic interference in a power grid are effectively suppressed by using the excellent time-frequency localization characteristic of the Db45 wavelet basis, so that the accuracy and reliability of cable insulation fault positioning are greatly improved.

The application discloses an interference displacement measuring device based on Sagnac structure, solves the problem that the displacement measurement error of a right-angle prism is relatively large in the prior art, and the displacement measurement of the right-angle prism and a plane mirror cannot be simultaneously applied, the right-angle prism is used instead of the plane mirror, the influence of the original reflection of multi-order virtual reflection light is avoided, in the case of obtaining four times of optical subdivision, compared with a laser interferometer available on the market and reported in the literature, the application uses a to-be-measured right-angle prism to form a Sagnac structure, and uses a phase decoupling form formed by a measurement structure and a reference structure, so that the measurement error of the to-be-measured right-angle prism in phase shift is reduced by using the measurement reference of the to-be-measured right-angle prism, the periodic nonlinear error of the measurement system is reduced, the measurement error of the to-be-measured right-angle prism in phase shift is weakened by using the phase coupling of the reference and the measurement, and the displacement measurement precision is improved.

The invention relates to the technical field of power supplies, and discloses a multiphase coupling inductor, a multiphase coupling inductor module, a multiphase power supply module and electronic equipment. According to the multi-phase coupling inductor, the four winding layers which are sequentially stacked in the first direction are integrally arranged through the magnetic materials, the four winding layers comprise the two layers of primary windings and the two layers of secondary windings, and the two layers of secondary windings and one layer of primary winding are arranged in a coupled mode. The multi-phase coupling inductor is small in size and large in current density.

This invention relates to the field of semiconductor technology and provides a surface-emitting laser, an optical module, and a high-speed optical engine. The surface-emitting laser includes a device body comprising an optical lasing region and a current crosstalk region. The current crosstalk region is located inside the optical lasing region, and the optical lasing region is divided into at least two resonant chambers by the current crosstalk region. A portion of the current crosstalk region is insulated so that when the two resonant chambers are enabled by their respective electrodes, a portion of the current in one resonant chamber is fed into the other resonant chamber through the uninsulated portion of the current crosstalk region, achieving coupled superposition phase (coherence). This allows for the modulation of the two chambers (superposition, cancellation, one strong and one weak). This coupling results in a high-order, two-dimensional, and phase-coupled oscillation state, which is beneficial for single-mode emission. This single-mode characteristic allows the modulation response to provide a suitable pulse shape for digital data transmission.

The application provides a satellite orbit height and phase coupling adjustment optimal control method and system, comprising: setting a satellite orbit height, a height and phase adjustment amount, and a total number of orbit control circles; performing orbit height adjustment twice, and calculating a speed increment required for each orbit height adjustment; processing the two orbit height adjustments according to a total number of orbit control circles and an eccentricity keeping criterion, and generating a corresponding first control sequence and a second control sequence; considering the coupling influence of height adjustment on phase, calculating a phase actual adjustment amount for each control method in the first control sequence and the second control sequence; calculating a speed increment required for three times of pulse control; calculating a corresponding total speed increment in the first control sequence and the second control sequence, and finding a minimum value in all total speed increments to form a coupling adjustment optimal control strategy. The application can realize the coupling optimal adjustment of height and phase within a specified orbit control circle number with a minimum speed increment, and prolongs the on-orbit life of a satellite.

The invention relates to an amplitude-phase coupling type antenna array initial excitation estimation method based on amplitude measurement, and belongs to the technical field of antenna calibration. According to the method, a precise signal model containing amplitude-phase coupling characteristics is established, and a corresponding optimization solution strategy is designed, so that high-precision estimation of the initial excitation of the array unit can be realized without phase information. The initial excitation estimation method only based on amplitude measurement is suitable for an antenna array system with amplitude-phase coupling characteristics, and the initial excitation estimation of the antenna array element can be realized without obtaining phase information.

The present application relates to the technical field of fatigue detection, in particular to a hybrid tractor fatigue spectrum mutation detection method for multi-dimensional channel synchronous positioning, comprising the following steps: synchronously collecting and aligning three-channel vibration signals of the hybrid tractor to generate a synchronous multi-dimensional signal; extracting a dominant coupling strength characteristic quantity of a coupling relationship matrix in a preset characteristic frequency band in real time from the synchronous multi-dimensional signal to form a dominant coupling strength time sequence; determining a spectrum characteristic mutation point representing the fatigue state evolution of a key component and outputting an alarm signal. The present application can not only reflect the strongest mode of global coupling relationship, but also be highly sensitive to instantaneous energy concentration and mode enhancement. Compared with traditional amplitude correlation coefficient methods, the present application retains phase coupling information and can capture the global system coupling mode mutation caused by fatigue cracks, gear tooth breakage, bearing jamming and the like to realize rapid identification of potential faults of key components in an early stage.

The invention discloses a ring oscillator based on multi-phase coupling calibration, which belongs to the technical field of radio frequency integrated circuit design and comprises three mutually coupled oscillation loops based on three-stage delay units and calibration loops among the oscillation loops. In the structure, an input node of a delay unit of each oscillation loop is connected with a calibration unit of a calibration loop, when phases at two ends of the calibration unit are inconsistent, oscillation loop current is redistributed through the calibration unit, and phase alignment is realized through a current real-time compensation mechanism; after the three oscillation loops are mutually coupled, phase jitter caused by external noise disturbance of any oscillation loop can be fed back to the other two oscillation loops through the calibration loop, so that automatic compensation and equalization of phase errors are realized in the whole system, and the phase noise of each oscillation loop is effectively reduced. Meanwhile, the dynamic phase calibration mechanism of the three oscillation loops significantly enhances the single event effect resistance of the circuit.

The invention relates to the technical field of acoustic holographic imaging, and relates to a super-resolution acoustic holographic imaging method and system based on amplitude-phase coupling modulation. Obtaining a target image, and generating an amplitude hologram; based on a physical model of sound wave propagation, establishing a coupling relation model between the complex sound pressure amplitude and the phase of the amplitude hologram; inversely inverting the amplitude hologram based on a time inversion principle, and inversely solving coupling focusing phase distribution of super-resolution focusing through a horny lizard optimization algorithm according to the coupling relation model; coupling the amplitude hologram with the coupling focusing phase distribution obtained by inversion to generate a coupling amplitude hologram; and based on the coupling amplitude hologram, reconstructing and outputting a super-resolution sound field. The modulation of the hologram by the focusing phase provided by the invention not only breaks through the diffraction limit, but also realizes the high-resolution control of the far-field sound wave, overcomes the limitation of the traditional near-field evanescent wave method on the action distance, and provides a new physical basis and technical approach for far-field high-resolution acoustic information transmission and imaging.

The invention provides a bidirectional amplifier and electronic equipment, the bidirectional amplifier comprises a low noise amplification module, a power amplification module and a multiplexing matching network module, the multiplexing matching network module comprises a three-coil transformation unit, a first switch and a second switch; the first switch and the second switch are used for switching in-phase coupling of a second winding and a third winding in the three-coil transformation unit according to the sent voltage signal and switching in-phase coupling of the second winding and the third winding according to the received voltage signal; therefore, high isolation of a sending signal of the bidirectional amplifier, power additional efficiency of a high-frequency output signal and high gain and low noise of a receiving signal are realized. And the first switch and the second switch are embedded in the three-coil transformation unit, so that the chip area is not additionally occupied, and the advantages of high area efficiency and low cost are achieved.

The invention relates to the technical field of information hiding, in particular to a quantum generative adversarial network steganography system based on double discriminators and an information hiding method. The system comprises a quantum generator G theta theta, a distribution discriminator and a steganalysis discriminator S. Each layer of the quantum generator G theta theta is sequentially provided with an Rx rotating door, an Ry rotating door and an Rz rotating door to form a complete single-bit rotating degree of freedom, the door sequence adopts Rz (theta z) * Ry (theta y) * Rx (theta x), Rx regulates amplitude distribution, Ry gives consideration to amplitude and phase coupling, Rz carries out fine phase calibration, and Rz carries out steganalysis. An entanglement layer adopts hybrid topology, an annular controlled NOT gate CNOT is applied to each layer, and interval controlled NOT gates CNOT are additionally applied to even layers. According to the quantum steganography system, collaborative improvement of the quantum steganography system in three dimensions of distribution fitting precision, steganography safety and training stability is realized.

The application discloses a design method of a phase group modular structure for improving fault tolerance of a permanent magnet motor and considering low torque ripple, and solves the problem that fault tolerance performance and low torque ripple are difficult to be considered simultaneously. The method comprises a design principle of phase group modularization, and the teeth and the shoe of module I, module III and module V in the phase group modularization are offset clockwise, and the teeth and the shoe of module II, module IV and module VI are offset counterclockwise. The application combines the phase group modular structure and the tooth and shoe offset, and the method is used for an 18-slot / 16-pole permanent magnet motor. Since there are fault tolerance teeth between each module, the method can effectively reduce inter-phase coupling; the winding configuration is changed, the self-induction amplitude is improved, and short-circuit current is effectively inhibited; and the teeth and the shoe of each module are offset, so that the tooth slot torque amplitude is inhibited, and torque ripple is reduced. The method realizes the improvement of fault tolerance while considering low torque ripple.

The invention discloses an electromagnetic scale stabilization control method and system considering energy amplitude phase coupling, and the method comprises the steps: calculating an active power reference value of a converter based on the variable quantity of the voltage amplitude and the variable quantity of the voltage phase of a filter capacitor at an outlet of the converter in combination with an active power output initial set value; calculating a reactive power reference value of the converter based on the variation of the voltage phase of the filter capacitor at the outlet of the converter and the variation of the voltage amplitude in combination with a reactive power output initial set value; calculating current reference values of a d axis and a q axis based on the active power reference value and the reactive power reference value of the converter; and based on the current reference values of the d axis and the q axis and the actual current signals of the d axis and the q axis, a three-phase modulation voltage signal is obtained, and the three-phase modulation voltage signal is used for controlling the converter after being subjected to PWM (Pulse-Width Modulation). According to the invention, adverse effects of energy coupling dynamics caused by constant power control of power electronic equipment on system stability can be avoided.

The utility model discloses a three-way output transmission structure and a switching power platform, and belongs to the technical field of household appliances. The three-way output transmission structure comprises a double-output-part motor, a first transmission part and a second transmission part, wherein the double-output-part motor comprises a first output part and a coupling output part; the coupling output part is used for providing power for the phase-changing coupler, and the phase-changing coupler comprises a second output part and a third output part; the rotating speed corresponding to the first output part is larger than the rotating speed corresponding to the second output part, and the rotating speed corresponding to the second output part is larger than the rotating speed corresponding to the third output part. According to the technical scheme of the utility model, the output parts with three levels of rotating speeds are integrated together, and an operation basis is provided for vegetable preparation operations such as mincing, dough kneading-dough extruding, vegetable cutting, meat cutting and the like.

The invention discloses a multi-phase power supply phase coupling interference suppression system and method, and relates to the technical field of power supplies, and the system comprises an interference feature extraction module and a compensation module. The interference feature extraction module is used for acquiring a first interference voltage signal of a reference voltage port and switching voltage signals of a plurality of first nodes, and extracting interference feature parameters based on the first interference voltage signal and the switching voltage signals; the interference characteristic parameters comprise an interference frequency, an interference amplitude and an interference initial phase. The compensation module is used for receiving the interference characteristic parameter, generating a first compensation voltage signal based on the interference characteristic parameter, transmitting the first compensation voltage signal to the reference voltage port, and correcting the first interference voltage signal. The technical problem that the reference voltage signal of the reference voltage port of the single-phase load power supply fluctuates due to the interference of the multi-phase power supply is solved, and the stability and reliability of the single-phase load point power supply are improved.

The invention discloses a segmented roller power supply system synchronous control method and system for electromagnetic stirring of wide and thick slabs, a phase and frequency compensation instruction is added in a feedback control link of output current of each power supply unit, the output current of each power supply unit is controlled to be synchronous with specified reference current, and the multi-roller synchronous electromagnetic stirring requirement of an electromagnetic stirring power supply is met. The output current of each power supply is detected in real time, the amplitude and phase of the output current are extracted in real time through a phase-locked loop, a center phase and the offset thereof are introduced on the basis of multi-channel phase coupling of each unit, the center phase and the offset thereof are compensated to a current angular frequency and added to a current instruction in real time, and the synchronous control precision of the power supply system is improved. And the synchronization function of output current of a plurality of two-phase orthogonal power supplies is realized. Therefore, for multiple groups of electromagnetic stirring rollers needing to output the same magnetic potential, the control method can solve the problem that synchronous electromagnetic stirring forces of the multiple rollers are mutually counteracted.

The invention relates to the technical field of power distribution network voltage measurement, and discloses a closed space three-phase voltage non-contact measurement method based on transmission matrix inverse transformation, which comprises the following steps: acquiring aliasing voltage through a non-contact voltage sensor; calculating an inter-phase coupling coefficient and a phase shift coefficient among the three-phase conductors; constructing a transmission matrix based on the coupling coefficient and the phase shift coefficient; and solving an inverse matrix of the transmission matrix to obtain three-phase independent actual phase-to-ground voltage, and finally calculating three-phase actual voltage. An amplitude coupling coefficient and a phase shift coefficient between the non-contact voltage sensor and a conductor are obtained in a closed space, and a transmission matrix is constructed; inversion is carried out on the transmission matrix, and three-phase independent voltage is obtained through measurement voltage and inverse matrix decoupling calculation. Inverse transformation of the transmission matrix is used to suppress the interphase coupling influence, and the measurement precision of the non-contact voltage sensor in a closed space is significantly improved.

A triaxial atom magnetometer full-band decoupling method based on a complex transfer matrix aims to solve the problems in the existing triaxial SERF atom magnetometer decoupling technology, comprehensively considers amplitude and phase coupling information and realizes full-band and high-precision triaxial magnetic field decoupling measurement, and is characterized by comprising the following steps: modeling a triaxial SERF atom magnetometer measurement system into a linear system; a complex transfer matrix representing amplitude and phase linear coupling characteristics among three axes in a full frequency band is obtained through calibration, a measured three-axis response signal is converted by using an inverse matrix of the complex transfer matrix in measurement, and a three-axis magnetic field after full frequency band decoupling is solved. On the premise of considering complete phase information for the first time, three-axis complete decoupling measurement is realized, dependence on magnetic field compensation is remarkably reduced, and a universal solution is provided for high-precision full-band vector magnetic field measurement.

An antenna device is provided, including a plurality of radiators, a plurality of first feeding portions, a plurality of second feeding portions, a plurality of phase couplers, and a plurality of beamforming units; each of the first feeding portions is corresponded to each of the second feeding portions respectively; each phase coupler is correspondingly connected to each first feeding portion and each second feeding portion, each of the phase couplers is corresponded to each of the radiators; the beamforming units include a plurality of transmitting beamforming units and a plurality of receiving beamforming units; projection areas of each of first feeding portion and each second feeding portion on the corresponding radiator at least partially overlap; each phase coupler is respectively connected to one transmitting beamforming unit and one receiving beamforming unit.