428 results about "Spatial direction" patented technology

The invention provides a frequency division multiplexing multi-beam anti-interference method for a shaped antenna, and the method comprises the steps: obtaining the signal data of each frequency band according to the multi-beam spatial domain data received by the shaped antenna and a filter of a frequency domain corresponding to the working frequency band of each beam; performing high-resolution spatial spectrum estimation on the signal data of each frequency band by adopting a MUSIC algorithm to obtain an incoming wave space direction of an interference signal; according to the incoming wave space direction of the interference signal, on the basis of a preset multi-beam zeroing anti-interference strategy, self-adaptive weights of all same-frequency beams are obtained in a spatial domain and frequency domain two-dimensional combined processing mode; the adaptive weights of the same-frequency beams are combined, a comprehensive directional diagram is obtained, and a multi-beam interference zeroing result is obtained, according to the method, the whole airspace is covered with the beams of different frequency points, and space-frequency combined suppression of airspace complex interference is achieved.

The invention discloses a hand-eye calibration method suitable for a five-axis series-parallel mechanical arm, which comprises the following steps of: analyzing coordinate conversion error distribution characteristics according to an initial hand-eye calibration matrix calculation result, and separating a total error into two components, namely a translation error and a rotation error through an error vector decomposition algorithm, obtaining distribution rules and variation trends of the errors in different spatial directions; establishing a calibration precision evaluation system according to the verification result, calculating the repeated positioning precision and the absolute positioning precision of the system by counting and analyzing the position deviation data of multiple tests, and obtaining the system performance index in the current calibration state; a self-adaptive updating mechanism is established for system performance indexes, local updating of calibration parameters is automatically triggered when environment temperature change or small deformation of a mechanical structure is detected, and a compensation model is adjusted in an incremental learning mode to avoid comprehensive recalibration.

The invention relates to the technical field of image data processing, in particular to an aluminum material surface oxidation film defect detection method and system. The method comprises the steps that surface images of the surface of the aluminum material at multiple angles are collected through a preset rotary shooting device; constructing a gray difference feature vector of each pixel point according to spatial direction vectors and gray value difference features of each pixel point and neighborhood pixel points in the surface image; acquiring matched pixel points of the pixel points at different angles by utilizing a pixel point matching relationship; determining a reflection characteristic change vector according to the gray difference characteristic vector difference characteristic between the matched pixel points under the adjacent angles; determining a defect probability value of the corresponding physical position point according to the modulus length change characteristic of the reflection characteristic change vector; and marking the pixel points of which the defect probability values are not lower than the abnormal threshold value as abnormal pixel points, clustering the abnormal pixel points to obtain the defect area, and performing grade marking on the defect area in the surface image, thereby improving the defect identification accuracy.

Apparatuses, methods, and systems are disclosed for determining a best beam for SL communication. One method (800) at a transmitting entity includes configuring (805) a SL RS for beam establishment transmission and performing (810) a plurality of transmissions of the SL RS, where each of the plurality of transmissions is associated with a different spatial direction, and where each of the plurality of transmissions is performed using one of a plurality of transmit beams. The method (800 includes) receiving (815) a feedback transmission from a Rx UE, where the feedback transmission indicates support of beam correspondence at the Rx UE, and determining (820) a best transmit beam of the plurality of transmit beams based on the received feedback transmission.

The invention relates to an AR (Augmented Reality) space true north calibration method, device and equipment and a medium. The method comprises the following steps: acquiring fixed solution positioning data in a moving process by utilizing RTK (Real-Time Kinematic) equipment; based on the fixed solution positioning data, selecting a first positioning point and a second positioning point, calculating a coordinate azimuth angle between the two positioning points by using Gaussian positive and negative calculation, and calculating a meridian convergence angle at the first positioning point; calculating an included angle between a connecting line of the first positioning point and the second positioning point and the true north direction based on the coordinate azimuth angle and the meridian convergence angle to obtain a geographic true north direction angle; and continuously monitoring data of a gyroscope of the RTK equipment and a gyroscope on the AR running equipment, and dynamically adjusting the true north direction angle in the AR space by adopting a double-loop control structure based on the geographic true north direction angle, so as to ensure that the AR space is consistent with the true geographic direction. Compared with the prior art, the method has the advantages that the AR space direction precision is improved from + / -5 degrees to + / -0.1 degrees, and the surveying and mapping standard is achieved.

The invention relates to the technical field of laser radars, and provides a laser radar angular resolution enhancement method, which comprises the following steps of: obtaining a spatial direction priority according to a vehicle course, road information and target information obtained by a vehicle external sensor so as to dynamically adjust laser pulse density and energy level; scanning data generated after N circles of continuous scanning serve as a composite frame, the starting angle of each circle is shifted, multiphase filtering and coherent superposition are conducted in a digital domain, and the effective angular resolution is obtained. The invention further discloses a laser radar device, the method and the device can adjust the pulse density and energy distribution in the ROI direction in real time according to the dynamic scene of the vehicle, the total pulse number is kept unchanged, and the total power consumption is not increased. The effective horizontal angle resolution is improved through inter-frame phase offset and multi-phase synthesis. A corner reflector and an IMU (Inertial Measurement Unit) are integrated in the laser radar, and phase and ranging errors are corrected in real time through periodic loopback calibration, so that the angle stability is kept.

The invention belongs to the technical field of remote sensing image segmentation, and particularly relates to a double-branch water body small target image segmentation method based on feature efficient interaction, which comprises the following steps: preparing a data set, constructing a network model, training the network model, selecting a proper loss function and evaluation index, and determining a segmentation model. According to the multi-scale detail feature interactive aggregation encoder, efficient fusion of multi-scale features and effective supplement of implicit relative position encoding information are achieved; the long-distance feature efficient capture encoder increases the edge segmentation effect on the small target image of the water body by processing features along a specific space direction; the cavity space convolution pyramid module based on the large convolution kernel is used for improving the ability of the model to learn a large-scale effective receptive field; the non-significant feature extraction module is used for filling up the deficiency of non-significant features. The whole network adopts a learning strategy of parallel connection of global and local features and series connection from a large scale to a small scale, and effectively extracts different scale information of the water body image.

The invention discloses an ISAC angular domain energy imaging method and an ISAC angular domain energy imaging system based on actual measurement channel response calibration ray tracing, and mainly solves the problem that an imaging model faces serious channel mismatch and cross-scene generalization limitation due to the fact that simulation data lacks physical consistency constraint in the prior art. According to the scheme, the method comprises the steps that geometric features are extracted from public map data or laser point cloud data, and an ISAC scene environment geometric model is constructed; acquiring an actual measurement channel impulse response containing multipath information by using the communication and sensing integrated equipment; performing path matching on the actual measurement channel impulse response and the ray tracing simulation channel response, inverting environment propagation parameters and correcting scattering parameters; and inputting the calibrated parameters into a ray tracking model, counting energy contribution in each space direction under the condition of a single antenna, obtaining angular domain energy distribution and confidence coefficient, and mapping the angular domain energy distribution and confidence coefficient to a spherical grid to form an imaging result. According to the method, physical mismatch between simulation and real environments is effectively eliminated, low-cost and high-precision angular domain energy imaging and confidence evaluation are realized under the condition of a single antenna, and the method can be used for imaging reconstruction of an ISAC system, environmental perception and generation of a neural network training data set.

Disclosed is a method comprising determining a spatial direction for a time interval between a first reference signal resource set in a first time slot and a second reference signal resource set in a second time slot; and transmitting one or more uplink transmissions and / or receiving one or more downlink transmissions according to the determined spatial direction during the time interval.

Embodiments of the disclosure provide a method, device and computer readable medium for detecting cells in scenarios of carrier aggregations. According to embodiments of the present disclosure, if the terminal device receives information indicating to connect to a different cell from the currently connecting cell, the terminal device detects the different cell in a spatial direction of the beam on which the information is received. In this way, a significant reduction in terminal device search and measurement effort is achieve, which leads to significant reduction in the latency.

The invention relates to a multi-scale remote sensing image target detection method and system based on frequency fusion in the technical field of remote sensing image target detection, and the method comprises the steps: firstly extracting the multi-scale features of to-be-detected remote sensing image data through a ResNet network, and then carrying out the channel adjustment, and obtaining a first feature map, a second feature map, a third feature map and a fourth feature map of which the scales decrease progressively; then splicing the first feature map and the second feature map in a channel direction, and performing channel adjustment to obtain a first fusion feature map; inputting the first fusion feature map into a shallow multi-branch representation fusion network to obtain a second fusion feature map; and under a frequency interaction Transform framework, serially performing channel direction frequency interaction and space direction frequency interaction on the second fusion feature map, the third feature map and the fourth feature map to obtain a frequency fusion multi-scale feature map. And finally, inputting the frequency fusion multi-scale feature map into a detection head network to obtain a regression prediction result and a classification prediction result. According to the method, the precision of remote sensing image multi-scale detection can be improved.

A method is disclosed of a transmitter configured to transmit more than one spatially multiplexed streams having a multi-user physical layer packet for a plurality of users. The plurality of users includes a first type user and a second type user. A first stream is assigned for the first type user and a second stream is assigned for the second type user. The method includes leaving a data field of the physical layer packet empty for the first type user, providing second type user emission strength (in a spatial direction towards the first type user) that falls below a threshold value by controlling a spatial emission pattern associated with the second type user for the physical layer packet, and transmitting the physical layer packet.

The invention relates to the technical field of trailing vortex dynamic monitoring, in particular to a short-distance parallel runway wake flow dynamic prediction method based on deep learning, which comprises the following steps of: acquiring disturbance energy level and coordinate direction and fitting propagation state, extracting disturbance source features and combining with spatial direction constraint, fitting boundaries according to propagation included angle and speed change rate and classifying, and obtaining a dynamic prediction result. Acquiring a track coordinate course angle and a flight speed, calculating a track vector and a boundary normal included angle, analyzing an interference risk factor in combination with a ratio of the speed to a propagation direction, dividing disturbance levels, and outputting a preliminary prediction result. According to the method, the state vector and the disturbance data cooperatively extract features and constrain the direction, the disturbance source positioning precision is improved, the boundary is described by combining the speed change rate and the propagation included angle, the recognition robustness is enhanced, the risk level is evaluated by fusing multi-dimensional parameters, the disturbance intensity is dynamically corrected, the track deviation is introduced, and the prediction accuracy and the response efficiency are improved.

A projection optics unit (10), in particular an EUV projection optics unit, with a housing structure (128), wherein the housing structure (128) has: an interior space (140) which the housing structure (128) encloses at least in sections, and support sections (146, 148, 150, 152) which extend out of the housing structure (128) facing away from the interior space (140), wherein an optical element (102) of the projection optics unit (10) can be arranged at least in sections within the interior space (140), wherein the housing structure (128) is a one-piece component, and wherein the housing structure (128) has a dimension of at least 2,900 mm in at least one spatial direction (x, y, z).

The invention relates to a spatial spectrum dimension scanning method, in particular to a Mamba spatial spectrum dimension scanning method for a hyperspectral image classification task, which comprises the following steps of: 1, for an input hyperspectral image tensor, performing rotation and turnover construction on an input image through four spatial directions to obtain a hyperspectral image tensor; step 2, performing interval snakelike scanning on the view in each direction; performing interval snakelike scanning: reserving pixel points in even columns in even rows; pixel points of odd columns are reserved in odd rows, and the sequence of the selected pixels in the row is reversed so as to simulate the scanning characteristic of the snakelike path. And the feature expression capability and the calculation efficiency in a hyperspectral image classification task are improved. A scanning mechanism of jump sampling and snakelike traversal is introduced in the spatial dimension, redundant sampling in the spatial dimension can be effectively reduced, spatial structure information of the image is reserved, and the classification precision of the hyperspectral image is improved on the premise of ensuring the integrity of the image spectrum and the spatial information.

Wingless aircraft (1) with several electric motor-driven lifting rotors (3) rotating about different rotor axes (2), wherein the aircraft (1) has at least one energy storage device (21) for providing the electrical energy required to operate the lifting rotors (3), at least one control device (22) for controlling the lifting rotors (3) and for communication with a ground station, and at least two camera devices (4) for capturing a panoramic image, wherein fields of view of the camera devices (4) intersect at a distance from the aircraft (1) and form a visual space surrounding the entire aircraft (1) in all spatial directions, in which an environment of the aircraft (1) is completely imaged, characterized in that a smallest, spherical rotor envelope (5) enclosing all lifting rotors (3) has a larger volume than a smallest spherical camera envelope (6) enclosing camera lenses (7) of all camera devices (4).

Apparatuses, methods, and systems are disclosed for directional LBT procedure for DRS transmission. One apparatus includes a processor and a transceiver that is operable on unlicensed spectrum. The processor indicates block locations within a Discovery Reference Signal (“DRS”) transmission window for a plurality of candidate Synchronization Signal / Physical Broadcast Channel (“SS / PBCH”) blocks. The processor performs a Listen-Before-Talk (“LBT”) procedure for a plurality of DRS transmissions within a DRS transmission window and controls the transceiver to transmit—for a given spatial direction—a SS / PBCH block upon successful LBT for the given spatial direction.

A quad-polarized antenna system according to the present invention comprises a plurality of RF chains, and an antenna array in which rows of first dual-polarized antenna units and rows of second dual-polarized antenna units are alternately arranged in a horizontal direction. The first dual-polarized antenna unit and the second dual-polarized antenna unit have different dual polarization characteristics from each other. The rows of first dual-polarized antenna units are used to form at least one first beam and at least one second beam which have + / −45° polarizations, and the rows of second dual-polarized antenna units are used to form at least one third beam and at least one fourth beam which have 0° / 90° polarizations. The first beam, the second beam, the third beam, and the fourth beam are formed towards different spatial directions, and the first and third beams correspond to main lobes, and the second and fourth beams correspond to grating lobes.

An optical system (200, 300, 400, 500) comprising a component (202), a support structure (204) for supporting the component (202), a vibration decoupling unit (206) for decoupling the component (202) from a vibration of the support structure (204), wherein the vibration decoupling unit (206) comprises a first spring element (208) connected to the component (202), a second spring element (210) connected to the support structure (204), an intermediate mass (212) connected to the first spring element (208) and the second spring element (210), and a coupling mass (214, 502, 504), wherein the coupling mass (214, 502, 504) is connected to the component (202) via at least one flexible element (216, 302, 304, 506, 510). intermediate mass (212) is connected, and wherein the flexible element (216, 302, 304, 506, 510) has an asymmetric stiffness (c) considered in at least two spatial directions (x, y). x , c y ) exhibits.

An optical system (100) for a projection exposure system (1), comprising an optical element (104, 106, 108), and a mount (132) which supports the optical element (104, 106, 108), wherein the mount (132) has a displacement device (138) which is configured to displace the optical element (104, 106, 108) linearly along exactly one spatial direction (152, 154, 156) in the event of a heat-induced deformation of the mount (132).

The invention relates to the technical field of voice signal processing, and particularly provides a voice separation method, device and system irrelevant to array geometry. The method is suitable for various microphone array structures, adopts a virtual microphone estimation mechanism to generate a virtual channel signal for enhancing spatial information density, combines frequency spectrum-time features and spatial direction features, and extracts multi-modal representation through a spatial dictionary learning and attention fusion module. And the extracted features are further input into a layered double-path modeling network, and global dependency relationships are respectively modeled on a time axis and a frequency axis, so that high-precision separation of voices of multiple speakers is realized. The system has good array structure adaptivity, can adapt to channel number changes and array shape differences, and has good application value in scenes such as teleconferences, voice recognition front ends and vehicle-mounted voice processing.

The invention provides a BEC ground state and excitation state determination method and device, equipment and a storage medium. Relates to the technical field of quantum computing. The method comprises the following steps: describing a rotation BEC in a coordinate system by adopting a multi-dimensional dimensionless Gross-Pitaevskii (G-P) equation with an angular momentum rotation item to obtain a representation equation of the rotation BEC, and processing the representation equation of the rotation BEC by adopting a virtual time method and a projection method to obtain a space-time sequence equation of a characteristic value; based on the space-time sequence equation of the characteristic values, using an OC method in the space direction and using a backward Euler method and / or a time midpoint method in the time direction to carry out complete discretization, obtaining a backward Euler type high-order format and a time midpoint type high-order format of the space-time sequence equation, carrying out iterative solution on the high-order formats, and determining a ground state and an excitation state. The device comprises a plurality of modules and is used for executing the method, the equipment and the storage medium comprise a processor, the method is executed through the processor, more calculation space can be saved, and universality is better.

The invention belongs to the technical field of multi-modal vehicle obstacle avoidance, and relates to a multi-modal vehicle 4D dynamic obstacle avoidance method, which comprises the following steps: taking an air-ground amphibious vehicle, namely a multi-modal vehicle as a center, constructing a plurality of concentrically increasing sphere safety domains which respectively correspond to a collision avoidance area, an early warning area and a trajectory prediction area, the space-time position and the movement track of a dynamic obstacle are monitored and predicted in real time, a three-dimensional space is divided into eight quadrants according to the flight direction based on the current course of a multi-mode vehicle, different sensing priorities and obstacle avoidance strategies are given to the front quadrant, the side quadrant and the rear quadrant, and particularly, the front quadrant, the side quadrant and the rear quadrant have different sensing priorities and obstacle avoidance strategies. Dynamically adjusting the risk level and the obstacle avoidance response according to the relative speed and the movement trend of the obstacle, and carrying out hierarchical and regional risk perception and management on the dynamic obstacle in different space directions and distance ranges; the method is scientific and reliable in principle, and is suitable for a multi-body cooperative obstacle avoidance scene in an urban low-altitude traffic environment.

The invention discloses a multi-modal speech enhancement method and device based on a deep learning model, and relates to the technical field of artificial intelligence, and the method comprises the steps: obtaining the head posture data, binaural audio signals and visual context information of a user in a virtual reality environment, coding the binaural audio signals into three-dimensional space acoustic features, and carrying out the coding of the three-dimensional space acoustic features; and extracting virtual sound source position features and lip motion features from the visual context information, inputting the features into an immersive fusion enhancement network, selectively enhancing or inhibiting acoustic features from different spatial directions, generating an enhanced audio stream, and outputting the enhanced audio stream through a binaural rendering engine. According to the method, the technical problems that in the prior art, due to the fact that multi-modal prior information cannot be effectively fused, voice enhancement lacks spatial selectivity, and an interference sound source irrelevant to vision is difficult to restrain are solved, and head posture dynamic attention and lip motion cross-modal constraint are fused; the technical effects of natural binding of auditory attention and a visual focus and effective suppression of an interference sound source are achieved.

A device (14) and a method for measuring wafers (10), comprising an optical coherence tomograph (22) configured to generate a measuring light beam (24) and direct it onto the wafer (10) via an optical system (38), a scanning device (26) configured to deflect the measuring light beam (24) in two spatial directions, a control unit (36) configured to control the scanning device (26) so that the measuring light beam (24) successively scans the surface of the wafer (10) at several measuring points, and an evaluation unit (57) configured to calculate distance values ​​and / or thickness values ​​from interference signals provided by the optical coherence tomograph (22), and a camera (80) configured to capture an image of the surface of the wafer (10), wherein the camera (80) images camera light (83).which has passed through the optical system (38) at least partially from the wafer (10).

To provide a temperature environment diagnostic device and a temperature environment diagnostic method for a factory that are capable of easily identify the locations of factors that may cause temperature changes in the installation environment of equipment in the factory.SOLUTION: A temperature environment diagnostic device comprises: a plurality of temperature sensors that acquire temperature information of machining centers; a position information acquisition unit 10 that acquires installation position information and installation direction information of the machining centers in the factory; a temperature difference change amount calculation unit 11 that uses the temperature information to calculate an amount of change in temperature difference among the temperature sensors; a spatial direction vector calculation unit 12 that uses the temperature information and the calculated amount of change in temperature difference to calculate a spatial direction vector that indicates a direction in which a factor that may cause the change in the temperature difference for the machining center is presumed to exist; and a presentation unit 13 that presents the spatial direction vector of the machining center in the factory from the calculated spatial direction vector of the machining center and the acquired installation position information and installation direction information.SELECTED DRAWING: Figure 2

The application provides a virtual-reality-based pronunciation device space direction parameter acquisition method, which only needs to perform parameter analysis on a reference pronunciation direction set, does not need to process remaining data in reference sound source data, can reduce the sound source data processing workload, can guarantee the accuracy of the sound source data to be processed, and reduces the data processing workload on the premise of reducing the sound source data to be processed. Moreover, since only the sound source data of the reference pronunciation direction set needs to be processed, the parameter recognition accuracy of the recognized pronunciation direction can be improved, so that the pronunciation direction parameter can be more accurate.

To provide a game program, a game processing method, a game system, and a game device of a ball game for performing control based on movement of an operation device by preventing an influence of a way of holding the operation device.SOLUTION: The correspondence between a direction in space and a direction with an operation device as a reference is set and updated according to a position of the operation device around a predetermined shaft on the basis of operation data at least including velocity data and angular velocity data in a ball game, a position regarding a pitch in space of the operation device is specified, a player character possessing a ball is moved when a first condition regarding at least one of acceleration data and angular velocity data in a vertical direction within space is satisfied, and shooting operation for releasing a ball to the player character is performed when a second condition regarding a position regarding a pitch within space and at least one of acceleration data and angular velocity data is satisfied.SELECTED DRAWING: Figure 30

Method for imaging at least one beam (1) of electromagnetic radiation onto an object (2), wherein the beam (1) is deflected via its beam path (3) by an optical arrangement (4) by means of an optical scanner system (5) of the optical arrangement (4), comprising at least two optical scanners (6), at least twice with a predetermined and / or predefinable variable angle, each time changing the beam path (3) of the beam (1), and the beam (1) is not subject to refraction between each deflection, the beam (1) is also imaged onto the object (2) by means of an imaging optic (7) after its deflection, and a focus area (8) of the beam (1) is placed on and / or into the object (2) by means of the imaging optic (7).by means of the scanner system (5) at least one pivoting movement of a beam segment (9) of the beam (1) exiting the scanner system (5) is generated and the pivoting movement and / or at least a rotational movement (15) about the pivot point (10) causes a movement of the focus area (8) in at least one spatial direction (X, Y) perpendicular to the optical axis of the imaging optics (7), characterized in that during the pivoting movement the pivot point (10) of the beam segment (9) lies in the beam path (3) in the imaging optics (7) and beam shaping is imposed on the beam (1) via its beam path (3) by means of a beam shaping optic (16) by the optical arrangement (4), so that a focus area (8) extended in the direction of the beam path (3) is imaged on and / or in the object (2), which extends over at least a part of the dimension of the object (2) formed in the direction of the beam path (3).

The invention relates to a patient seat for supporting a patient during a magnetic resonance examination, having a first section, a second section, a connecting element, a radio frequency unit with at least one antenna element, and a drive unit, the first section and the second section forming parts for a receiving surface of the patient, wherein the connecting element mechanically connects the first section to the second section and is designed to enable a variable relative movement between the first section and the second section, and wherein the at least one antenna element of the radio frequency unit is designed to enable a variable relative movement between the first section and the second section, the drive unit receives signals in the power and frequency range of the magnetic resonance examination, and wherein the drive unit is designed to variably move the patient seat in the spatial direction. The invention also relates to a magnetic resonance apparatus having a patient seat according to the invention.