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23 results about "Interference wave" patented technology
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A building structure safety detection method and device based on acoustic wave detection and wave field separation
The application discloses a kind of based on acoustic wave detection and wave field separation building structure safety detection method and device, it is related to acoustic wave detection and safety detection technical field.The method includes obtaining initial acoustic wave detection data and carrying out acoustic wave travel time analysis, the spatial distribution range of preliminary determination internal abnormal area;For the range, increase observation density and obtain local enhanced detection data;Wave field separation is carried out to data in space domain and time domain, filter out surface wave and oblique incidence interference wave, extract vertical reflection wave data;Based on vertical reflection wave data, three-dimensional acoustic imaging is carried out, and the spatial positioning feature and geometric profile of abnormal area are obtained;Safety evaluation model is combined to carry out safety evaluation to target detection area.The present application can effectively peel off complex interference wave field, improve abnormal body spatial positioning precision and safety evaluation reliability.
Owner:HEBEI XULIAN ZHUOBANG MUNICIPAL ENGINEERING CO LTD
Communication method and communication apparatus
Provided in the present application are a communication method and a communication apparatus, which can be applied to the field of communications. In the technical solutions provided in the present application, a communication device may predict, on the basis of historical interference information of an interfering satellite to a serving satellite and state information of the interfering satellite, interference of the interfering satellite to the serving satellite at a future time point. In this way, when it is detected that future interference information is greater than a threshold, the serving satellite may instruct the interfering satellite to disable a corresponding interfering beam or change a beam modulation and coding scheme, so that interference to communication can be reduced, and communication performance can be ensured.
Owner:HUAWEI TECH CO LTD
A multi-target adaptive jamming system based on array antenna
PendingCN122093012Apointing accuratelyImproved interference suppression ratioCommunication jammingHigh level techniquesSingular value decompositionControl cell
This invention discloses a multi-target adaptive jamming system based on an array antenna, belonging to the field of electromagnetic countermeasures and signal processing technology. The system includes an array antenna unit, a multi-channel RF front-end, a signal processing and control unit, and an environmental sensing unit. The array antenna scans the airspace and captures signals from multiple targets; the signal processing and control unit runs various algorithms to estimate the azimuth, frequency, and power parameters of multiple targets; an interference suppression matrix is ​​constructed based on singular value decomposition, generating multiple low-sidelobe focused jamming beams aimed at each target; the environmental sensing unit monitors background noise intensity in real time and dynamically adjusts the transmission power through a noise adaptive power control algorithm. This invention overcomes the shortcomings of traditional jamming techniques, such as energy dispersion, poor environmental adaptability, and unintelligent resource allocation. It can simultaneously achieve efficient and precise jamming of multiple targets, significantly improving the suppression ratio of a single target, and maintaining high jamming efficiency and resource utilization even in high-noise environments.
Owner:CHENGDU SIDU SPACE TECH CO LTD
Seismic data acquisition binning design method and apparatus
This invention relates to a method and apparatus for designing seismic data acquisition trace spacing. The method includes: determining different first apparent velocities of effective waves and different second apparent velocities of interfering waves based on raw single-shot data; determining a first frequency corresponding to a first preset minimum energy value for each effective wave and a second frequency corresponding to a second preset minimum energy value for each interfering wave; determining a first candidate maximum wavenumber for each effective wave that does not produce spatial aliasing based on the first frequency and the first apparent velocity, and determining a second candidate maximum wavenumber for each interfering wave that does not produce spatial aliasing based on the second frequency and the second apparent velocity; determining a target maximum wavenumber from the first and second candidate maximum wavenumbers, and then determining the seismic data acquisition trace spacing for the target work area; and designing a trace spacing that can balance exploration costs and technical requirements using old single-shot data, saving costs and fully utilizing the value of old data.
Owner:CHINA NAT PETROLEUM CORP +1
A method and system for electromagnetic compatibility detection
This invention provides an electromagnetic compatibility (EMC) testing method and system, relating to the field of EMC testing technology. The method includes: collecting background noise and constructing a background noise feature library when the device under test (DUT) is not powered on; collecting time-domain waveform data when the DUT is powered on and running, performing sliding window matching with the background noise feature library to filter strong background noise windows; constructing a reference signal using the strong background noise windows, extracting candidate interference waveforms after adaptive filtering to remove background noise, and then filtering steady-state interference waveforms through segmented energy accumulation and fluctuation amplitude analysis; comparing the steady-state interference waveforms with standard limit lines to mark the exceeding frequency bands and their time-domain waveform segments; finally, extracting time-frequency joint features and inputting them into a classification model to output interference source type identification results. This invention can effectively remove complex background noise in the field, accurately extract the device's own steady-state interference, and automatically identify the interference source type, improving the accuracy and intelligence level of EMC testing.
Owner:HEFEI TAIDING TESTING TECHNOLOGY CO LTD
Phased array antenna-based starlink satellite communication link intelligent interference method and device
PendingCN122119750ARadio transmissionCommunication jammingInterference (communication)Communication link
The application belongs to the field of electronic countermeasures and satellite communication interference technology, and discloses a kind of star chain satellite communication link intelligent interference method and device based on phased array antenna to solve the problems of insufficient interference beams and poor interference effect in traditional technology;Firstly, the application can generate and control multiple interference beams simultaneously based on analog-digital hybrid phased array antenna, realizing the synchronous coverage and interference of multiple "star chain" satellite links in the upper air;Secondly, through high-precision estimation of OFDM signal parameters based on cyclic spectrum, accurate signal feature guidance is provided for interference;Finally, based on the extracted signal feature parameters, an intelligent decision mechanism is introduced, and through interference waveform library construction and efficiency function optimization, dynamic and adaptive selection of interference waveform and parameters is realized, thus changing the inefficient mode of relying on preset waveform;Therefore, the application significantly improves the pertinence, adaptability and overall efficiency of the interference system.
Owner:CJZH BEIJING TECH CO LTD
Methods and apparatus for interference measurement
This application provides a method and apparatus for measuring interference, capable of measuring beam lobe interference. The method includes: a first communication device transmitting reference signals on N time-frequency resources using N beams; a second communication device receiving the reference signals on the N time-frequency resources corresponding to the N beams; the N beams and N time-frequency resources are in one-to-one correspondence; a first beam among the N beams is the serving beam corresponding to the second communication device; at least one second beam among the N beams is an interfering beam corresponding to the second communication device; the first communication device receives indication information from the second communication device, indicating that the signal reception power of the reference signal received by the second communication device using a third beam on the first time-frequency resource corresponding to the third beam is greater than or equal to a first threshold, and the direction of the third beam satisfies a first condition with the direction of the first beam; at least one second beam includes the third beam; and the N time-frequency resources include the first time-frequency resources.
Owner:HUAWEI TECH CO LTD
A multi-domain one-time denoising method, device, storage medium and equipment
The present application relates to a kind of multi-domain denoising method, device, storage medium and equipment.The method comprises the following steps: S1, obtaining original gather.S2, original gather is carried out multi-domain wave field transformation.S3, the gather data in each information processing domain is respectively carried out specific interference wave elimination.S4, after the gather of interference wave elimination, wave field is reversed and all gather data after wave field reversal is merged to form optimized gather.Can reduce the error of different domain multiple denoising, improve original gather denoising precision, improve data quality, more in line with actual geological conditions, can provide reliable basis for exploration deployment.
Owner:SHENZHEN BRANCH CHINA NAT OFFSHORE OIL CORP +1
Signal shielding method and apparatus therefor, electronic device, and program product
The application discloses a signal shielding method and device, electronic equipment and program product, and relates to the technical field of communication security, wherein the signal shielding method comprises the following steps: after the shielding device is started, scanning the downlink signal transmitted by the base station within the preset range of the shielding device, analyzing the downlink signal, determining the synchronization signal, generating the shielding target information list corresponding to each preset cell based on the synchronization signal, shielding the signal of the user who has accessed the target cell based on the shielding target information list of the target cell, generating the target interference signal waveform based on all the shielding target information lists and the interference waveform generation condition, determining the interference time period based on the shielding target information list of the target cell, and periodically sending the target interference signal waveform in the interference time period to shield the signal of the user who has not accessed the target cell. The application solves the technical problem of low efficiency of signal shielding in the related art.
Owner:CHINA TOWER CO LTD
Power electronic access line reliable fault traveling wave identification method based on source explanation competition and related device
The application provides a power electronic access line reliable fault traveling wave identification method based on source explanation competition and a related device, and belongs to the field of power system fault detection. The method uses a fault point direct traveling wave source explanation model and a power electronic access point secondary disturbance source explanation model, accurately quantifies the fault point source explanation degree and the access point source explanation degree based on the comprehensive deviation of the theoretical and actual arrival time of the two types of transient sources, introduces the physical state constraint information of the power electronic access point, combines the dual source explanation degree for multi-dimensional source attribute discrimination, and discriminates the real source of the transient event through the physical competition mechanism of the dual source explanation ability, thereby solving the wave head misselection problem in the distribution network containing a large number of power electronic devices from the physical nature, avoiding the fault distance calculation deviation and fault section judgment error caused by the interference wave head misjudgment, and significantly improving the accuracy and operation reliability of the fault traveling wave identification, fault distance calculation and fault section positioning.
Owner:GUANGDONG POWER GRID CORP ZHAOQING POWER SUPPLY BUREAU
A processing method, sensor system, radar, terminal and vehicle terminal
A processing method, sensor system, radar, terminal, and vehicle-mounted device are disclosed, relating to the field of lidar technology. The processing method includes identifying interference echoes in the first echo based on a first echo acquired by a detection device (210) and at least two frames of images acquired by an imaging device (220). Since polarized beams are typically caused by multipath interference, which can also result in multiple undiscriminate peaks in the echo waveform signal received by the detection device (210), thus affecting the detection performance of the detection device (210). This method, combining at least two frames of images, can determine the image region or pixel corresponding to the polarized light, assisting the detection device (210) in identifying interference peaks in the first echo, thereby improving the detection performance of the detection device (210).
Owner:HUAWEI TECH CO LTD
A vehicle-embedded recording eavesdropping detection and shielding system and a method of using the same
The application discloses a vehicle-mounted embedded recording eavesdropping detection and shielding system and a use method thereof, relates to the technical field of vehicles, and comprises an embedded host unit, at least two fixed control units and a distributed detection and interference array. The embedded host unit is fixedly installed in a vehicle and is connected with a vehicle power supply, and is internally provided with a master control unit, a power management module and a signal processing module; the control units are embedded in front and rear interior panels of the vehicle and communicate with the master control unit through in-vehicle wiring or a vehicle-mounted bus; the detection and interference array comprises an acoustic transducer and a radio frequency antenna and is electrically connected with the embedded host unit. The master control unit can respond to any control unit starting instruction, control the array to perform full-vehicle or partition scanning on in-vehicle eavesdropping equipment, and emit ultrasonic interference waves to block sound pickup and radio frequency interference signals to block wireless transmission according to the results. The technical effects of carrying-free all-weather protection, independent operation of front and rear rows without blind area, full-dimension accurate detection and directional composite interference are achieved.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
Radar anti-jamming beam forming method based on analog-digital hybrid MIMO array
The application provides a radar anti-jamming beam forming method based on an analog-digital hybrid MIMO array, comprising: constructing an array model and estimating array errors according to array element arrangement and target observation angle; generating a transmitting and receiving calibration matrix by using a least square-based transmitting-receiving separation calibration method; dividing the transmitting array into multiple sub-arrays and making the multiple sub-arrays transmit orthogonal waveforms; calibrating the phases of the array elements in the multiple sub-arrays according to the transmitting calibration matrix, and realizing beam forming by transmitting coherent signals; separating and extracting echo signals of each sub-array from the received signals by using a waveform decoding technology, and calibrating the amplitudes and phases of the echo signals by using the receiving calibration matrix; controlling the echo sidelobe level of the calibrated receiving array by using a window function, and adjusting the beam pointing direction by using the receiving end beam forming. The application can enhance the adaptability and anti-jamming capability of the radar in a complex environment, improve the radar detection probability and reduce the false alarm probability.
Owner:HEBEI PROVINCIAL COMM PLANNING & DESIGN INST +2
Mobile object defense system
PCT designated stageWO2026116468A1Defence devicesCommunication jammingMobile entityInterference wave
[Problem] To eliminate a threat by limiting, deterring, and jamming the operation of a mobile object which poses the threat. [Solution] This defense system comprises one or more transmitters 2 for outputting specific radio waves, and a plurality of antennas 3 capable of radiating the radio waves outputted from the transmitters 2 in a specific direction. The defense system is configured to cause interference so that the radio waves radiated from the plurality of antennas 3 are strengthened at a specific point, thereby forming a radio jamming wave at the specific point, and forms a radio jamming area S by scanning the radio waves radiated from the plurality of antennas 3, and scanning the radio jamming wave within a specific two-dimensional or three-dimensional area.
Owner:OKA RYUSHUN
Intermittent sampling phase modulation jamming waveform method generated by particle swarm algorithm
ActiveCN116299213BTransmitter/receiver shaping networksNeural learning methodsAlgorithmSwarm algorithms
The application discloses an intermittent sampling phase modulation jamming waveform method based on a particle swarm algorithm, and aims to solve the defect that a target function obtained by an intermittent sampling phase modulation repeating technology in the prior art is prone to falling into a local optimal solution, and thus leading to poor jamming parameters obtained when an intermittent sampling waveform is generated. The implementation steps of the application comprise the following steps: generating a sample set composed of three different radar signals; generating a target function of a particle swarm; optimizing the jamming parameter code element width and sampling time of the intermittent sampling jamming signal by using the particle swarm algorithm; and generating the corresponding intermittent sampling phase modulation jamming signal by using the optimized optimal jamming parameter. The application has the advantages that an interference waveform library does not need to be established, and the optimal intermittent sampling phase modulation jamming waveform can be obtained by using the particle swarm algorithm.
Owner:XIDIAN UNIV +1
A method for rapid detection of water quality of river-inlet based on spectroscopy and intelligent algorithm
PendingCN122108970APhase-affecting property measurementsScattering properties measurementsRiver mouthWater quality
The application discloses a kind of based on spectroscopy and intelligent algorithm's river mouth water quality rapid detection method for discharging, it is related to water quality detection technical field, comprising the following steps: S001, establish spectrum and time series joint observation layer, obtain water body reflection light signal by the dual polarization scanning and multi-angle calibration in incident path, generate multidimensional spectral baseline matrix;S002, based on multidimensional spectral baseline matrix executes coherent phase analysis, the spectral signal in reflection path is decomposed layer by layer, extract the distribution characteristic map of optical interference order, and generate the shield mask of optical interference wave band.The application is realized to the accurate identification and correction of the spectral distortion caused by oil film interference by multi-angle optical acquisition, coherent phase analysis and multi-source data fusion, and constructs dynamic pollution track and adaptive threshold barrier, effectively improves the identification sensitivity, response speed and system stability of river mouth water quality detection for discharging.
Owner:TIANJIN ACAD OF ECOLOGICAL & ENVIRONMENTAL SCI
Thermal imaging based on-line monitoring device for thermal stress of pipeline
The present application relates to the technical fields of pipeline thermal stress online monitoring, and provides a pipeline thermal stress online monitoring device based on thermal imaging, which comprises a device and a control device connected by communication, wherein the device comprises an infrared thermal imaging assembly and a regulating valve; the control device acquires an infrared radiation image sequence and collects fluid operation state parameters, extracts fluctuation frequency and initial phase generated by internal leakage disturbance by frequency domain conversion; a stress deduction module maps the image into a three-dimensional temperature field distribution matrix and calculates an alternating thermal stress amplitude; when the alternating thermal stress amplitude reaches a threshold value, a vibration suppression control module drives the regulating valve to generate an anti-phase interference wave according to phase lead compensation amount, offsets mechanical oscillation of a target pipe section, and outputs a warning information; the present application realizes real-time monitoring and active intervention on pipeline thermal stress risk.
Owner:HUANENG GUILIN GAS DISTRIBUTED ENERGY CO LTD
Surface acoustic wave resonators and their manufacturing methods, surface acoustic wave filters
PendingCN122316272ASurface acoustic wave resonatorsInterference wave
This application provides a surface acoustic wave (SAW) resonator, its manufacturing method, and a SAW filter. The SAW resonator includes: a substrate; the substrate includes a first sound velocity layer, a second sound velocity layer, and a piezoelectric layer; wherein the propagation speed of sound waves in the first sound velocity layer is greater than that in the second sound velocity layer; an interdigital transducer disposed on the surface of the piezoelectric layer away from the first sound velocity layer; wherein the interdigital transducer includes a plurality of spaced electrode fingers; a suppression structure disposed between any two adjacent electrode fingers; wherein the suppression structure is used to suppress the generation of interference waves propagating on the surface of the piezoelectric layer; with the normal direction of the substrate as the thickness direction, the thickness of the suppression structure along the normal direction of the substrate is less than the thickness of the electrode fingers. Through this application embodiment, the generation of interference waves propagating on the surface of the piezoelectric layer is suppressed, improving the out-of-band suppression performance of the resonator.
Owner:MAXSCEND MICROELECTRONICS CO LTD
A Multi-Channel Active Thermal Compensation Method for Optical Modules Based on Dynamic Thermal Coupling Matrix
ActiveCN122092963AAchieve long-term adaptationImprove real-time performanceElectromagnetic transmittersInterference (communication)Optical Module
This invention relates to the field of optical communication technology and discloses a multi-channel active thermal compensation method for optical modules based on a dynamic thermal coupling matrix. This method solves the problems of lag and mutual interference in multi-channel performance compensation, as well as poor wavelength stability in optical modules. The invention utilizes a dynamic thermal coupling matrix to accurately predict inter-channel thermal shocks and implements preemptive three-level compensation, thereby significantly suppressing wavelength shift overshoot. Through a least-squares dynamic correction mechanism, the thermal coupling matrix can track thermal characteristic drift caused by long-term operation in real time, extending the effective lifespan of the optical module. The bit error rate is significantly reduced, and the inter-channel crosstalk suppression ratio is greatly improved, ensuring the integrity and reliability of high-speed data communication. Real-time optimization measures, such as accelerating matrix operations with hardware floating-point units and using a pre-lookup table for compensation coefficients, shorten the overall time consumption of a single compensation process.
Owner:CHENGDU GUANGCHUANGLIAN CO LTD
An interference avoidance method and device, and a storage medium
ActiveCN115915209BRadio transmissionWireless communicationTelecommunicationsInterference (communication)
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Communication method and communication apparatus
The application provides a communication method and a communication device, which can be applied to the field of communication. In the technical scheme, the communication device can predict the interference of the interfering satellite on the service satellite at a future time point based on the historical interference information of the interfering satellite on the service satellite and the state information of the interfering satellite. When the future interference information is greater than a threshold, the service satellite can instruct the interfering satellite to turn off the corresponding interference beam or change the beam modulation and coding strategy, so as to reduce the interference on the communication and ensure the communication performance.
Owner:HUAWEI TECH CO LTD
A radar anti-jamming housing
The utility model discloses a radar anti -interference casing, including the shell body, the inside of shell body is provided with the installation component for adapting different specifications radar and installs, the one side of shell body is provided with the anti -interference component of absorption interference wave band and convenient to dismantle, the one side of shell body is provided with the adjusting component of the radar monitoring angle of can adjust far from anti -interference component, the one side of adjusting component is provided with the locking assembly of for adjusting the locking of radar monitoring angle after completing, the one end of adjusting component is provided with the installation component for installing the device in fixed link, the utility model discloses through installation component, the modularization design of mounting plate, mounting hole, tablet and mounting screw rod, can flexible fixed different size's radar body, has solved the problem that only compatible single specification equipment of present casing, has reduced the equipment replacement cost significantly.
Owner:SICHUAN XINTIECHENG MASCH CO LTD
A method and device for double optimization of cognitive jamming waveform and power based on reinforcement learning, equipment and medium
PendingCN122119827AAchieving joint optimizationAvoid interference and failureBiological modelsCommunication jammingInterference (communication)Wave shape
The present application relates to the field of communication, in particular to a method and device for double optimization of cognitive interference waveform and power based on reinforcement learning, equipment and medium, according to the configurable parameters of the interference device, the interference waveform library containing multiple interference waveforms is constructed; according to the current electromagnetic environment state information of the interference target to be interfered by the interference device, the optimal interference waveform is determined from the interference waveform library; under the premise that the optimal interference waveform remains unchanged, according to the current jam-to-noise ratio state of the interference target, the lowest power meeting the effective interference threshold is determined; according to the optimal interference waveform and the lowest power, the interference signal is generated. Through the technical means of constructing the interference waveform library, determining the optimal interference waveform according to the electromagnetic environment state, determining the lowest power meeting the effective interference threshold according to the jam-to-noise ratio state, and generating the interference signal according to the optimal waveform and the lowest power, the joint optimization of waveform and power is realized.
Owner:TIANFU JIANGXI LAB