311 results about "Spatial filter" patented technology

The invention discloses a special environment laser radar system and method based on polarization modulation and laser coding. The laser radar system comprises a polarization modulation laser emitting unit, a multi-channel receiving unit and a compressed sensing reconstruction unit. The polarization modulation laser emission unit comprises a laser, a beam expanding module, a spatial light modulator, a micro galvanometer array, a spatial filter and a first focusing lens which are arranged in sequence; the multi-channel receiving unit comprises a second focusing lens, a polarization beam splitter and a single-pixel detector array which are arranged in sequence; and the compressed sensing reconstruction unit comprises a compressed sensing processing module, an image reconstruction module and a loop adaptive control module which are arranged in sequence. The anti-interference capability in a complex environment is enhanced through polarization modulation, the detection resolution and the signal-to-noise ratio are improved in combination with laser coding, the imaging quality and stability of the laser radar in a special environment are greatly improved, and the method can be widely applied to the fields of military reconnaissance, disaster rescue, unmanned driving and the like.

Methods and apparatuses for power control and beam management to enable coexistence of radar sensing and wireless communication. A method for a UE includes determining a sensing category or characteristics for a sensing application, and selecting a spatial filter for radar sensing transmission or reception based on determined sensing category or characteristics. The method further includes identifying a radar sensing transmission power and transmitting or receiving radar sensing signals using the spatial filter and the identified radar sensing transmission power. The method further includes reporting one of communication blockage, radar sensing beam information, or CSI adapted to the radar sensing beam information to a base station or neighboring UEs.

There is provided a method performed by a network node for configuring dynamic behavior of a spatial filter of a repeater node. The method comprises configuring the repeater node with one or more higher layer parameters. The one or more higher layer parameters define one or more beam time states. The method further comprises sending a dynamic indication to the repeater node indicating a beam and an associated beam time state. There is further provided a method performed by a repeater node. The method comprises receiving signaling, from a network node, configuring the repeater node with one or more higher layer parameters. The one or more higher layer parameters define one or more beam time states. The method further comprises receiving, from the network node, a dynamic indication indicating a beam and an associated beam time state.

A method can include transmitting, by a wireless device and for a beam failure recovery (BFR) of a cell, a random access preamble with multiple spatial filters. The method can also include receiving a message corresponding to the random access preamble. The message indicates a spatial filter of the multiple spatial filters. The method can further include transmitting, after a number of symbols from completion of the BFR, an uplink signal with the spatial filter indicated by the message.

This flow cytometer includes a flow path through which an observation object flows with a fluid; an optical illumination system including a spatial optical modulation device, and a first optical element; and an optical detection system including a first light detector, wherein the optical illumination system further includes a first spatial filter disposed in a first optical path between a light source and an image position of light imaged in the flow path by the first optical element and having a first region which hinders traveling of light emitted from the light source towards the observation object, the optical detection system further includes a second light detector disposed in a second optical path between the first light detector and the image position and having a second region which directs the light modulated by the observation object towards the first light detector, and the position of the first region and the position of the second region are in a substantially optically conjugate relationship.

The embodiment of the invention discloses an image defect detection method and device and a storage medium, which are used for detecting screen defects and improving the defect detection rate. The method comprises the following steps: acquiring a first image and a second image according to different light sources and light source positions of a camera, and calculating a first image mean value; calculating a correction coefficient matrix according to the first image, the second image and the first image mean value; determining a coordinate position of dust and a coordinate position of a noisy point in the first image; adjusting a correction coefficient matrix according to the coordinate position of the dust and the coordinate position of the noise point, and correcting the first image through the adjusted correction coefficient matrix; obtaining a fitting edge of the display screen in the first image, and calculating through a homography matrix to obtain a third image; performing convolution operation according to the adaptive spatial filtering kernel matrix and the third image; performing threshold value control on the third image after the convolution operation is completed, and screening out a fourth image; and performing characteristic value analysis on the fourth image to obtain defect characteristics.

Snapshot phase-shifting diffraction modules and associated systems and methods are described that enable high spatial and temporal resolution phase imaging with high immunity to environmental factors such as vibrations and temperature changes. One example optical diffraction phase module includes a polarization grating to produce two circularly polarized light beams with opposite polarizations, a first lens to receive the two circularly polarized beams, and a spatial filter positioned at a focal plane of the first lens. The spatial filter includes two openings, one to spatially filter one of the two circularly polarized light beams, and another opening to allow another circularly polarized light beam to pass. The module also includes a second lens to focus the received light onto an image plane and to enable a phase measurement based a plurality of interferograms. The phase module can be incorporated into a microscope system that operates a reflection or a transmission mode.

Methods and apparatuses for fast beam indication. A method of operating a UE includes receiving a number (M) of transmission configuration indicator (TCI)state code points activated by a medium access control element (MAC CE) and, if the UE is configured to be indicated TCI state code points on DL control information (DCI) and M>1, receiving the DCI that indicates at least one TCI state code point from the M TCI state code points and determining a TCI state to apply to at least one of downlink (DL) channels and uplink (UL) channels. The method further includes updating one or more spatial filters for at least one of the DL channels and the UL channels based on the determined TCI state and at least one of receiving and transmitting the DL channels and the UL channels, respectively, based on the updated one or more spatial filters.

The invention discloses a bridge expansion joint acoustic monitoring method based on a beam forming microphone array, and the method comprises the steps: synchronously collecting acoustic signals through multiple channels, and achieving the high-precision signal alignment through clock offset compensation; the noise analysis module is started by combining a pre-triggering signal of a vehicle passing through the detection unit, the optimal microphone distance is dynamically determined according to sound field coherence and a signal-to-noise ratio maximization model, and a stepping motor drives a movable microphone to achieve real-time adjustment. On the basis, a spatial filtering weight is generated by adopting a self-adaptive beam forming algorithm, and directional enhancement and interference suppression of the expansion joint sound source are realized. Through collaborative optimization of a hardware structure and a signal processing method, the sensitivity and accuracy of acoustic monitoring of the bridge expansion joint are effectively improved, the abnormal sound source recognition capability can be remarkably enhanced, the environmental noise interference is reduced, and the method is suitable for intelligent monitoring and diagnosis of the long-term service state of the bridge expansion joint.

Apparatuses and methods for indication for inter-cell beam management in a wireless communication system. A method of operating a user equipment (UE) includes receiving configuration information for a list of transmission configuration indication (TCI) states, receiving TCI state code points activated by a medium access control-control element (MAC CE), and receiving DL control information (DCI) indicating at least one of the activated TCI state code points. The method further includes determining a TCI state to apply to at least one of downlink (DL) channels and uplink (UL) channels within at least one entity; updating one or more spatial filters for at least one of the DL channels and the UL channels based on the determined TCI state; and receiving and transmitting the DL channels and the UL channels of the at least one entity, respectively, based on the updated one or more spatial filters.

The invention provides a hydraulic power plant medium leakage identification method and system, and relates to the technical field of hydropower leakage identification, and the method comprises the steps: deploying a high-definition video monitoring device and an operation state sensor module, carrying out the synchronous registration, configuring infrared channel enhancement and polarized light interference suppression, and carrying out the spatial filtering noise reduction and adaptive adjustment; and configuring a multi-modal enhanced input tensor. High-definition video monitoring equipment and an operation state sensor module are deployed in an operation area of a hydraulic power plant, and technologies of infrared channel enhancement, polarized light interference suppression, spatial filtering noise reduction and the like are combined, so that a multi-mode enhanced input tensor is constructed; according to the method, a clear leakage area identification effect can still be kept in a night low-illumination environment, water vapor and fog interference and metal reflection conditions, so that the problem that the identification precision is reduced due to the fact that the prior art depends on single-mode input is effectively solved, and stable distinguishing of oil medium leakage and water medium leakage is achieved.

Provided in the embodiments of the present application are a wireless communication method and devices. The method comprises: on the basis of a measurement result corresponding to a first monitoring signal set or a confidence coefficient corresponding to spatial filters predicted in a first prediction data set, a first communication device monitors the prediction performance of a first network model.

The invention discloses an electroencephalogram signal analysis method, and relates to the technical field of electroencephalogram signal processing. The method comprises the following steps: collecting and preprocessing a multi-channel electroencephalogram signal; establishing a spatial filter, and separating and storing task-related signals and task-independent signals from the signals; constructing an auxiliary classifier to generate an adversarial network, training an auxiliary classifier by using the task-independent signal to judge whether task-independent noise is mixed in an artificial signal generated by a generator, and applying punishment to the generator, so as to generate a high-quality and high-fidelity task-related artificial electroencephalogram signal; and jointly inputting the generated signal and the original signal into a CNN-LSTM-Attention hybrid model for training to obtain a final spatial filtering and intention recognition model. According to the method, the problem of model performance bottleneck caused by insufficient individual training data in a steady-state visual evoked potential brain-computer interface system is effectively solved, the accuracy and robustness of patient intention recognition are remarkably improved, and meanwhile, the calibration burden of a user is relieved.

The present disclosure relates to methods and apparatuses suitable for an uplink beamforming framework for advanced radio technologies such as 5G. The method performed by a UE comprises: receiving (2001), from a network node, via a higher layer, a configuration of an Information element (IE) comprising a set of parameters used for the configuration of an UL beam direction or a spatial filter to be used in a UL transmission; wherein the IE contains at least: an ID unique to each IE and an ID of an UL reference signal, RS resource or a DL RS resource; and applying (2002) the UL beam direction or spatial filter IE for the transmission of one or more of the PUSCH, PUCCH resource(s) and / or Sounding Reference Signal, SRS resource(s).

The described techniques enable repeated physical random access channel (PRACH) preamble transmissions across multiple random access occasions (ROs) using a same spatial filter. A user equipment (UE) may transmit a PRACH preamble across multiple ROs, where each RO is associated with a same synchronization signal block (SSB) or channel state information reference signal (CSI-RS). The PRACH repetitions may be transmitted in ROs in accordance with a first mapping rule: first, in increasing order of frequency resource index; second, in increasing order of a time resource index; third, in increasing order of PRACH slot indices; and fourth, in increasing order of PRACH association period indices. Additionally, or alternatively, the PRACH repetitions may be transmitted in ROs in accordance with a second mapping rule: first, in increasing order of time resource index; second, in increasing order of PRACH slot indices; and third, in increasing order of PRACH association period indices.

Described herein are methods and systems for protecting a light detection and ranging (LIDAR) device against external light that is originated at a light source other than a light source of the LIDAR device and that is being emitted towards the LIDAR device. In particular, the LIDAR device may be equipped with a mitigation system that includes an interference filter, an absorptive filter, an adaptive filter, and / or a spatial filter. Additionally or alternatively, the LIDAR device may be operated to carry out reactive and / or proactive mitigation operations. For example, the LIDAR device may be operated to vary over time characteristics with which light is being emitted and to only detect light having characteristics that match the characteristics with which light is being emitted. In another example, the LIDAR device may be operated to activate a shutter to block the external light from being detected by the LIDAR device.

The invention provides a view rendering method and device based on a two-dimensional Gaussian splash model, and electronic equipment, and belongs to the technical field of computer graphics and machine learning, and the method comprises the steps: calculating an intersection point of light emitted from a pixel point in an original image of each viewpoint and each two-dimensional Gaussian primitive, aiming at each viewpoint, obtaining a two-dimensional Gaussian splash model; rendering a rendering view of the viewpoint according to each two-dimensional Gaussian primitive, a preset object space filter and the plurality of intersection points of the viewpoint, and determining a rendering loss value of the viewpoint according to the original image of the viewpoint, the monocular normal graph, the rendering view and each intersection point of the viewpoint, according to the number of pixels of the original image covered by each two-dimensional Gaussian primitive, the depth scaling factor and the rendering loss value of each viewpoint, obtaining a region sensing gradient of each two-dimensional Gaussian primitive, and splitting the two-dimensional Gaussian primitive according to the optimization round and the region sensing gradient, the two-dimensional Gaussian primitive can accurately render detail information of a scene, so that the quality of view rendering is improved.

A visualization system for dynamically visualizing an eye includes a laser module operable for outputting a primary laser beam along a beam axis, a beam splitter positioned in the beam axis and configured to direct a first beam portion along the beam axis and a second beam portion along a detection axis that is orthogonal to the beam axis. A microelectromechanical system (MEMS) scanner is arranged on the beam axis and configured, in response to the first beam portion, to output a scanning laser along a visualization path. An avalanche photodiode (APD) detector receives the second beam portion. A 4F correlator optical system has a spatial filter arranged along the visualization path. An optional optical flat may be disposed between the eye and the 4F correlator optical system to achieve stereo parallax.

Disclosed are information reporting method, access manner determining method, terminal, and network device. The method includes: performing measurement on part or all of M beams, where N beams in the M beams are beams generated by a network device based on a same transmit spatial filter; and reporting first information to the network device based on measurement results of part or all of the M beams, where the first information includes at least one of the following: a target measurement result and access state information; where the target measurement result is a measurement result determined based on the measurement results of part or all of the M beams, and the access state information is information that is for indicating an access manner of accessing the network device by the terminal and that is determined based on the measurement results of part or all of the M beams.

Systems and methods for operating phased arrays are described. A circuit can receive an index associated with an antenna among a plurality of antennas in a phased array. The circuit can use the index to identify at least a phase value and a gain value of a known beam. The circuit can receive at least one static configuration of the antenna and at least one beam transformation parameter. The circuit can transform, based on the at least one beam transformation parameter and the at least one static configuration, the phase and gain values of the known beam into phase and gain values of a desired beam. The circuit can map the phase value of the desired beam to a phase shifter setting of the antenna and the gain value of the desired beam to a variable gain amplifier setting of the antenna to generate the desired beam.

Embodiments include methods for a user equipment (UE) configured for beam reporting in a wireless network. Such methods include receiving a configuration of at least first and second resource sets. Each resource set includes multiple reference signals associated with corresponding multiple spatial filtering configurations. Such methods include performing measurements on the reference signals of the first and second resource sets and sending, to the wireless network, a beam report including the measurements arranged in at least first and second groups. Each group includes measurements performed on a first reference signal from the first resource set and on a second reference signal from the second resource set. The first and second reference signals are received concurrently by the UE. One measurement included in the first group is expressed as an absolute value, while others in the first group are expressed as differential values relative to the absolute value.

Provided are a method and device for determining a power control parameter, and storage medium. The method includes: determining a beam state of an uplink transmission; and determining, based on the beam state, the power control parameter of the uplink transmission, where the beam state at least includes one of the following: a QCL state, a TCL state, spatial relation information, reference signal information, spatial filter information or precoding information.

The invention provides an iterative spectrum-space hyperspectral anomaly detection method and system based on a multi-feedback mechanism. The method comprises the steps of obtaining a to-be-detected hyperspectral image; adopting a traditional anomaly detection algorithm to calculate an anomaly score of each pixel point of the hyperspectral image, and generating a spectral anomaly graph; binarization processing is carried out on the spectrum abnormal image, an abnormal target area is extracted, and a spectrum foreground image is generated; performing spatial filtering processing on the spectral anomaly graph, extracting local spatial information, and generating a spatial filtering graph; combining the spectral anomaly graph, the spectral foreground graph and the spatial filtering graph according to weights to obtain a new hyperspectral image; updating the original hyperspectral image with the new hyperspectral image; repeating the steps; after each iteration, calculating the similarity between the spectral foreground images generated in the current iteration and the previous iteration; if the similarity reaches a preset convergence threshold value, iteration is stopped, and a final anomaly detection result is output. According to the detection method provided by the invention, the detection precision is improved, and the calculation efficiency is improved.

A method, system and apparatus for explicit common beam index configurations for a physical uplink control channel (PUCCH) are disclosed. According to one aspect, a method in a wireless device (WD) includes receiving a common beam index configuration, the common beam index configuration indicating at least one common beam index, each of the at least one common beam index being associated with a unified transmission configuration indication (TCI), state of a plurality of unified TCI states. The method also includes determining a first spatial filter for a first physical uplink control channel, PUCCH, transmission based at least in part on a first unified TCI state associated with a first common beam index of the at least one common beam index.

The invention relates to the technical field of defect detection, in particular to a defect detection method and system based on a microwave frequency crystal resonator, and the method comprises the steps: forming a microwave probe through a microwave frequency crystal resonator array, placing a to-be-detected material below the microwave probe, and setting a scanning area and scanning step lengths in two directions on the surface of the material; controlling the probe to perform point-by-point scanning according to step length, and collecting a plurality of reflection coefficients of each sampling point to form an echo signal matrix; performing singular value decomposition on the matrix, applying an adjustable coefficient to a first singular value and a second singular value, and adaptively selecting an optimal coefficient according to imaging quality to reconstruct an echo signal; performing two-dimensional Fourier transform on the reconstructed matrix, constructing a spatial filter in combination with probe spacing and defect depth to perform phase compensation, performing two-dimensional Fourier transform to obtain a defect image, and performing threshold segmentation on the defect image to obtain a binary image only containing defects; and analyzing the connected regions to obtain the gravity center position of each defect and the defect area determined by the pixel number and the single pixel area. The problems of serious clutter interference, insufficient defect imaging contrast ratio, difficulty in quantitative evaluation of defect size and the like in the existing microwave detection can be solved.

The methods and apparatuses for signaling framework for flexible beam management in a wireless communications network. A method performed by a UE comprises: receiving, from a network node, via a higher layer, a configuration of at least one information element (IE), said configuration comprising at least: an identifier (ID) unique to each IE and ID(s) of one or more uplink (UL) resource(s) and / or downlink (DL) resource(s) that is / are used to indicate at least a spatial filter or beam direction for transmission of at least a Physical Uplink Shared Channel (PUSCH) resource and / or a Physical Uplink Control Channel (PUCCH) resource, and / or a Sounding reference Signal (SRS) resource; and applying the configuration provided in the at least one IE for the transmission of the PUSCH resource, and / or the PUCCH resource and / or the SRS resource. There is also provided a method performed by a network node, a UE and a network node.

A method (300) performed by a user equipment, UE (612), for indicating Downlink- Reference Signal, DL-RS, characteristics for transmission using a set of spatial filters includes transmitting (302), to a network node (610), information comprising a second set of DL-RS characteristics to be used for transmission of a third set of DL-RSs. The method includes receiving (304), from the network node, the third set of DL-RSs transmitted using a third set of spatial filters with the second set of DL-RS characteristics, and the third set of spatial filters comprises at least some of a second set of spatial filters. Prediction information is transmitted (306) to the network node, and the prediction information includes at least one predicted spatial filter that is a best spatial filter from a first set of spatial filters. The prediction information is based on a first set of DL-RSs associated with a first set of DL-RS characteristics. The first set of DL-RSs are associated with the first set of spatial filters and the second set of DL-RSs are associated with the second spatial filters.

A method of operating a re-configurable reflective device, RRD (109) is provided. One or more wireless communication devices (102, 103, 104) are served by an access node (101) via the RRD (109) using multiple spatial data streams. The RRD (109) comprises multiple reflective elements (1094), the multiple reflective elements (1094) being grouped into a plurality of subsets (691-697), the multiple reflective elements (1094) of each subset (691-697) being re-configurable to provide multiple spatial filters. The method comprises obtaining, from the access node (101) and for each subset (691-697) of the plurality of subsets (691-697), a respective first indicator indicative of a respective entry of a respective first codebook and a respective second indicator indicative of a respective entry of a respective second codebook, and reconfiguring, for each subset (691-697) of the plurality of subsets (691-697), the respective multiple reflective elements (1094) to provide a respective one of the multiple spatial filters, based on the respective entry of the respective first codebook and the respective entry of the respective second codebook.

Methods and apparatus for accuracy improvement for opportunistic DMRS or CSI-RS assisted beam prediction. In one embodiment, an apparatus receives a TCI state configuration with respect to a target reference signal, the TCI state configuration including at least one QCL configuration, the at least one QCL configuration including a spatial transmission parameter shared with a source signal. The apparatus receives, from the network entity, a target reference signal associated with the TCI state configuration, wherein a transmit spatial filter of the target reference signal corresponds to a source signal from the TCI state configuration. The apparatus may send a report of the source signal and the predicted channel characteristics for the TCI configuration to a network entity. The apparatus may send, to a network entity, an indication of support of UE capabilities associated with at least one QCL configuration including spatial transmission parameters shared with the source signal.

A random-access procedure with multiple beams for a wireless device can include transmitting a first preamble using a first spatial filter and a second spatial filter. If the wireless device does not receive a random-access response to the first preamble, the wireless device can determine a third spatial filter for transmitting a second preamble. In the event of the third spatial filter being different from the first spatial filter and the second spatial filter, a power ramping counter can be suspended. Additionally, the wireless device can transmit the second preamble using a transmission power determined based on the power ramping counter.