61 results about "Field separation" patented technology

A method for measuring gas temperature and flow velocity through sound waves comprises a sound wave transmitting end, a sound wave receiving end, a signal processing end, a central calculation end and a visualization module, the sound wave transmitting end is used for transmitting sound wave signals and capturing echo signals, and the sound wave receiving end is used for receiving the sound wave signals and transmitting the echo signals; the signal processing end is used for preprocessing sound wave signals and calculating propagation time of sound waves, the central calculation end is used for calculating gas temperature and gas flow velocity, and the visual module is used for displaying a real-time change curve of the gas temperature and the gas flow velocity. The invention provides an improved acoustic multi-path flow field real-time separation algorithm for signal processing, provides an improved multi-path flow field coupling acoustic temperature measurement algorithm for gas temperature calculation, provides an improved multi-path temperature flow coupling dynamic speed measurement algorithm for gas flow velocity calculation, and provides a better scheme for a method for measuring the gas temperature and flow velocity through sound waves.

The invention belongs to the technical field of gravity and magnetic method exploration data processing, and relates to a source body positioning method based on intelligent gravity and magnetic field separation and Euler deconvolution, which comprises the following steps: setting gravity and magnetic abnormal field modeling parameters according to geological and physical property data of a research area; generating an initial seed point in the underground three-dimensional grid and expanding and growing the initial seed point to generate Q independent abnormal field models; mapping the position of the model to a real coordinate, and calculating to obtain a forward modeling abnormal field data set; extracting the maximum value of the global absolute value of the data set and sorting in an ascending order, superposing the first p absolute values to generate a composite field, and constructing a field separation data set by taking the p absolute value as a target field and the composite field; using the field separation data set to train the field separation network until convergence; inputting measured data score departure field and residual field data, and selecting data for iterative separation according to requirements to obtain a field separation result; and obtaining a preliminary positioning result by using a field separation result and combining with an Euler deconvolution method, and determining final source body positioning after screening. The method has the beneficial effects that multi-scale geological target field separation can be realized, and source body positioning can be determined.

The invention discloses a voice separation method, electronic equipment, a storage medium and a computer program product, and relates to the technical field of signal processing, and the method comprises the steps: carrying out the beam forming of a microphone array signal through employing a preset near-field speaker direction as a voice enhancement direction, and obtaining a first near-field speaker signal; performing beam forming processing on the microphone array signal by taking a preset far-field speaker direction as a voice enhancement direction to obtain a first far-field speaker signal; inputting the first near-field speaker signal as a main signal and the first far-field speaker signal as a reference signal into a preset near-field separation model for processing to obtain a second near-field speaker signal; and inputting the first far-field speaker signal as a main signal and the first near-field speaker signal as a reference signal into a preset far-field separation model for processing to obtain a second far-field speaker signal. According to the invention, the far and near field signals are preliminarily separated, so that the computing power resource consumption of a voice separation algorithm is reduced.

A hollow fiber flow field separation system used in the method comprises a hollow fiber flow field separation channel, the hollow fiber flow field separation channel is divided into an inner layer and an outer layer and is provided with a three-way port, the outer layer is a silicon dioxide tube, and the inner layer is a silicon dioxide tube; the inner layer is a hollow fiber membrane made of a polyether sulfone material; the plunger pump is communicated with the hollow fiber flow field separation channel so as to pump the flow carrying liquid to flow in the hollow fiber flow field separation channel; the metering valve is communicated with the hollow fiber flow field separation channel so as to control the flow velocity ratio of the inlet and the outlet of the hollow fiber membrane in the focusing process; the valve is communicated with the hollow fiber flow field separation channel, and the switching of the sampling process, the focusing process and the elution process of the carrier liquid in the hollow fiber flow field separation channel is sequentially controlled by changing the flow direction of the channel. The method has the advantages of high anti-interference capability, high purification speed, high separation accuracy, simplicity in operation and the like, and is expected to be used for separating and quantifying polystyrene nanoparticles in complex matrix samples such as environment or biological tissues.

The invention discloses a viscoelastic wave reverse time migration imaging method based on finite difference algorithm solution, and the method comprises the steps: S1, combining with the complex modulus of a constant Q model, and deriving a viscoelastic wave attenuation equation suitable for finite difference algorithm solution through introducing weighting function approximation; s2, establishing a viscoelastic wave compensation equation by introducing a compensation item for compensating energy attenuation when seismic waves are propagated in a viscoelastic medium, and combining the wave field compensation item with low-pass filtering for calculation to realize stable compensation of a wave field; s3, performing longitudinal and transverse wave field separation on the seismic source wave field and the detector wave field; s4, applying a seismic source normalization cross-correlation imaging condition to the separated wave field to obtain an attenuation compensation reverse time migration imaging result; and S5, setting a seismic wave excitation source and a signal receiving device for wave field data acquisition. The method provided by the invention can effectively improve the precision and resolution of seismic imaging in the viscous medium.

The application discloses a speech separation method, an electronic device, a storage medium and a computer program product, relates to the technical field of signal processing, and comprises the following steps: performing beamforming processing on a microphone array signal by taking a preset near-field speaker direction as a speech enhancement direction to obtain a first near-field speaker signal; performing beamforming processing on the microphone array signal by taking a preset far-field speaker direction as the speech enhancement direction to obtain a first far-field speaker signal; inputting the first near-field speaker signal as a main signal and the first far-field speaker signal as a reference signal into a preset near-field separation model for processing to obtain a second near-field speaker signal; and inputting the first far-field speaker signal as the main signal and the first near-field speaker signal as the reference signal into a preset far-field separation model for processing to obtain a second far-field speaker signal. The application reduces the consumption of computing resources of a speech separation algorithm by preliminarily separating near-field signals and far-field signals.

The invention discloses a water algae bloom control device for multi-channel cross flow field separation. The water algae bloom control device comprises a floating body platform, and an algae slurry circulating lifting mechanism and an algae slurry collecting and treating mechanism which are arranged on the floating body platform, the algae slurry circulation lifting mechanism is composed of a crawler belt assembly and a plurality of transverse flow separators which are evenly and fixedly arranged on a crawler belt of the crawler belt assembly at intervals, the crawler belt assembly is obliquely arranged on the floating body platform through a support, and each transverse flow separator is composed of a shell cylinder and a filter cylinder which are sleeved inside and outside; a door opening is formed in the side wall of a shell barrel, located on one side of the conveying direction of the crawler belt assembly, of each transverse flow separator, and a control mechanism used for controlling the cover plate to be opened and closed is arranged on the floating body platform. The crawler circulating lifting mechanism drives the transverse flow separators to circularly rotate to automatically take water, filter and drain water and discharge algae slurry at a fixed point, water does not need to be pumped by a water pump, the algae slurry is discharged according to the self weight, and the energy consumption of the equipment can be effectively reduced.

The invention relates to a mode field separation high-polarization semiconductor laser and application thereof, and aims to solve the problem of low polarization degree caused by stress of an existing laser. The laser comprises a main mode field region and a coupling region which are stacked along an epitaxial growth direction. The main mode field region is used for limiting and lasing a first polarization optical mode; the coupling region is made of a high-loss material and is used for absorbing and attenuating the second polarization optical mode. The two meet the following matching conditions: the effective refractive index of the second polarization optical mode of the coupling region is matched with the effective refractive index of the specific m-order second polarization optical mode of the main mode field region, so that the second polarization optical mode is optically coupled and expanded to the coupling region to be dissipated; the effective refractive index of the first polarization optical mode of the coupling region is mismatched with the effective refractive index of the specific m-order first polarization optical mode of the main mode field region, so that the coupling region is limited in the main mode field region for stable lasing. According to the invention, a polarization-related mode filtering mechanism is utilized, so that the polarization degree and the process robustness of the laser are remarkably improved.

The application discloses a dynamic magnetic hysteresis model of amorphous / nanocrystalline alloy core considering stress dependence and temperature dependence, separates the magnetic field inside the amorphous / nanocrystalline alloy core according to the loss separation thought, and obtains corresponding magnetic field intensity by differentiating eddy current loss and residual loss with respect to magnetic flux density on the basis of the relationship between field quantity and energy, the magnetic hysteresis loss and the eddy current loss considering the stress dependence and the temperature dependence, and the dynamic magnetization characteristics generated by the eddy current loss and the residual loss of the amorphous / nanocrystalline alloy core. The dynamic magnetic field intensity of the amorphous / nanocrystalline alloy core is divided into the sum of the magnetic field intensities corresponding to the hysteresis loss, the eddy current loss and the residual loss based on the field separation technology and the loss statistical theory, and the dynamic magnetic hysteresis model of the amorphous / nanocrystalline alloy core under the influence of stress and temperature is established.

This invention provides a method and system for three-dimensional high-frequency controllable source electromagnetic numerical simulation with dual-source excitation. The method constructs a single-source electromagnetic field grid model and a three-dimensional spatial domain total field equation, converting it into a quadratic field control equation by separating the primary and secondary fields. Fourier transform is used to transform the equations to the wavenumber domain, and shape function interpolation is performed iteratively to obtain the wavenumber domain numerical solution. A single-source forward excitation solution is obtained through inverse Fourier transform. A single-source reverse excitation solution is obtained by reversing the current direction. Finally, the forward and reverse solutions are vector-superimposed to obtain the dual-source excitation simulation result. This invention solves the technical problems of existing technologies, such as simulation distortion caused by neglecting displacement current in the 100kHz-10MHz frequency band, numerical calculation interference from field source singularities, and low spatial resolution of complex underground anomalies under single-source excitation. By simulating gradient field response characteristics through dual-source reverse superposition, the sensitivity and exploration resolution of underground target boundaries are significantly improved.

The invention discloses a method for preparing protein concentrate from high-denaturation oilseed meal, and belongs to the technical field of edible protein processing. The method comprises the following steps: crushing and screening to obtain meal powder with different protein contents by utilizing the distribution rule of proteins and structural carbohydrates in the microstructure of the high-denaturation oilseed meal and the physical property characteristics of components, and carrying out graded processing treatment according to the property difference of the meal powder; an air-electric field separation device is used for treating large-particle oilseed meal, high-fiber components which are difficult to remove in a traditional process are separated out, and high-protein components with solubility (NSI) similar to that of low-denaturation soybean meal and high gel property are obtained; proper concentration or alcoholase treatment is selected according to the protein content, denaturation degree and structural characteristics of the screening component, and a concentrated protein product meeting specific protein content requirements and / or functional characteristics can be obtained.

The application discloses a kind of low field intensity magnetic susceptibility weighted imaging optimization method and system, it is related to magnetic susceptibility weighted imaging field, comprising: obtaining the K space original data obtained by scanning target object;According to K space original data reconstruction image field data, extract the amplitude data and phase data of image field data;Phase data is preliminary unwrapping processing, and unwrapping phase data is obtained;Unwrapping phase data is separated from background field, and local phase diagram is obtained;Local phase diagram and amplitude data are operated based on complex domain phase separation high-pass filter, and high-frequency phase data is obtained;According to high-frequency phase data and amplitude data, the reconstruction of magnetic susceptibility weighted image is carried out, and the magnetic susceptibility weighted image of target object is obtained.The application can significantly reduce the phase artifact of SWI image, and improve the definition of image detail.

The invention relates to the field of flow field flow separation and discloses a high-temperature flow field flow separation system which comprises a constant-temperature box, a mobile phase module and a separation analysis module, the mobile phase module is used for storing and conveying a mobile phase, and the separation analysis module comprises a flow field separation unit and a detector connected with the flow field separation unit through a pipeline. The sample injector and the extension pipeline are connected with the flow field separation unit through a pipeline, the extension pipeline is used for connecting the mobile phase module and the separation analysis module, and the extension pipeline comprises a built-in pipeline; by arranging the constant-temperature box, a high polymer material can be dissolved, so that the high polymer material can be suitable for a field-flow separation system of a flow field, and by arranging a relatively long built-in pipeline, a mobile phase has sufficient time to be completely heated before being in contact with a sample; therefore, the mobile phase in contact with the sample does not cause sample crystallization due to sudden temperature drop of the sample.

The invention provides an extracellular vesicle surface specific marker modification method, which belongs to the field of disease marker modification, and comprises the following steps: adopting an ultracentrifugation method to separate and obtain extracellular vesicles; respectively determining the particle size distribution state, the number concentration state and the form integrity state of the extracellular vesicles by adopting a dynamic light scattering method, a nano particle tracking analysis method and a transmission electron microscope; respectively determining the surface charge state and the structural integrity state of the extracellular vesicle by adopting a surface potential analyzer and a Western Blot method; adding magnetic nanoparticles into the extracellular vesicle solution, and determining the binding efficiency state of the magnetic nanoparticles and the extracellular vesicles by adopting a magnetic resonance imaging method; carrying out separation by utilizing a magnetic field separation technology to obtain extracellular vesicles combined with the magnetic nanoparticles; the problem that the surface of an existing extracellular vesicle cannot be accurately modified can be solved.

The utility model discloses a gradient regulation type nanometer active silicon particle size synthesis reaction device, which relates to the technical field of nanometer active silicon particle size synthesis reaction devices and comprises an active silicon reaction kettle, a cavity is arranged in the active silicon reaction kettle, and an electric heating plate is sleeved in the cavity. The inner wall of the active silicon reaction kettle is fixedly connected with an ultrasonic assembly. According to the gradient regulation and control type nano active silicon particle size synthesis reaction device, through cooperative coupling of the electric heating plate and the ultrasonic assembly, the ultrasonic generator drives the multiple ultrasonic transducers which are symmetrically distributed to form a uniform cavitation field, and meanwhile the electric heating plate dynamically adjusts a temperature field based on a control panel instruction; space-time matching optimization of a temperature-cavitation dual-energy field is achieved, reaction nonuniformity caused by energy field separation of traditional equipment is effectively overcome, ultrasonic hot spots in the reaction kettle are eliminated through ultrasonic transducers which are arranged on a connecting rod in an axial symmetry mode, nano silicon particle nucleation growth kinetics are controllable, and the particle size standard deviation is reduced.

The invention discloses a high-speed rail seismic source seismic data wave field separation method and system using random Cadzow filtering, and belongs to the technical field of exploration geophysics. The method comprises the following steps: acquiring seismic data when a high-speed rail passes; estimating the seismic wave propagation speed through Radon transformation; performing time difference correction on the same-direction wave field event to obtain aligned data; blocking the aligned data and randomly rearranging the aligned data; fourier transform is carried out on the rearranged data, and a Hankel matrix is constructed; carrying out SVD (Singular Value Decomposition) decomposition and low-rank reconstruction on the Hankel matrix; reconstructing a frequency domain data block through an anti-Hankel operation; inverse Fourier transform is carried out, and a trace sequence is recovered; and extracting and averaging a central channel to obtain unidirectional wave field data. The system comprises modules with corresponding functions. The method can effectively separate the high-speed rail seismic source mixed wave field, improves the signal-to-noise ratio of data, and provides a reliable data basis for underground imaging.

The invention discloses a combined panchromatic and hyperspectral imaging lens shared by primary and secondary mirrors. The combined panchromatic and hyperspectral imaging lens comprises a primary and secondary mirror telescope group, a field-of-view separation mirror and a three-mirror aberration correction mirror group. The primary and secondary mirror telescope group is used for receiving target light and converging the target light to the vicinity of the field-of-view separation mirror. And the view field separation mirror is used for turning the light converged by the primary and secondary mirror telescope group and separating the light into a panchromatic view field and a hyperspectral view field. According to the invention, a front-end light-collecting telescope system is constructed by two R-C coaxial reflectors, and an off-axis three-reflector system is connected to correct aberration, so that the design of an imaging system with a large field of view and a small F number is realized; field-of-view separation is carried out on a turning light path near a rear focus of the coaxial primary and secondary mirrors, and respective off-axis three-mirror design is carried out on panchromatic channels and hyperspectral channels of different fields of view in sequence to realize multifunctional imaging; a plurality of turning mirrors are added in respective off-axis three-mirror systems of panchromatic and hyperspectral for optical path folding, so that compact design is realized, and the size of the system is reduced.

The invention discloses a method for multi-source data joint identification and inversion of a middle and lower earth crust high conductor, and relates to the technical field of geophysical exploration. The method for multi-source data joint identification and inversion of the middle and lower earth crust high conductor mainly comprises the following steps: carrying out potential field separation on Bouguer gravity anomaly data to obtain residual gravity anomaly, regional gravity anomaly and field source depth, and further determining earth crust residual gravity anomaly and middle and lower earth crust density disturbance characteristics; and calculating residual gravity low anomalies reflecting the middle and lower earth crust high conductors in the research area, delineating plane distribution of the middle and lower earth crust high conductors, and performing random sub-domain three-dimensional automatic inversion for the residual gravity low anomalies to obtain a three-dimensional space distribution form of the middle and lower earth crust high conductors. By implementing the multi-source data combined identification and inversion method for the mid-lower earth crust high conductor provided by the invention, the mid-lower earth crust high conductor can be rapidly and effectively identified and inverted, and the three-dimensional space distribution of the mid-lower earth crust high conductor can be obtained.

The invention provides an abrupt slope spillway overflow surface cavitation risk assessment method and system, and relates to the technical field of overflow surface cavitation risk assessment, and the method specifically comprises the steps: constructing a three-dimensional model, and carrying out the simulation to obtain the flow velocity, water pressure and cavitation number; calculating a Reynolds number, judging a flow state and determining a critical flow rate; the streamline curvature and vorticity are extracted, flow field separation is judged, and a risk correction coefficient is determined; clustering the initial high-risk grid units by adopting a recursive traversal method, and calculating a risk correction coefficient mean value of the region; and in combination with the cavitation number and the flow velocity, judging an initial risk level and assigning an interval, correcting to obtain a final risk level of each grid unit, and visually generating a cavitation risk point location distribution diagram of the high-risk area. According to the method, the divided high-risk region is clear in boundary and accurate in range, the actual distribution rule of the cavitation risk on the overflow surface is truly restored, the region cumulative effect of flow field separation is fused into a risk judgment system, and the cavitation effect that the risk of a continuous region is higher is met.

The invention relates to the field of seismic exploration, and discloses an earth medium sound wave scattering wave field holographic numerical simulation method and system and a storage medium, and the method comprises the steps: setting a time domain sound wave equation aiming at the characteristics of an earth medium; dividing the time domain acoustic wave equation into a background wave field equation and a scattered wave field equation based on velocity field separation and background field and scattered field separation; obtaining a time domain scattering wave field wave equation based on the scattering wave field equation; determining a spatial wave number mixed domain scattered wave equation set in the frequency domain based on the time domain scattered wave field wave equation; and calculating spatial domain scattering wave field distribution based on the spatial wave number mixed domain scattering wave equation set in the frequency domain as a holographic numerical simulation result of the earth medium sound wave scattering wave field. Therefore, the sound wave numerical simulation model is established according to the characteristics of the earth medium, and the consistency of the external boundary of the model and the real boundary condition is ensured, so that the accurate holographic numerical simulation of the earth medium sound wave scattering wave field is realized.

The invention discloses a tank-type direct drinking water filtering system, which relates to the field of direct drinking water filtering, and comprises a raw water tank, a pretreatment filter, a digital high-pressure pump, a nanofiltration membrane assembly, an ozone ultraviolet sterilization device, a digital water tank, a user direct drinking faucet, a return water filter and a return water adjusting mechanism arranged on a return water pipeline, a fluid dynamic pressure balance control center is integrated in the digital high-pressure pump, a fluid dynamic fingerprint spectrum is constructed by extracting characteristics representing the backwater and inflow game state from original pressure data of a pump inlet, the fluid dynamic fingerprint spectrum is decoded to quantify the physical invasion degree of backwater jet flow, and a backpressure retardation index is obtained. And performing control law optimization calculation on the backpressure retardation index, resolving a pump speed dynamic compensation vector and a backwater damping adjustment coefficient, and converting the pump speed dynamic compensation vector and the backwater damping adjustment coefficient into entity actions of fluid machinery, so that the risk of pipeline howling and flow field separation caused by a ghost water hammer is thoroughly eradicated.

The invention discloses a Bragg grating design method with a multi-mode wavelength selection function, and the method comprises the steps: determining target modes of two target wavelengths reflected by a Bragg grating to be set, namely a long wave LP01 mode of a first target wavelength and a short wave LP11 mode of a second target wavelength; determining a grating period corresponding to the target mode; reflection areas corresponding to the target modes of the two target wavelengths are arranged at different axial length positions of a grating fiber core; and designing radial refractive index distribution of reflection regions corresponding to the target modes of the two target wavelengths, so that mode field separation is realized in the target modes of the two target wavelengths. Through the method provided by the invention, the mode field Bragg grating capable of effectively separating the fundamental mode and the high-order mode can be designed.

The application provides a controllable source mixed wave field separation method, comprising the following steps: obtaining a Doppler effect correction operator and a deconvolution operator; based on the Doppler effect correction operator and the deconvolution operator, performing first separation processing on original data to obtain data domain signal data; a curved wave domain operator converts the data domain signal data to curved wave domain signal data; the sparse terms of the curved wave domain signal data are determined; based on the Doppler effect correction operator, the deconvolution operator and the curved wave domain operator, a function formula about the sparse terms of the curved wave domain signal data and the original data is constructed based on the curved wave domain; sparse inversion is performed on the target function, the sparse terms of the original data are used, and based on the Doppler effect correction operator and the deconvolution operator, second separation processing is performed on the original data to obtain mixed wave field separation data. The controllable source mixed wave field separation method simultaneously realizes Doppler moveout correction and deconvolution, and ensures the separation effect of the controllable source mixed wave field.

The invention provides a construction method and system of an enhanced boundary layer shielding function. The method comprises the steps of initializing a shielding coefficient of a DDES model to be a first preset value; solving a preset typical model by using a DDES model to obtain a first flow field separation distance; comparing the first flow field separation distance with an experimental flow field separation distance to obtain a separation area distance difference, and adjusting a shielding coefficient of a DDES model based on the separation area distance difference to obtain a final shielding coefficient; and taking the final shielding coefficient as a shielding coefficient of a DDES model to complete construction of an enhanced boundary layer shielding function for complex flow DDES simulation. According to the technical scheme provided by the invention, accurate simulation of complex flow disturbed by the shock wave boundary layer can be realized, and induced separation is reduced.

The invention provides a model training method, a VSP wave field separation method, a VSP wave field separation device and a medium, and relates to the field of oil-gas exploration. The method comprises the following steps: obtaining VSP sample data, constructing a first depth sparse self-encoding network, obtaining gradient features presented by different wave fields represented by the VSP sample data, carrying out wave field separation on the VSP sample data according to the gradient features to obtain different wave fields corresponding to a second depth sparse self-encoding network and the VSP sample data, and obtaining reconstructed VSP data according to the different wave fields. And calculating reconstruction loss, gradient loss and sparse penalty term loss, and further inputting the loss into a second deep sparse self-encoding network for iterative updating to obtain a trained deep sparse self-encoding network. According to the method, gradient features presented by different wave fields are utilized, a deep sparse self-encoding network is taken as a basis, the deep learning network which is suitable for VSP wave field separation and is high in practicability is obtained by adopting unsupervised model training, and high-precision VSP wave field separation is realized.

The application relates to a one-rocket multi-satellite layout method and system based on separation safety design, which comprises the following steps: obtaining an in-orbit attitude deviation at a satellite-rocket separation time, setting an initial separation state; setting mass center coordinates of M groups of satellites relative to a rocket body and separation energy of each satellite in the initial separation state, and completing population initialization; establishing a fitness function by taking the minimum far-field distance of two satellites within half a period to five periods after separation and the total attitude angular velocity of each satellite after separation as optimization indexes; calculating a fitness function value of each particle; updating individual extreme values and global extreme values; updating particle speed and particle position; and outputting one-rocket multi-satellite layout optimization results when a preset ending condition is met. The application solves the layout problem caused by coupling of structure layout and far-field separation with the increase of the number of separation bodies in one-rocket multi-satellite tasks, and provides guidance for structure layout by considering far-field safety in the initial structure layout, so that the structure overall design efficiency is improved.

The application provides a momentum wheel rotating speed information-based interference magnetic field separation method, and relates to the technical field of high-precision magnetic field detection signal processing. The method comprises the following steps: installing two magnetometers on extension rods with different lengths from a spacecraft platform; establishing a satellite coordinate system, and positioning the position information of a plurality of momentum wheels and the two magnetometers based on the satellite coordinate system. An analytical method is used to model the magnetic dipole of each momentum wheel. Based on the real-time rotating speed information of the momentum wheel, the characteristic waveform of the interference magnetic field signal of the momentum wheel is reconstructed, the differential signal of the inner and outer magnetometers is calculated, and the independent components are analyzed from the mixed signal in combination with constraint optimization, so that the momentum wheel components and their coupling contributions in the magnetic field are reconstructed, and the accurate stripping of the momentum wheel interference signal in the on-board magnetic field data is realized. The method does not require additional sensors or frequency domain filtering processing, and is suitable for high-precision magnetic field measurement tasks on spacecraft platforms such as satellites and space stations.

The present application relates to a kind of spacecraft interstage separation design evaluation method, electronic equipment and storage medium, comprising the following steps: step S10, utilize the kinetic model to calculate output parameter, whether there is near-field separation safety risk according to output parameter, if there is no near-field separation safety risk, then carry out far-field separation safety analysis;Step S20, utilize spacecraft two-stage orbit model, calculate the relative distance after two-stage separation, judge whether there is collision risk.The present application effectively avoids the problem that variable is not identified sufficiently when independent analysis occurs, not only can the spacecraft separation safety under specific conditions be evaluated, but also the input parameter feasible solution without separation safety risk can be obtained by iterative calculation, and the separation design characteristic parameter is optimized in feasible solution, correct design data envelope line is obtained, which can effectively guide spacecraft optimization design work.

The application provides an anode segmented visual proton exchange membrane electrolytic cell, which comprises an anode end plate, a sealing cover plate, a flow field separation plate, an anode segmented flow field plate, a five-in-one membrane electrode layer, a cathode bipolar plate, a stainless steel plate, an insulating gasket and a cathode end plate which are sequentially stacked. The sealing cover plate and the flow field separation plate are both transparent polycarbonate plates, the anode segmented flow field plate is composed of eight independent titanium flow field plates with anode tabs, the five-in-one membrane electrode layer is composed of eight independent membrane electrodes and a polyethylene terephthalate film, and the cathode bipolar plate is provided with eight independent flow channels on the surface, four groups of holes on each of the two side faces for inserting thermocouple probes and heating rods and four cathode tabs. The application can monitor and measure local parameters such as current, voltage and temperature, and can accurately control the temperature of reaction water; in addition, the sealing cover plate and the flow field separation plate are both made of transparent materials, which provides conditions for observing the flow pattern of the two-phase flow of the anode and analyzing the influence of the flow pattern on the performance of the electrolytic cell.

The present application discloses a method for separating the physical field of multimodal fluctuations, which relates to the field of ship and ocean engineering technology. The method comprises: obtaining physical field time series data of the multimodal fluctuations in a geodetic coordinate system, then extracting the propagation velocity of each mode of the multimodal fluctuations through a physical quantity time cloud diagram, and finally establishing a plurality of satellite coordinate systems, wherein the movement velocity of each satellite coordinate system in a target direction corresponds to the propagation velocity of a mode of the multimodal fluctuations, and numerically averaging the physical quantities of each point in each satellite coordinate system so as to separate the physical field data of each mode of the multimodal fluctuations. In addition, the multimodal fluctuation physical field data with a smaller field of view in the geodetic coordinate system is reconstructed in the satellite coordinate system to obtain a large-scale fluctuation velocity field, thereby facilitating accurate research on the fluctuation characteristics of the multimodal fluctuations, and improving the accuracy of multi-physical field detection. The method is of great significance for the application of multi-physical field feature detection and tracking technology for wakes of navigation bodies.