140 results about "Spectrum band" patented technology

The invention discloses a space-air-ground integrated broadband narrowband adaptive emergency communication system, and relates to the technical field of space-air-ground integrated communication, and the system comprises a communication management center, a spectrum environment sensing module which is used for monitoring the use condition of each spectrum bandwidth through spectrum monitoring equipment disposed at each layer of space, air and ground, and sending the use condition of each spectrum bandwidth to the communication management center; comprising spectrum utilization rates of broadband and narrowband services, and constructing a dynamic spectrum map; and the demand prediction module is used for predicting spectrum demands of future broadband and narrowband services in combination with the historical communication data and the current network state. Through the dynamic spectrum allocation technology and in combination with 5G waveforms, spectrum resource allocation can be adjusted in real time according to actual service requirements and network conditions, resource waste or insufficiency in a traditional fixed spectrum allocation mode is avoided, the utilization rate of spectrum resources is remarkably improved through intelligent spectrum management, and the spectrum allocation efficiency is improved. The efficient cooperative work of broadband and narrowband services is ensured, and reliable spectrum guarantee is provided for emergency communication.

The invention discloses a depth and color fused true color three-dimensional point cloud acquisition method and system, and the method comprises the steps: setting a plurality of lasers to emit specific spectrum laser, enabling the specific spectrum laser to be reflected by the surface of an object, and filtering the specific spectrum laser through a narrow-band optical filter of a corresponding wave band, thereby enabling a corresponding sensor to only receive a single-spectrum laser line emitted by a corresponding laser emitter. A laser center point position and an intensity response value are extracted through a sub-pixel-level laser line refinement technology; calibrating the unified measurement coordinate system through sensor pose calibration; according to the light transmittance of an optical filter, spectral response characteristics of an image sensor and the like, correcting and compensating the intensity response value, calculating a compensation factor to obtain a color value of a measurement point, fusing a three-dimensional coordinate with corrected color information, outputting true color point cloud data, and presenting depth and color information of an object at the same time. The three-dimensional information and the color information of the object are synchronously obtained, so that the measurement data contain rich spectral characteristics.

Technologies for managing interference between terrestrial network (TN) and non-terrestrial network (NTN) are disclosed. An example method includes determining a location of a user equipment (UE), assessing potential interference between TN and NTN based on the determined UE location and spectrum band coverage information of TN and NTN, acting on the UE's connection to the NTN or a request from the UE for connection to the NTN based on the assessed potential interference, and updating the spectrum band coverage information of TN and NTN.

The invention discloses a water quality inspection system based on a full-spectrum unmanned aerial vehicle, and relates to the technical field of environmental monitoring, the system comprises a spectrum acquisition module for acquiring an original spectrum data set containing related information of pollutant types and concentrations to obtain preliminary spectral feature distribution, a data preprocessing module for preprocessing the initial spectral feature distribution according to the preliminary spectral feature distribution, and a water quality inspection module for inspecting water quality according to the data preprocessing module. The system comprises an original spectrum data set, a feature extraction module for denoising the original spectrum data set to obtain a pure spectrum signal set, and a feature extraction module for extracting specific signal features of pollutants for the pure spectrum signal set and determining a spectrum band range corresponding to each feature to obtain a characterized spectrum signal subset; the water quality inspection system based on the full-spectrum unmanned aerial vehicle realizes real-time monitoring and analysis of water body pollution, can quickly identify the types, concentrations and diffusion conditions of pollutants, provides scientific basis and decision support for water body pollution treatment, and has important environmental protection significance.

The invention discloses a photovoltaic cell panel invisible defect detection device based on multispectral imaging. The photovoltaic cell panel invisible defect detection device comprises a photovoltaic cell panel to be detected; the excitation module is configured to enable the photovoltaic cell panel to be detected to generate a short-wave infrared band under the irradiation of an excitation light source; the excitation light source comprises a near-infrared light-induced excitation light source and / or an electroluminescent driving power supply; the spectrum acquisition module comprises a multispectral imaging system composed of a variable optical filter and an area-array camera, the variable optical filter adopts a wavelength programmable narrow-band filtering assembly, and the transmission wavelength of the variable optical filter covers a 1050-1250 nm characteristic spectrum band; and the image acquisition and processing system is configured to control switching of spectrum channels of the variable optical filter, control the area-array camera to shoot multispectral images in sequence and process the images. The device overcomes the adverse effect of the sunlight environment on photoluminescence imaging or electroluminescence imaging of the photovoltaic cell panel, so that the imaging level of invisible defects of the photovoltaic cell panel is improved.

Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may be configured to receive, from a second UE, a first sidelink control message indicating a first reserved resource to be used by the second UE for sidelink communications in a shared radio frequency spectrum band. The first UE may additionally receive, from a third UE, a second sidelink control message indicating a second reserved resource to be used by the third UE for sidelink communications in the shared radio frequency spectrum band. The first UE may transmit an indication of a conflict between the first and second reserved resources based on the first and second reserved resources overlapping in time and frequency, a signal strength for a signal received from the second UE, the third UE, or both, and a channel access parameter for communications with the second UE, the third UE, or both.

The invention discloses a pixel response inconsistency correction method and system. The method relates to the technical field of pixel response correction and comprises the following steps of pixel dynamic offset calculation, flat field coefficient acquisition, pixel-level comprehensive correction and dead pixel self-repairing secondary optimization. The method comprises the following steps: acquiring a dark frame image and real-time temperature data, and calculating a dynamic offset of a pixel by means of a temperature-time double-domain prediction model; a flat field coefficient is obtained by fusing a basic value calibrated by a laboratory miniature integrating sphere in a full spectrum band and an updated value obtained by in-orbit observation of a deep space and a cloud top and processing of dead pixel detection and the like; then combining a GPS, an attitude angle and a real-time temperature, and using an offset and a flat-field coefficient to carry out pixel-level correction; and finally, a gain compensation matrix is output by means of a deep reinforcement learning model containing a convolutional neural network and a long-short-term memory network, the image is secondarily optimized through a dead pixel self-repairing module, the pixel response inconsistency correction precision is improved, and the problem that in the prior art, the pixel response inconsistency correction error is large is solved.

The invention discloses a multispectral microscope blood cell automatic classification and counting system. The system is composed of a multispectral illumination and microscopic imaging module, a spectrum and geometric calibration module, a multispectral preprocessing and cell segmentation module, a multispectral discrimination index and spectral band weight adaptive updating module, a cell graph structure classification module, a man-machine interaction module, an online adaptive learning module and the like. The method comprises the following steps: acquiring a blood smear image by a system under a narrow-band multi-spectrum condition, constructing cellular spectrum-morphological characteristics by combining a multi-scale segmentation result after noise suppression, flat field correction and background deduction, generating a discrimination index with a self-adaptive spectrum band weight, and completing joint classification and counting on a cell map; and meanwhile, carrying out constrained increment updating on the spectral band weight and the classification model by utilizing an artificial correction result of the low-confidence-coefficient cells. Compared with a traditional single-channel microscopic imaging and static classification method, the method has higher classification accuracy and counting stability under different dyeing and imaging conditions, and the workload of manual recheck can be reduced.

The invention discloses a WiFi (Wireless Fidelity) 7 spectrum sharing method, device, equipment and medium, relates to the technical field of wireless communication, and is used for solving the problem of unreasonable spectrum resource scheduling. The method comprises the following steps: generating a candidate bandwidth perforation mode set according to a channel occupancy rate matrix; wherein the candidate bandwidth perforation mode supports asymmetric multi-layer nested segmentation of the spectral bandwidth; inputting the candidate bandwidth perforation mode set and channel state information (CSI) into the trained mixed AI model to obtain an optimal perforation mode; wherein the trained mixed AI model is composed of hierarchical reinforcement learning HRL, a time convolution network TCN and a graph neural network GNN; and according to the optimal perforation mode, WiFi 7 spectrum sharing is carried out, so that the spectrum sharing capability of WiFi 7 can be remarkably improved.

The invention belongs to the technical field of meteorological observation, and particularly relates to a sounding balloon detection method based on a remote sensing image, which comprises the following specific steps: searching to obtain a to-be-analyzed image list IC according to a specified search area, retrieving satellite image data products in a specified space-time range, and obtaining a to-be-analyzed image list IC according to the to-be-analyzed image list IC; an original image is recorded by adopting a 16-bit unsigned integer (uint16), according to the method described by the invention, the color characteristics of the target in each wave band are highlighted through wave band calculation, and further screening is carried out by utilizing a spatial relationship, so that the detection of the high-speed flight target is realized, the algorithm process is simple, and the calculation complexity is low; according to the method, only R / G / B three-band data is needed, and the R / G / B spectrum band is commonly possessed by an optical satellite, so that the algorithm can be applied to other optical satellite image data by adjusting parameters, and the applicability is high.

The invention provides a frequency interleaving system and electronic equipment, and the system comprises a sampling circuit which carries out the sampling of an input signal based on N sampling modules; the input signal is a continuous time analog signal, and the output signal of the sampling circuit is a discrete time analog signal; the frequency interleaver is used for decomposing the broadband signal output by the sampling circuit into N narrowband signals, and the spectral bandwidth of each narrowband signal is one sub-band of the spectral bandwidth of the input signal; the signal processing circuit is used for performing signal reconstruction on the output signal of the frequency interleaver based on a signal reconstruction unit; n is a natural number greater than or equal to 2. According to the frequency interleaving system and the electronic equipment, under the condition that the frequency of the high-frequency input signal is not mixed to the intermediate frequency or the baseband, the high-frequency analog input signal is directly sampled, and the robustness of errors between channels is realized by combining the frequency interleaver; the system overhead is small, the system implementation is simple, and frequency response mismatch is not introduced.

The application provides a receiving end filter and a preparation method thereof, and a combined filter, and belongs to the field of coating technology. The application solves the problem that the existing receiving end filter is relatively single. The receiving end filter comprises a glass substrate, a narrow-band pass film system and an anti-reflection film system. The narrow-band pass film system comprises silicon oxide film layers and hydrogenated silicon / hydroxylated silicon / nitrogen hydrogenated silicon film layers which are alternately deposited layer by layer, and a silicon oxide film layer as an outermost layer. The anti-reflection film system comprises silicon oxide film layers and hydrogenated silicon / hydroxylated silicon / nitrogen hydrogenated silicon film layers which are alternately deposited layer by layer, and a silicon oxide film layer as an outermost layer. The receiving end filter has the advantages that the overlapping high transmittance is achieved within an angle range of 0°-60° of an incident angle, and the demand cut-off spectrum band has the effect of inhibiting the transmission of light signals within the angle range of 0°-60° of the incident angle.

A Fourier transform infrared spectrum measurement system and method, the system comprises a sampling device, a field programmable gate array (FPGA) and a host computer; the host computer is used for receiving a sampling rate parameter input by a user and sending the sampling rate parameter to the FPGA; the FPGA is used for calculating a clock frequency according to the sampling rate parameter, setting the clock frequency and generating a clock signal to send to the sampling device; the sampling device is used for collecting interferogram data according to the clock signal and sending the interferogram data to the FPGA after processing; the FPGA is further used for forwarding the interferogram data to the host computer; and the host computer is further used for completing spectrum measurement according to the interferogram data. Through the scheme, a spectrum measurement system with adjustable sampling rate, spectrum band and resolution is realized, the processing speed is fast, the control of the sampling rate is more accurate, and the system is easy to integrate and has lower cost.

Spectrum allocation in non-terrestrial wireless networks is efficiently and intelligently managed by predicting traffic loads for beam cells using historical network traffic data and a trained model. Beam cells with higher predicted traffic loads are assigned larger spectrum bandwidths, while other beam cells are assigned smaller, non-overlapping bandwidths that dynamically change frequencies according to a predefined hopping sequence. Example solutions disclosed herein optimize bandwidth utilization and minimize interference, enhancing service quality and coverage in satellite communication systems.

The invention relates to the technical field of multi-spectral TDI detectors, in particular to a method for improving the line frequency matching precision of a multi-spectral TDI detector, the multi-spectral TDI detector comprises at least two spectral bands, each spectral band has a line period with a respective length, only one time sequence reset signal exists in a driving control signal sent to the multi-spectral TDI detector by an imaging controller, and only one time sequence reset signal exists in a driving control signal sent to the multi-spectral TDI detector. The cycle period of the time sequence reset signal adopts the longest row period in each spectrum of the multi-spectrum TDI detector to reset each spectrum counter in the imaging controller; the main clock frequency of the time sequence signal of each spectrum band in the imaging controller is integral multiple of the pixel clock frequency; a charge transfer time sequence signal is adjusted according to an equal-time adjustment rule; and the analog-to-digital conversion and post-stage control signal is used for adjusting the time sequence position after the period length of a plurality of sub-rows reaches integral multiples of the pixel clock, so that the matching precision of the period length of the sub-pixel clock is realized in a single time sequence reset signal state.

Aspects relate to an integrated access backhaul (IAB) - distributed unit (DU) resource configuration framework for paired (e.g., frequency division duplex (FDD)) spectrum. For paired spectrum, two DU resource configurations per cell can be supported, including one for a first spectrum band (e.g., downlink band) of the paired spectrum and another for a second spectrum band (e.g., uplink band) of the paired spectrum. Each DU resource configuration can include a respective symbol pattern for a plurality of slots of a symbol type (e.g., downlink (DL), uplink (UL), flexible), and a corresponding availability attribute for each symbol type (e.g., hard, soft, or unavailable). A DU of an IAB node in an IAB network can receive the two DU resource configurations for the paired spectrum from a central unit (CU) of an IAB donor node in the IAB network.

The embodiment of the present application discloses an interference coordination method, device and system to achieve interference avoidance while improving the utilization rate of spectrum bandwidth. The method includes: the first TDD system and the second TDD system are adjacent asynchronous TDD systems, the first TDD system uses the first designated frequency domain resource to communicate with the UE in the first time slot, and the second TDD system uses the second designated frequency domain resource to communicate with the UE in the second time slot, and the first designated frequency domain resource is different from the second designated frequency domain resource; or the first TDD system modifies the time slot configuration of the first time slot corresponding to the third time slot when communicating with the UE in the first time slot, and the second TDD system modifies the time slot configuration of the second time slot corresponding to the fourth time slot when communicating with the UE in the second time slot, the first time slot and the second time slot have the same time domain position and different functions, and the first TDD system is not adjusted in other time slots except the first time slot and the third time slot, and the second TDD system is not adjusted in other time slots except the second time slot and the fourth time slot.

The invention discloses a Raman spectrum self-supervised learning method and system based on a mask auto-encoder, and the method comprises the steps: a data augmentation step: randomly adding spectrum jitter or Gaussian noise, and increasing the amount of pre-trained data; a random mask processing step: destroying a random mask of a spectrum band without a label in the pre-training data set, and constructing a self-supervised preposed agent task; a pre-training step: pre-training the model by adopting generative learning; a pre-training evaluation step: obtaining spectral denoising and clustering results; a fine tuning step: performing fine tuning on the pre-training model and the added classification layer by using a small amount of labeled data to obtain a final classification model; and a fine tuning evaluation step: inputting test data into the fine-tuned classification model to obtain a final Raman spectrum classification result. Compared with other supervised learning methods, the method can learn more spectral features except label limitation, and can improve the spectral classification efficiency and accuracy only by using a small amount of labeled data under the condition that a large amount of labeled data cannot be obtained.

A communication system is disclosed in which communication between a UE and a base station occurs in uplink only, downlink only, or full duplex, slots or symbols. Frequency resources are configured for communication in full duplex slots that include frequency resources for an uplink subband and / or frequency resources for a downlink subband. The frequency resources for the uplink subband, or the downlink subband, are distributed throughout a bandwidth of an unlicensed spectrum band, or throughout a bandwidth of a one or more subbands of an unlicensed spectrum band.

Wireless communication systems, including systems, apparatuses, and methods for measurement capability and configuration on shared spectrum terrestrial networks (TNs) and non-terrestrial networks (NTNs) are disclosed. A user equipment (UE) includes a transceiver and a processor configured to cause the UE to receive, via the transceiver, control signaling indicating a neighbor cell measurement configuration for a radio frequency (RF) spectrum band utilized by both a TN device and an NTN device to serve UEs. The processor is further configured to receive, via the transceiver and according to the indicated neighbor cell measurement configuration, reference signals of the RF spectrum band from the TN device and from the NTN device. The processor is further configured to perform a mobility operation based on the reference signals from the TN device, the reference signals received from the NTN device, or both.

Methods, systems, and devices for wireless communications are described where a system bandwidth within a shared radio frequency spectrum band may be divided into multiple sub-bands. A base station may use a fallback downlink control information format to provide a resource grant to a user equipment, where the fallback downlink control information has a predetermined number of bits. To provide an indication of one or more of the sub-bands that are to be used for uplink communications when using fallback downlink control information, an explicit or implicit indication may be provided. Such sub-band indication may allow for the user equipment to use a particular sub-band that is available for transmissions in a shared radio frequency spectrum band. Indications of one or more sub-bands may be provided explicitly by a sub-band indication field in a fallback downlink control information, or implicitly by one or more downlink transmissions of a base station.

This invention discloses a method for simplifying coherent DSP. A pilot signal (PT) is inserted outside the spectrum band of each dual-polarization signal at the transmitter. The receiver extracts the pilot signal through low-pass filtering. Frequency offset, phase noise, and polarization rotation are then estimated and compensated. A simple PAM equalization algorithm or a real 2x2 multiple-input, multiple-output (MIMO) equalization algorithm is then used to eliminate intersymbol interference (ISI), simplifying the coherent DSP. This method achieves not only fast polarization tracking capabilities and low complexity, but also low power consumption.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine resource selection priority levels associated with available resources for sidelink signaling in an unlicensed radio frequency spectrum band, the resources selection priority levels may be determined based on resource reservation information of the available resources, a time domain location of the available resources, or both. For example, a first resource of the available resources may be associated with a higher priority than a second resource of the available resources in resource selection. The UE may select one or more resources for the sidelink signaling from the available resources based on the resource selection priority levels associated with the available resources. The UE may transmit the sidelink signaling on the unlicensed radio frequency spectrum band using the one or more selected resources.

A method for intelligently allocating resource blocks of a radio frequency spectrum band includes detecting a presence of a plurality of user endpoint devices within a cell of a radio access network, wherein the plurality of user endpoint devices includes a first user endpoint device and a second user endpoint device, identifying a plurality of resource blocks of the cell that are available for allocation to the plurality of user endpoint devices, wherein the plurality of resource blocks includes a first resource block and a second resource block that is located closer to an end of a radio frequency spectrum band of the cell than the first resource block, determining that the first user endpoint device is more likely than the second user endpoint device to be negatively impacted by maximum power reduction, and allocating, in response to the determining, the first resource block to the first user endpoint device.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control message indicating scheduling information for a downlink message or an uplink message that is scheduled for transmission via a first subband of a first radio frequency spectrum band and via a second subband of a second radio frequency spectrum band. The second subband may be non-contiguous with the first subband, and the first and second subbands may be associated with a virtual cell that supports communications for the UE. The UE may receive a preemption message or a cancellation message indicating that at least a portion of the downlink message or the uplink message is preempted or canceled, and the portion may correspond to the first subband and the second subband. The preemption message or the cancellation message may indicate time-frequency resources that are preempted or canceled.

Methods, systems, and devices for wireless communication are described. The method can include identifying, for a UE, a configuration of a set of sets of resource blocks of a radio frequency spectrum band, receiving, from a base station, a downlink control information message that indicates, for each set of resource blocks of the set of sets of resource blocks, a communication direction for the set of resource blocks, and communicating, with the base station, using one or more sets of resource blocks of the set of sets of resource blocks in accordance with one or more communication directions indicated by the received downlink control information message, the one or more communication directions corresponding to respective ones of the one or more sets of resource blocks.

Methods, systems, and devices for wireless communications are described. A wireless device such as a UE or a base station may implement one or more listen before talk (LBT) techniques. The wireless device may determine to transmit a communication during a transmission time interval on multiple subbands of a radio frequency spectrum band. The wireless device may identify whether the transmission time interval is during a channel occupancy time for the base station for a first set of subbands of the multiple subbands. The wireless device may perform one or more LBT procedures based on the identification. For example, the wireless device may perform an LBT procedure that is selected for each subband based on identifying that the transmission time interval is during the channel occupancy time for the first set of the subbands. The wireless device may transmit the communication based on a result of the LBT procedures.

The invention discloses an SSB transmission method, device and equipment on an unlicensed spectrum, and belongs to the field of communication, and the SSB transmission method on the unlicensed spectrum in the embodiment of the invention comprises the steps that a terminal receives or detects an SSB; wherein the SSB satisfies at least one of the following conditions: FDM between the SSB and other SSBs, FDM between different parts in the SSB, use of interleaving resources, positioning in a specific bandwidth, and association with a specific waveform; wherein the width of the specific bandwidth is smaller than or equal to a first threshold value, and the corresponding bandwidth of the specific waveform on the unlicensed spectrum is larger than or equal to a second threshold value. In the embodiment of the invention, the SSB meets at least one of the following conditions: FDM between the SSB and other SSBs, FDM between different parts in the SSB, use of interleaving resources, positioning in a specific bandwidth and association of a specific waveform, so that the spectral bandwidth occupied by the SSB can be improved to meet the OCB requirement.

The invention relates to the technical field of gas spectrum detection, and discloses a noise suppression non-negative matrix factorization gas cross interference removal measurement method and system, the noise suppression non-negative matrix factorization gas cross interference removal measurement system comprises a gas supply module, a detection module and a control analysis module, the gas supply module comprises a plurality of gas tanks, a dynamic gas mixing device, a pressure controller and a one-way valve, the plurality of gas tanks are respectively and independently connected with a gas inlet of the dynamic gas mixing device to form a plurality of independent gas paths, and the pressure controller is arranged between a gas outlet of the dynamic gas mixing device and a gas inlet pipeline of the multi-way gas pool; and one-way valves for preventing backflow and cross contamination are respectively arranged on the gas inlet and the gas outlet of the multi-way gas tank. The method can stably separate and quantify the ethylene / ethane near-infrared weak spectrum band with weak absorption and serious absorption spectrum overlapping, has obvious anti-noise and anti-interference capabilities, and is convenient for miniaturization, low power consumption and batch deployment.

Methods, systems, and devices for wireless communications are described. A relay device operating in an unlicensed radio frequency (RF) spectrum band may receive a channel occupancy time (COT) indication from a first wireless device via a control message, a preamble sequence, or an on-off energy pattern, among other examples. Upon receiving the COT indication from the first wireless device, the relay device may perform a listen before talk (LBT) procedure. If the LBT procedure is successful, the relay device may relay signals between the first wireless device and the second wireless device. Otherwise, the relay device may refrain from relaying signals between the first wireless device and the second wireless device. The described techniques may enable the relay device to operate with greater efficiency and reduced power consumption. The described techniques may also improve the reliability of communications between the first wireless device and the second wireless device.