133results about How to "Achieve enhancement" patented technology

A BeiDou short message communication-based electric power data acquisition transmission processing system provided by the present invention comprises a plurality of electricity meters, a concentrator, a concentrator-side BeiDou communication terminal, a master station-side BeiDou communication terminal and a master station, wherein the electricity meters acquire the electric power data information; the concentrator is connected with the plurality of electricity meters, can package the electric power data information sent from the electricity meters into the data messages of a 376.1 protocol, and sends the messages to the concentrator-side BeiDou communication terminal; the concentrator-side BeiDou communication terminal analyzes, processes and packages the received data messages of the 376.1 protocol into the BeiDou short messages, and then sends to the master station-side BeiDou communication terminal via a transmission channel of a BeiDou satellite; the master station-side BeiDou communication terminal is connected with the concentrator-side BeiDou communication terminal via a BeiDou communication channel, receives the above BeiDou short messages, analyzes, processes and packages the BeiDou short messages into the data messages of the 376.1 protocol, and sends to the master station; the master station is connected with the master station-side BeiDou communication terminal, analyzes the received data messages, and stores, analyzes and displays the analyzed electric power data.

The invention discloses a modified polyurethane sealing gum and making method of nanometer organic montmorillonite silane group organosilicon at modifying end, which comprises the following parts: 100wt% organosilicon modified polyether typed polyurethane of end silane, 5-20wt% nanometer organic montmorillonite, 5-150wt% mineral filler and 0.2-1.5wt% catalyst. The invention realizes the reinforcing and toughening effect of end silane polyurethane seal gum simultaneously due to the boundary interaction between nanometer organic montmorillonite and polymer base, which improves the stretching strength and fracture extensibility more than the formulation without montmorillonite.

The invention discloses an image de-spin and stabilization method based on subarea matching and an affine model, which comprises the steps that 1, a reference frame and a current frame are subjected to image histogram equalization processing; 2, four areas distributed crosswise and an image center area are selected as matching areas of motion estimation; 3, an affine transformation model is established, and a current frame motion vector is solved; and 4, a kalman filter model is established, and motion compensation of a current frame displacement vector is achieved. In Step 2, the operand is less; a speed is high; the motion estimation capacity is favorable when translation and rotation motion coexist in an image; and an interframe estimated error is less than one pixel. According to the method, the random motion quantity of a video image can be removed with high precision; scanning motion inherent in a platform or a load is kept; and the smoothness of a dynamic image sequence is improved. The method can effectively improve the video image and inhibit random noise.

A license plate character partitioning method based on a quick region labeling algorithm and a license plate master space location method belongs to the image processing technical field and relates to a license plate automatic recognition technique. Firstly the license plate region is converted through grey level histogram and grey level stretching conversion to realize reinforcement of the character region on the license plate; secondly a two-valued threshold value is calculated and the license plate grey level image is converted into a two-valued image; thirdly a connectivity analysis of the license plate two-valued image is carried out according to the quick region labeling algorithm and an alternate region of characters is obtain through a region growing method; fourthly a master space location is fixed from the license plate two-valued image; fifthly the final character region is obtained through mending and making up for the character region based on the feature of the license plate master space location; finally the characters are partitioned from the license plate grey level image. The license plate character partitioning method based on the quick region labeling algorithm and the license plate master space location method provided by the invention can effectively improve performances such as systematic versatility and location accuracy.

The invention discloses an auditory perception property-based signal subspace microphone array voice enhancement method, which fully combines auditory masking effect of human ears based on the traditional microphone array signal subspace voice enhancement method. The algorithm core of the signal subspace is to reasonably estimate a linear filter, and the key point of the algorithm comprises the following steps: accurately estimating the dimensionality and noise power spectrum of the signal subspace, and reasonably estimating a Lagrangian multiplier. Therefore, the invention provides a feasible solution, which comprises the following steps: performing time domain alignment, short-time Fourier transform and power spectrum characteristic value decomposition on signals acquired by a microphone array; determining the dimensionality of a noise subspace by hypothesis testing; estimating a noise power spectrum by a conditional probability method in the noise subspace; estimating an auditory masking threshold value based on the signal subspace; and estimating the linear filter by combining the Lagrangian multiplier according to the auditory perception property.

The present invention provides a method and device of HARQ (Hybrid Automatic Repeat Request) on a license-free carrier in an LTE-LAA system. The implementation method in a base station comprises that: when the base station and user equipment work on the license-free carrier, the base station and the user equipment are configured to perform CCA (Clear Channel Assessment) detection for the license-free carrier to determine the energy on the license-free carrier, and at the same time an HARQ discard timer aiming at the license-free carrier is started; the determined energy is compared with a preset CCA threshold value; if the energy on the license-free carrier is not less than the energy of the CCA threshold value until the HARQ discard timer is time out, the HARQ is not carried out on the license-free carrier; if the energy on the license-free carrier is lower than the energy of the CCA threshold value prior to the timeout of the HARQ discard timer, the HARQ is continually carried out on the license-free carrier.

The invention discloses a specific composite papermaking filling. The specific composite papermaking filling is a compound with a core-shell structure, wherein powder is taken as a core of the compound with the core-shell structure, a coating membrane which is grafted with the powder and contains acrylamide copolymers is taken as a shell layer of the compound with the core-shell structure, and the powder is spherical, sheet-shaped, staple fiber-shaped, needle-shaped or irregular inorganic powder; and the coating membrane shell layer containing the acrylamide copolymers is formed by copolymerization of monomers (a), (b) and (c). According to the specific composite papermaking filling with the core-shell structure, except a non-desorption function, a polymer membrane at the surface of the shell layer further has hydrophily and cationic performance, so that the paper can be strengthened and toughened when the web end retention rate is maintained or even improved in a paper filling process; besides, the characteristics of the specific composite papermaking filling can be adequately utilized, and particularly the specific composite papermaking filling can be used as the special filling for paper.

The invention provides fingerprint recognition pretreatment method and device. The method comprises the following steps that: fingerprint images with little information content and compactness in high frequency images as wavelet basis are selected; wavelet transformation is carried out on the collected fingerprint images to obtain low-frequency images, because pixel points of the low-frequency images and the high-frequency images are in one-to-one correspondence, the low-frequency images reserve ridge directions and frequency information of original fingerprint images, and the direction of each pixel obtained through high-frequency estimation can be used as the ridge directions of pixels corresponding to the high-frequency images. Thereby, the invention only considers the information of the low-frequency images to estimate the pixel direction, effectively inhibits the influence of high-frequency noise on fingerprint image quality, realizes the strengthening of the fingerprint images and improves the quality of the fingerprint images, thus improving the fingerprint recognition accuracy and the recognition speed, meeting more practical application requirements of the fingerprint recognition and widening the application range of the fingerprint recognition.

The invention relates to an optical element damage detecting device and method based on polarization imaging. The optical element damage detecting device comprises a light source as well as a light beam expanding system, a linear polarizer, a detected optical element, an imaging system, a CCD detector and a processing computer which are arranged sequentially along the light source, wherein the detected optical element and the CCD detector are located on an object plane and an image plane of the imaging system respectively, and an output end of the CCD detector is connected with an input end of the processing computer. According to the optical element damage detecting device and method based on polarization imaging, linearly polarized light is used for illuminating the optical element, the polarization CCD detector receives scattered light S and direct transmission light T of a damage point of the optical element, mutually orthogonal linear polarization images are obtained, the direct transmission light is filtered out by means of the difference of the orthogonal linear polarization images, images of the damage point of the optical element are enhanced, and the measurement problem that the optical element image detecting method cannot give consideration to image resolution, edge location accuracy, large-sized damage information and the like simultaneously is solved.

The invention discloses a color eye ground image enhancement method based on an imaging model. The method can improve brightness and low contrast at the same time, and realize image data fidelity, and can effectively enhance the region of interest of clinical diagnosis; and comprises the steps of preprocessing the brightness; extracting foreground pixels and background pixels in a color eye ground image: estimating imaging model parameter-background brightness and an imaging model parameter-transmission coefficient; and finally performing image enhancement according to the imaging model: substituting the background brightness and the transmission coefficient into the imaging model for calculation to obtain an enhanced image.

The invention provides a feeble respiration signal detection method used for life detection radar. The feeble respiration signal detection method comprises the following steps: establishing an M*N-dimensional distance slow time signal matrix S(m,n) by a radar echo signal; for each distance unit, performing autocorrelation processing on the slow time direction of the S(m,n) to obtain a signal matrix Rx(m,tau); performing FFT (fast Fourier transform) on each row vector of the Rx(m,tau) to obtain a distance frequency matrix mean-Rx(m,f); performing weighted accumulation on the distance direction of the mean-Rx(m,f) to obtain the frequency spectrum mean-Vw(f) of a respiration signal, and traversing each position of the mean-Vw(f) so as to seeking positions of which the energy ratio is greater than a preset threshold; if the number of the positions if greater than 0, judging that a lift body exists underground. According to the feeble respiration signal detection method provided by the invention, the enhancement, the detection and the extraction of the feeble respiration signal are realized, and the requirement of feeble life feature detection on buried personnel under the disaster assistance occasion and the like is met.

The invention relates to a preparation method of an electrochemical luminous biosensor for enhancing a luminol system, and belongs to the field of biosensor preparation. The method comprises the following steps of (1) determining a target miRNA to be detected; designing the DNA (deoxyribonucleic acid) probe sequence according to the condition that the sequence follows the base complementation principle; (2) by an electrochemical cycling voltammetry, electrically depositing gold nanoparticles on the glassy carbon electrode surface; connecting the designed DNA probe (5' end modified hydrosulphonyl) onto the gold nanoparticles through gold sulfur bonds; (3) sealing non-specificity binding sites on the electrode surface by glucose oxidase; (4) performing reaction on the target miRNA and the sealed electrode; after hybridization with the DNA probe, forming a double-chain compound; (5) dropwise adding on the hybridized electrode. The substance is only embedded between the miRNA-DNA double chains; the hydrogen peroxide decomposition can be effectively accelerated; superoxide anions are generated; the electrochemical luminescence enhancement is essentially realized from the mechanism aspect. The preparation method solves the problems of weak luminescent signals of the luminol system and low detection sensitivity of the biosensor.

The invention relates to a balancing shaft for a single- or multi-cylinder motor having at least one unbalanced weight section (21, 22; 23, 24) and at least one bearing point (16, 17), wherein the at least one unbalanced weight section (21, 22; 23, 24) is allocated to the bearing point (16, 17) and the bearing point has a radial contact surface (18) that extends only partially over a circumference of the bearing point (16, 17) and a centrifugal force resulting from the rotation of the balancing shaft (11) lies inside a region of the bearing point (16, 17) formed by the contact surface (18) extending partially over the circumference of the bearing point (16, 17), wherein at least one support surface (51) is provided that is provided partially over the circumference of the bearing point (16, 17) and separately from the contact surface (18).

The invention discloses a preparing method of a reinforced gold nanoparticle cluster fluorescence system based on surface plasma. The preparing method comprises the steps of conducting contact reaction of gold nanoparticle solution and modified gold nanorod solution with buffer solution to prepare the reinforced gold nanoparticle cluster fluorescence system based on surface plasma; among them, modified gold nanorod in the gold nanorod solution comprises gold nanorod, a silicon dioxide layer and an amine modified layer, wherein the silicon dioxide layer is covered outside the gold nanorod, and the amine modified layer is distributed on the outer surface of the silicon dioxide layer; the outer protecting group of the gold nanoparticle in the gold nanoparticle solution is chosen from one kind or multiple kinds of BSA (Bovine Serum Albumin), HAS (human serum albumin) and glutathione. The gold nanoparticle cluster fluorescence system prepared from the method has excellent fluorescence quantum yield.

The invention discloses a reinforcing and toughening PVC pipe and a preparation method thereof. The PVC pipe is prepared from the following raw materials in parts by weight: 190-200 parts of PVC resin, 8-10 parts of active light calcium carbonate, 5-7 parts of cubic boron nitride micropowder, 3-4 parts of calcium stearate, 10-14 parts of 2.5-bis(5-tertbutyl-2-benzoxazlyl) phiophen, 1-3 parts of an antioxidant DLTP, 0.7-1 parts of a current-based organic tin stabilizer, 6-8 parts of nitrile rubber, 3-5 parts of oxidized polyethlene wax, 4-6 parts of microcrystalline wax, 2-3 parts of carbon black, 6-9 parts of zinc borate, 2-8 parts of acrylic ester, 2-3 parts of alkylpolyamine ethoxylate, 5-6 parts of dibasic lead phosphate and 8-10 parts of auxiliaries. The PVC pipe disclosed by the invention realizes reinforcing and toughening, and has excellent heat resistance, weather resistance, light resistance, ageing resistance, tensile strength and impact strength, the service life of the PVC pipe is prolonged, and the additional value and the application range of the PVC pipe are increased and expanded.

The invention provides a fiber composite material high-pressure hydrogen storage cylinder and a preparation method thereof. The preparation method comprises the steps that S100, a cylinder inner container is provided, and the cylinder inner container comprises an inner container body and a cylinder opening; S200, fiber yarns are adopted to conduct two-dimensional multi-spindle weaving on the outer surface of the cylinder inner container, so that a composite material weaving layer comprising multiple layers of fiber two-dimensional fabric is formed, the weaving angle of the fiber two-dimensional fabric at the position of the inner container body is 56-67 degrees, and the weaving angle of the fiber two-dimensional fabric at the position of the cylinder opening is 15-55 degrees; S300, in the composite material weaving layer, a sewing thread in the axis direction of the cylinder is additionally arranged between every 3-5 layers of adjacent fiber two-dimensional fabric for fixing, and a woven preformed body is obtained; and S400, resin is adopted to cure the woven preformed body through a vacuum bag vacuum resin infusion method, and the fiber composite material high-pressure hydrogen storage cylinder with the fiber composite material layer is obtained. The fiber composite material high-pressure hydrogen storage cylinder is light in weight, high in strength, resistant to fatigue, large in structural rigidity and good in high and low temperature impact resistance stability.

The invention discloses a text generation method. The method comprises the steps of obtaining a to-be-processed text; extracting keywords from the to-be-processed text, and performing diversity filling on the keywords to obtain a plurality of first texts; calculating a diversity score of each first text relative to the to-be-processed text; determining a second text from the plurality of first texts according to the diversity score; inputting the to-be-processed text and the second text into a pre-trained text generation model; and generating a third text with the meaning the same as that of the to-be-processed text. The invention further provides a text generation device, electronic equipment and a storage medium. According to the method, data enhancement is achieved, meanwhile, the textgeneration accuracy is improved, and the text generation effect is improved.

The invention provides a method for preparing a polyaniline / silver nanocomposite material, which belongs to the technical field of composite materials. The method comprises the following steps of: preparing nano-silver particles in microemulsion; and compounding polyaniline in situ to form a nanocomposite material. By using the method, the problem of the agglomeration of nano-silver particles in a composite material can be solved; an organic-inorganic nanocomposite material of a core-shell coating structure of which the nano-silver particles are inside and the polyaniline is outside is formed; and the organic-inorganic nanocomposite material has the characteristics of high electric conductivity, thermal property and electrochemical performance, and good application prospect. The method has the characteristics of simple process, low production cost, high production efficiency and good industrial production prospect.

The invention discloses a microwave thermoacoustic detecting and monitoring system and method. The microwave thermoacoustic detecting and monitoring system comprises an acoustic emission sensor array, an acoustic emission detector, a control system, a thermal imager, a microwave signal generator, a microwave signal amplifier and a microwave antenna, wherein the acoustic emission sensor array is arranged on a detected object; the field of view of the thermal imager covers a to-be-detected area of the detected object; the microwave antenna is aligned with the to-be-detected area of the detected object; the acoustic emission sensor array is electrically connected with the control system through the acoustic emission detector; and the control system is electrically connected with the microwave antenna through the microwave signal generator and the microwave signal amplifier in sequence and also electrically connected with the thermal imager. The microwave thermoacoustic detecting and monitoring system can realize not only on-line real-time monitoring but also recurrence and quantification of defect locations, and is wide in monitoring range, high in detection sensitivity and reliable in detection result.

The invention discloses a polycarboxylic acid water reducing agent with narrow molecular weight distribution and a preparation method thereof, belonging to the technical field of slump retaining agentpreparation. The polycarboxylic acid water reducing agent with narrow molecular weight distribution and the preparation method thereof realize that the molecular weight distribution and controllability of the obtained polycarboxylic acid high-efficiency water reducing agent are greatly improved. After propyl polyoxyethylene ether is mixed with a water-soluble initiator and a water-soluble activechain transfer agent, the obtained molecular weight distribution is narrower, and the dispersibility of the product is better. At the same time, sodium methacrylate sulfonate and modified acrylate compounds are added to facilitate improving of the early strength, slump retention, reinforcement and other properties of the prepared polycarboxylic acid water reducing agent; moreover, a heat preservation interlayer with an automatic regulation function is arranged in a reaction kettle, is beneficial to realizing the conversion of heat transfer and cold transfer in the heat preservation interlayer,improving the lifting sensitivity of the temperature in the reaction kettle, eliminating the need for manual temperature regulation, and effectively avoiding the influence on the preparation of the polycarboxylic acid water reducing agent caused by large temperature control difficulty.

The invention discloses a fluorescence enhanced chip based on an all-medium artificial microstructure super-surface. An upper layer of the chip is composed of periodically-arranged nano-medium columnclusters, and a lower layer is a medium substrate; the refractive index of the upper layer is greater than that of the lower layer; the collective magnetic dipole resonance wavelength and the collective electric dipole resonance wavelength of the chip satisfy that one is equal to the excitation wavelength of a fluorescent marker, and the other is equal to the radiation wavelength of the fluorescent marker. In the periodically-arranged nano-medium column clusters, each of periodic units is a square or a regular hexagon of the same size; four nano-medium columns of the same size are contained ineach of the periodic units. The fluorescence enhanced chip disclosed by the invention has the benefits that a fluorescence signal is simultaneously enhanced from three aspects of enhancing an excitation light local field, improving the radiation quantum efficiency and improving the fluorescence collection efficiency, so that the detection sensitivity of the fluorescent marker is greatly improved.The whole chip is arranged on a low-refractive index substrate and has the advantages that the material loss is low, the preparation is simple, and the structure size can be changed to work in different wavebands.

The invention discloses an image processing method of hyperpolarized gas magnetic resonance. An imaging sequence is selected, echo time and an excitation angle are set, and original k space data of hyperpolarized gas magnetic resonance is obtained; point multiplication is carried out on the original k space data of hyperpolarized gas magnetic resonance and a coefficient weight matrix to obtain modified k space data of hyperpolarized gas magnetic resonance; and Fourier transform is carried out on the modified k space data of hyperpolarized gas magnetic resonance to obtain an optimized magnetic resonance image, and a BM3D algorithm is used to process the optimized magnetic resonance image and further to obtain a quality improved nuclear magnetic resonance image. The image quality of hyperpolarized gas magnetic resonance is improved effectively.

The present invention relates to image segmentation using templates and spatial prediction. Use the templates of neighboring pixels to predict the features of the current pixel. Pixels are assigned to segments of adjacent pixels according to deviations from the features of the template.

The invention discloses starch based composite packing which is a compound of a core-shell structure, wherein starch granules are adopted as a core of the compound of the core-shell structure; a wrapping membrane which is grafted with the starch granules and comprises an acrylamide copolymer is adopted as a shell layer of the compound of the core-shell structure; the starch comprises raw starch or modified starch; the wrapping membrane shell layer with the acrylamide copolymer is prepared from monomers (a), (b) and (c) through polymerization.

The invention discloses a to-be-printed image enhancement method, system and equipment and a storage medium. The method comprises the following steps: reading a Gerber file, and converting first coordinate data of the Gerber file to obtain second coordinate data; Obtaining two times of target bitmaps according to the second coordinate data; Storing the first target bitmap acquired for the first time in a first bitmap memory space; Storing the second target bitmap acquired for the second time in a second bitmap memory space; And performing one-time printing output on the first target bitmap, and performing at least two times of printing output on the second target bitmap. According to the method disclosed by the invention, the color block primitives in the Gerber file are extracted, and thecolor block primitives are printed for multiple times, so that the problem of color block wiredrawing in Gerber file conversion is reduced, and the effective enhancement of the Gerber file image is realized.

The invention relates to the field of rubber materials, and discloses a nitrile rubber / lignin composition, a nitrile rubber / lignin composite material and a preparation method and application thereof.The composition contains a nitrile rubber matrix, lignin, an interface reactant and a vulcanizing aid which are stored in a mixed manner or independently stored, and an activating aid is optically selected; with respect to the 100 parts of nitrile rubber matrix by weight, the contents of 1-150 parts of lignin, 0.05-30 parts of interface reactant, 0-50 parts of activating aid and 0.1-30 parts of vulcanizing aid are arranged. The nitrile rubber / lignin composite material with different mechanical properties can be obtained, the tensile strength of the nitrile rubber / lignin composite material canreach 10-30 MPa, and the elongation at break of the nitrile rubber / lignin composite material can reach 250-800%.

The invention discloses a casing damage well thin walled pipe patching device, and belongs to the technical field of casing pipe repair. The casing damage well thin walled pipe patching device comprises a patching pipe, an expansion cone of which the lower end is arranged inside the patching pipe, an upper sealing ring arranged at the upper end of the outer wall of the patching pipe and a lower sealing ring arranged at the lower end of the outer wall of the patching pipe, wherein a middle conical section of the expansion cone and a first conical section are matched with each other, high-pressure power liquid is injected into an inner cavity between the expansion cone and the patching pipe through a through hole formed in the center of the expansion cone, under driving of pressure difference force, the expansion cone moves to the upper portion of the patching pipe from the lower portion, the patching pipe continuously expands in the process that the expansion cone moves inside the patching pipe till the patching pipe is attached to the casing pipe, the patching pipe is permanently deformed under the effect of the expansion cone, and reinforcement of the thin walled pipe of a casing damage well and repair of loopholes are achieved. By the adoption of the upper sealing ring and the lower sealing ring, the sealing effect after the casing damage well is repaired is guaranteed, the repair cost and the repair difficulty of the casing damage well are lowered, and the well drilling cost is very obviously lowered.

The invention discloses a GPS (global position system) signal processing method and device. The method comprises the following steps: receiving a GPS signal, wherein the GPS signal comprises a plurality of multi-path signals; obtaining time domain information containing time-delay two-dimensional degrees of freedom, and spatial information containing a propagation direction in the plurality of multi-path signals; calculating first signal parameters of the plurality of multi-path signals by using a super-resolution technique according to the time-delay two-dimensional degrees of freedom and the propagation direction; filtering the plurality of multi-path signals, and separating the plurality of filtered multi-path signals according to the first signal parameters. The GPS signal processing method disclosed by the invention, differentiation and extraction of the multi-path signals are achieved by developing an effective multi-path signal separation technology, and researching and utilizing the multi-channel spatial information; the multi-path signals can be used for reinforcing the signal-to-noise ratio, and therefore, separation and enhancement of navigation signals under the multi-path condition are achieved by developing the effective multi-path signal combination and researching a coherent superposition method.

An inductor is integrated in VLSI and ULSI technology products for very high frequency applications. The inductor is in a microstrip transmission line configuration which can be designed in a form of straight line, spiral line or Meander line. The inductor is formed by shorting the microstrip center conductor to the lower level ground plane at one end of the transmission line. This results in an inductance which, for a given design of transmission line, and in a specified frequency range, is independent of frequency, within the operating design range. The microstrip transmission line provides an inductance which could be used on any type of substrate, with either low or high resistivity. The microstrip transmission line could utilize two or all of the metal wiring levels of the technology, allowing a wide range of inductance and quality factor design tradeoffs. An important feature in this trade-off is the ability to utilize lower (below the inductor) metal wiring levels, as well as lower silicon and polysilicon areas for other than inductor design purposes, without affecting the operation of the inductor. This is because of the isolation properties of this inductor system. By utilizing isolation layers with low relative dielectric constant, Further enhancements of the system are achieved. The inductance of this system is constant within 10% over a frequency range extending from about 8 GHz to about 35 GHz This inductor system allows the design to be optimized, through several parameters, to achieve the desired performance.

The invention discloses a life signal enhancement method based on segmented and classified enhancement processing, which is used for removing background clutters of the ultra wide band radar echo signals; selecting a target signal registration block by utilizing simulation scene simulation data; and judging whether the actual measurement window is matched with the registration block or not by using a sliding window, performing classified and segmented denoising and enhancement on a radar signal matrix, performing multi-frame weighting processing on a processing result, and finally enhancing aremote signal by using a local normalization method to obtain a finally enhanced signal matrix for positioning and detecting a life entity. According to the invention, enhancement of life signals is realized; different types of signal matrix blocks are processed differently, denoising and enhancement are effectively carried out for the types of signals, correction is carried out by utilizing adjacent frames, and the amplitude of remote signals is enhanced, so that the position of a target signal is more obvious and accurate in both a time domain and a frequency domain, and a guarantee is provided for subsequent detection.