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89results about How to "Explanation of validity" patented technology

Quantum universal gravitation searching dynamic DOA estimation method under impulsive noise environment

InactiveCN103901394ASolve the problem of dynamic target direction trackingImprove robustnessDirection findersEstimation methodsCovariance
The invention relates to a quantum universal gravitation searching dynamic DOA estimation method under an impulsive noise environment. The quantum universal gravitation searching dynamic DOA estimation method is implemented together through a quantum universal gravitation searching mechanism and dynamic updating of a weighted signal covariance maximum likelihood equation, wherein the fact that robust tracking is conducted on the direction of arrival of a dynamic target is considered. The method comprises the steps that snapshot sampling and weighted processing are conducted on D source signals of space; the initial sates of all objects of the quantum universal gravitation searching mechanism are determined; a best objective function value and a worst objective function value are determined; the weight of each object in a tth iteration is calculated; an objective function value is calculated, whether the biggest number of iteration times is reached or not is judged; weighted processing is conducted on sampled data; the maximum tracking times are judged; a dynamic tracking result is output. The quantum universal gravitation searching dynamic DOA estimation method under the impulsive noise environment solves the problem of dynamic objective direction tracking under the impulsive noise environment, the designed quantum universal gravitation searching mechanism is used as a searching strategy, and the designed method has the advantages of being quick and high in robustness.
Owner:HARBIN ENG UNIV

Method for testing RCS (radar cross section) of low-scattering conformal antenna based on two-dimensional microwave imaging

The invention relates to a method for testing an RCS (radar cross section) of a low-scattering conformal antenna based on two-dimensional microwave imaging, which is characterized by comprising the following steps: carrying out an RCS test on a metal envelope and a low-scattering conformal antenna in an installed state so as to obtain a two-dimensional microwave image; carrying out two-dimensional Fourier transform on the obtained new two-dimensional microwave image so as to obtain the data of a target spectral domain; carrying out an RCS test on a metal ball (the RCS of the metal ball is known) so as to obtain a two-dimensional microwave image, then carrying out two-dimensional Fourier transform on the obtained two-dimensional microwave image so as to obtain the data G0 (f, theta) of a scattered field of the metal ball, wherein the data of the scattered field varies with frequency and angle; and finally, obtaining the RCS of the conformal antenna, wherein the RCS of the conformal antenna meets the following formula: RCS= G1 (f, theta) (of the conformal antenna) - G0 (f, theta) (of the metal ball) + RCS (of the metal ball). The method provided by the invention is a method for testing an RCS (radar cross section) of a low-scattering conformal antenna in an installed state based on the two-dimensional microwave imaging technology, and after practicing, the obtained effect is good, therefore, the method provided by the invention has great engineering popularization value.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Multi-target spectrum allocation method based on undisposal order preference quantum goose group algorithm

InactiveCN102316464ASolving discrete multi-objective optimization problemsFast convergenceNetwork planningFrequency spectrumEvolution rule
The invention aims at providing a multi-target spectrum allocation method based on an undisposal order preference quantum goose group algorithm, which comprises the following steps of: building a graph theory coloring model of cognitive radio spectrum allocation, initializing the position of the quantum geese and the quantum speed, carrying out the undisposal order preference and congestion degree calculation on individuals in the population according to the adaptability, sequencing the individuals with the same undisposal order preference levels in sequence from higher congestion degrees to lower congestion degrees, carrying out evolution on the population by a quantum goose group evolution rule, generating new quantum speed and position, carrying out undisposal order preference on obtained solutions in an elite solution set nonDomQGSAList and selecting the solutions with the undisposal solution level being 1 as the final Pareto front end solution set. The method solves the discrete multi-target optimization problem, designs the novel undisposal order preference quantum goose group algorithm as the evolution strategy and has the advantages that the convergence speed is high, and the precision is high. In addition, the method provided by the invention has a wider application range.
Owner:三亚哈尔滨工程大学南海创新发展基地

UAV group task allocation method based on quantum crow group search mechanism

The invention relates to a UAV group task allocation method based on a quantum crow group search mechanism. The UAV group task allocation method comprises the steps of: establishing a UAV group task allocation model from a plurality of start points to a plurality of tasks, wherein the UAV group task allocation model comprises UAV model numbers, start and end points, and an allocation model; initializing a quantum crow group; calculating the fitness of each quantum crow according to a fitness function, and storing a position of the quantum crow corresponding to the minimum value of the fitnessfunction as a globally optimal food position; updating a quantum position and the position of each quantum crow; and calculating the fitness of each quantum crow according to a fitness function, determining a hidden food position of each quantum crow, finding the optimal food position so far, outputting the globally optimal food position if the maximum iteration algebra is reached, and mapping themaximum iteration algebra into a task allocation matrix. The UAV group task allocation method solves the discrete multi-constrained objective function solving problem, designs a discrete quantum crowalgorithm as an evolution strategy, and has the advantages of fast convergence speed and high convergence precision.
Owner:HARBIN ENG UNIV

Planar antenna array sparse method based on quantum spider population evolution mechanism

ActiveCN107302140ASolving sparse problems with discrete variablesImprove the theory of evolution mechanismAntenna arraysArtificial lifeSparse methodsPlanar antenna array
The invention provides a planar antenna array sparse method based on a quantum spider population evolution mechanism. The planar antenna array sparse method comprises the steps of 1, establishing a planar antenna array sparse model; 2, setting system parameters; 3, performing evaluation on advantages and disadvantages of each spider coding position in a population by a fitness function, and taking the optimal position of the fitness function as the global optimal position of the whole population; 4, dividing genders of spiders in the population; 5, calculating weight of each spider; 6, updating quantum positions of female spiders by adopting an analog quantum vector rotation door rotation based on the updated quantum vector rotary angle; 7, updating quantum positions of male spiders by adopting an analog quantum vector rotation door rotation based on the updated quantum vector rotary angle; 8, updating the respective historical optimal positions; and 9, judging whether the maximum number of iterations is reached or not. By adoption of the planar antenna array sparse method, the difficulty existing in multi-constraint planar array antenna sparsity is solved, and various requirements on the planar sparse array are satisfied.
Owner:HARBIN ENG UNIV

Loop antenna array spare method based on multi-objective quantum spider population evolution mechanism

ActiveCN107944133AOvercome the shortcoming of easy to fall into local extremumSolve high-dimensional multi-objective discrete problem solving puzzlesArtificial lifeMulti-objective optimisationPopulation evolutionMetapopulation
The invention provides a loop antenna array spare method based on a multi-objective quantum spider population evolution mechanism. The method comprises the following steps that: establishing a loop antenna array spare model, setting a proper system parameter, and initializing the quantum position and the [0,1] coding position of each spider in a population in a solution space; designing a multi-objective fitness function; calculating the weight of each spider in the population, and dividing the gender of the spiders according to the weight; according to the initial population, generating an initial elite solution set; selecting a global optimal solution and a suboptimum solution from the elite solution set; then, independently updating the quantum positions of the female spider and the male spider, and converting the quantum position into the [0,1] coding position through a measurement way; updating the elite solution set, and updating the weights of all spiders in the population; finally, judging whether a maximum iteration number is achieved or not is judged, and outputting the elite solution set if the maximum iteration number is achieved; and otherwise, returning to carry out iteration. By use of the method, a problem that high-dimension discrete multi-objectives are subjected to spare construction by a multi-objective loop antenna array is solved.
Owner:HARBIN ENG UNIV

Case public opinion abstract generation method based on case element sentence association graph convolution

ActiveCN111339754ASolve how to incorporate domain knowledgeSolve the problem of cross-document sentence association relationshipNatural language data processingNeural architecturesTheoretical computer scienceEngineering
The invention relates to a case public opinion abstract generation method based on case element sentence association graph convolution, and belongs to the technical field of natural language processing. According to the method, case elements and words are fused to construct a sentence association graph based on the case elements to represent an association relationship between sentence informationand sentences; an association relationship between sentence information and sentences is learned by using a graph convolutional neural network, and the sentences are classified to obtain an importance score of each sentence; sentences are sorted according to importance, and abstracts are obtained through duplication elimination and sequential relation adjustment. According to the invention, important information is obtained from a plurality of news texts related to a specific case and is used as a brief abstract of the news texts. The method plays an important role in quickly mastering the public opinion situation by related personnel, and solves the problem of how to integrate domain knowledge and cross-document sentence association relationships for case public opinion abstracts.
Owner:KUNMING UNIV OF SCI & TECH

CEEMD-improved wavelet threshold denoising-based transformer winding ultrasonic detection three-dimensional imaging method

The invention relates to a CEEMD-improved wavelet threshold denoising-based transformer winding ultrasonic detection three-dimensional imaging method, and belongs to a transformer winding deformationdetection method. The method comprises the following steps: firstly, performing CEEMD decomposition on a target signal to obtain a multi-order IMF component, then calculating a correlation coefficientof the IMF component, performing improved wavelet threshold processing on a high-frequency component with a relatively low correlation coefficient, and finally reconstructing a denoised component, alow-frequency component and a residual component to obtain a denoised signal. According to the method, most noise is suppressed while low-amplitude effective information and high-frequency effective information are reserved, and the denoising effect is ideal. In an ultrasonic detection three-dimensional imaging system, the denoised transformer winding state diagram is better in visual effect and clearer in fault position, and it is shown that the transformer winding state diagram denoising method has a good denoising effect.
Owner:JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD +2

Multi-target frequency spectrum allocation method based on quantum flower pollination search mechanism in cognitive heterogeneous network

ActiveCN106658524AIncrease Spectrum EfficiencySolve the multi-objective spectrum allocation problemNetwork planningFrequency spectrumSelf-pollination
The invention relates to a multi-target frequency spectrum allocation method based on a quantum flower pollination search mechanism in a cognitive heterogeneous network, and the method is realized based on a multi-target quantum flower pollination search mechanism. The method comprises the steps that the wireless access network perception module in a base station perceives network information; (2) a network reconstruction management module performs multi-granularity channel division on the frequency spectrum resource; (3) a quantum pollen set including P quantum pollens is initialized; (4) each individual pollen in the pollen set is mapped as a frequency spectrum allocation matrix to be corrected; (5) the transformation probability of cross-pollination and self-pollination in the quantum flower pollination search mechanism is set; (6) the new generation of pollen set and the previous generation of pollen set are mixed; (7) the appropriate pollens are selected from Pareto front-end solutions and mapped as the frequency spectrum allocation matrix; and (8) the network reconstruction management module partitions the optimal allocation matrix. The problem of multi-target frequency spectrum allocation can be solved so as to enhance the utilization rate of the frequency spectrum.
Owner:HARBIN ENG UNIV

Dynamic frequency spectrum distribution method of cognitive heterogeneous network

ActiveCN104168569AImprove adaptabilitySolving the optimization problem of discrete multi-constrained spectrum allocation parametersNetwork planningHarmony memoryDistribution matrix
The invention relates to a dynamic frequency spectrum distribution method of a cognitive heterogeneous network. A probability HMCR carrying out selection from a quantum harmony set is set and a quantum-harmony-based dynamic frequency spectrum method is initialized; a quantum tone of each quantum harmony is measured to obtain a harmony base x and a harmony memory base H, and fitness calculation is carried out on each harmony and the corresponding fitness values are respectively stored in a Fit and a Fit 1; if rand is less than HMCR, the quantum tone of the last-generation quantum harmony is inherited and a quantum rotating gate is started to generate a new solution; if the rand is larger than the HMCR, a tent pseudo chaos sequence is generated randomly to generate a new quantum harmony; the quantum tone of each quantum harmony is measured successively to obtain a corresponding harmony, and fitness calculation is carried out to replace the corresponding fitness value in the Fit 1; and a global optimum harmony in the harmony memory base H is outputted in a loop iteration mode and global optimum harmony mapping is carried out to obtain a frequency spectrum distribution matrix A that is the optimum frequency spectrum distribution scheme of the cognitive heterogeneous network.
Owner:HARBIN ENG UNIV

Satellite remote sensing image color equalization method based on block adjustment

The invention relates to a satellite remote sensing image color equalization method based on block adjustment. The method comprises steps of S1, extracting an image overlapping region according to thespatial position of an image, dividing the image overlapping region into uniform grids, extracting grid features through employing an HOG feature extraction algorithm, and carrying out the optimization screening of grids with the same name through employing the grid features; S2, taking a polynomial as an adjustment model, introducing a reference image for a coefficient array rank depletion problem, introducing virtual control for a pixel value distribution nonuniformity problem, constraining a difficult region with weak connection by adopting an integral gray average value of an overlappingregion, and carrying out integral solution of an introduced weight on color conversion parameters of each image in a measurement region; and S3, performing color correction on each image by utilizingthe color transformation parameters obtained in the S2 to obtain a color-balanced image sequence. Compared with the prior art, the method is advantaged in that brightness and color difference betweenadjacent images can be effectively processed, so color transition in the whole measurement area is natural, and a better effect is achieved.
Owner:TONGJI UNIV

Dual-jump full-duplex DF relay system optimization power distribution method for total power limitation

The invention discloses a dual-jump full-duplex DF relay system optimization power distribution method for total power limitation, and relates to the technical field of wireless transmission. The dual-jump full-duplex DF relay system optimization power distribution method solves the problem that the total power of a dual-jump full-duplex DF relay system is limited. The method comprises the steps that the end-to-end outage probability Po (gamma th) is solved; when the total transmitted power limitation of nodes is Ptotal, a dual-jump full-duplex DF relay optimization power distribution strategy is equivalent to nonlinear optimization; according to the process of optimization power distribution, a cost function J (Po, P1, gamma) is set, the gamma is an intermediate parameter, the gradient of the cost function J (Po, P1, gamma) is obtained, an iteration precision threshold value epsilon is set, initialization is carried out on the Po and the P1 by utilizing equal power distribution, and when the equations that |Po-Po*|<epsilon, Po=Po* and P1=Ptotal-Po* are met, a dual-jump full-duplex DF relay optimization power distribution result for the total power limitation is obtained. The dual-jump full-duplex DF relay system optimization power distribution method is suitable for optimization power distribution of the dual-jump full-duplex DF relay system, so that the end-to-end outage performance of the system achieves the optimization.
Owner:HARBIN INST OF TECH

Tooth profile deviation measurement method based on DP-PSO-SVR

The invention discloses a tooth profile deviation measurement method based on DP-PSO-SVR, and belongs to the technical field of precision testing. The invention helps resolve problems of high measurement cost, low precision and short service life. The method comprises the following steps: measuring tooth profile data of a to-be-measured gear as to-be-measured data, measuring tooth profile data ofa test gear as sample data, and carrying out coordinate transformation processing on theoretical tooth profile data of the to-be-measured gear; establishing a tooth profile deviation mathematical model; establishing an SVR model; optimizing and training parameters in the SVR model by using a DP-PSO algorithm and the sample data to obtain a DP-PSO-SVR model; fitting the to-be-measured data by usingthe DP-PSO-SVR model to obtain an actual involute of the to-be-measured gear, fitting theoretical tooth profile data by using a least square method to obtain a theoretical involute, and calculating to obtain a tooth profile deviation between the actual involute and the theoretical involute through the tooth profile deviation mathematical model. According to the invention, the measurement cost canbe reduced, the measurement precision can be improved, and the anti-interference performance is good.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
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