278 results about "Scan angle" patented technology

The invention discloses an array antenna phase-only real-time beam scanning and side lobe control method based on machine learning. Firstly, array geometry, scanning angles and minor lobe indexes are set; and then, array element excitation phases meeting requirements are rapidly synthesized by using a phase-only fast Fourier FFT (Fast Fourier Transform) algorithm. Constructing a training data set by taking the scanning angle and the minor lobe index as input and the corresponding phase distribution as output; training a neural network by using the data set to obtain a real-time prediction model from initial excitation distribution to accurate excitation distribution; and according to a target expected directional diagram scanning angle and a sidelobe feature, inputting the scanning angle and the sidelobe feature into a neural network to predict and obtain an array element excitation phase so as to realize a real-time phase-only beam and sidelobe control function. Input dimensions are reduced by extracting key features of a directional diagram, data generation is accelerated by means of FFT, real-time performance and precision are both considered, and the method is suitable for fast beam scheduling tasks of various array antennas.

A half-spectrum search DOA estimation method based on characteristic value gradient jump belongs to the field of array signal processing, and comprises the following steps: modeling a received signal to obtain an array output vector; calculating a received signal covariance matrix; introducing a complex conjugate covariance matrix and a scanning source to construct a new covariance matrix, and constructing a spatial spectrum function; constructing a characteristic value gradient discrimination function, and adaptively estimating a signal source number by using the characteristic value gradient discrimination function; scanning angles are traversed by using a half-spectrum search method, and a signal direction of arrival is verified and determined by combining an MVDR algorithm according to a sharp spectrum peak formed by a spatial spectrum function. According to the method, source number priori knowledge is not needed, the source number can be identified autonomously, the problem that estimation is inaccurate under complex conditions in traditional half-spectrum search is solved, and the method has good robustness under the scene of unknown source number. According to the method, the limitation that few traditional half-spectrum search angle estimation is inaccurate is overcome, and a new thought is provided for half-spectrum search DOA estimation under the condition that the number of information sources is unknown.

The invention relates to the technical field of gas leakage detection and optical remote sensing, particularly discloses a laser natural gas leakage point positioning and imaging processing method based on an unmanned aerial vehicle, and aims to solve the problems of multiple coverage blind areas, low positioning precision and easiness in environmental interference in the prior art. The method comprises the following steps: acquiring a methane concentration integral value through a tunable diode laser absorption spectrum system carried by an unmanned aerial vehicle; constructing an initial concentration point cloud in combination with the high-precision pose and scanning angle data; performing space-time filtering and interpolation enhancement by adopting Kalman filtering and a Gaussian plume model to generate a high-confidence three-dimensional concentration field; and accurately positioning a leakage source by using a gradient rising tracking algorithm in combination with curvature and continuity constraints, and matching pipe network geographic information to perform verification alarm. According to the technical scheme, large-range, high-precision and full-automatic natural gas leakage detection and visual positioning are realized, and the signal-to-noise ratio, the anti-interference capability and the response efficiency are remarkably improved.

The invention relates to the technical field of photovoltaic power generation equipment, and particularly discloses a photovoltaic panel fault inspection device for a solar photovoltaic power station, which comprises a rack and an infrared scanner, the upper side of the rack is provided with a toothed plate for supporting the infrared scanner, and the lower side of the rack is provided with a driving assembly. The driving assembly is used for driving the rack to linearly move along the surface of the photovoltaic panel, an adjusting assembly is arranged between the toothed plate and the rack, the adjusting assembly comprises lug plates fixedly connected with the outer surface of the upper end of the rack, and a driven shaft is rotationally connected between the two sets of lug plates. By arranging the adjusting assembly, the supporting pipe drives the toothed plate and the infrared scanner to turn over with the driven shaft as the fulcrum, so that the scanning angle of the infrared scanner is adjusted, the angle between the infrared scanner and the photovoltaic panel can be maintained within a proper range, the detection precision of the photovoltaic panel can be effectively improved, and the detection efficiency of the photovoltaic panel is improved. And meanwhile, the application range of the inspection device can be effectively expanded.

A sensor comprises a housing comprising a window that extends over angular detection range and scanning-light passes therethrough, a scanning unit inside housing to scan angular detection range by emitting and receiving scanning-light with a rotating mirror to deflect scanning-light. A window monitoring unit detects pollution on window comprising at least a first and second opto-electronic components to establish a test-light path therebetween and attached to housing. The test-light path passes through the window. The window monitoring unit comprises an optical component to redirect the test-light, the opto-electronic components and optical component are arranged where a plurality of test-light paths are generated along angular detection range. The optical component is a lightguide that guides the test-light between first and second opto-electronic components and is attached to and rotate together with rotating mirror so that test-light paths of different angular positions end at at least one same second opto-electronic component.

The invention discloses a wide-angle scanning dual-frequency circularly-polarized common-aperture phased-array antenna, and mainly solves the problems that an existing common-aperture phased-array antenna is difficult to realize dual-frequency aperture multiplexing and small in scanning angle. The antenna comprises N * N rectangular small-sized common-aperture antenna arrays which are closely arranged and a feed transmission structure, and an antenna unit in each sub-array comprises a Ka wave band transmitting left-hand circularly polarized antenna and a K wave band receiving right-hand circularly polarized antenna which are formed by alternately stacking and pressing two substrates made of different materials, the two antennas with different frequency bands adopt different feed forms and different rotary arraying modes, metalized blind holes are added around the antennas, and segmented cutting grooves and gaps are formed in antenna patches. A feed transmission structure comprising a left-handed circular polarization port and a right-handed circular polarization port is correspondingly arranged below the antennas of different wavebands, and each port is connected with a phase shifter. The wide-angle scanning antenna can realize large-wide-angle scanning in a range of 60 degrees, has the advantages of miniaturization, low profile and integration of transmitting and receiving, and can be used for a low-orbit satellite communication system and multi-band fusion and intelligent networking.

The invention discloses a phased-array antenna control method and system based on impedance matching, a medium and a product, and relates to the technical field of antennas. In the method, before the phased-array antenna works, a target impedance matching parameter is calculated for active input impedance under each preset scanning angle point; establishing a target mapping relation table based on the plurality of preset scanning angle points and the corresponding target impedance matching parameters; during the working period of the phased-array antenna, receiving a target scanning angle, and calculating to obtain a corresponding beam pointing phase value for each antenna unit in the antenna array according to the target scanning angle; determining a real-time impedance matching parameter based on the target scanning angle and the target mapping relation table; and loading the beam pointing phase value to a phase shifter in the feed network, and applying a real-time impedance matching parameter to the dynamic impedance matching network, so that the input impedance of the antenna array is matched with the characteristic impedance of the feed network. By implementing the technical scheme provided by the invention, the radio frequency performance of the phased-array antenna is improved.

The invention discloses ground-to-air laser radar detection equipment, a detection method and a storage medium, and relates to the technical field of optical detection. The equipment comprises a laser transmitting module, an echo receiving module and an information processing module, the laser transmitting module comprises a laser, a scanning galvanometer unit and a scanning rotating mirror unit, the scanning galvanometer unit is used for controlling a longitudinal scanning angle, the scanning rotating mirror unit is used for controlling a transverse scanning angle, and a pulse signal transmitted by the laser sequentially passes through the scanning galvanometer unit and the scanning rotating mirror unit and then enters a to-be-measured airspace; the echo receiving module is used for receiving an echo signal of a to-be-detected airspace; and the information processing module is used for calculating return point coordinate information of the target object in the airspace to be measured according to the transmitting time of the pulse signal, the receiving time of the echo signal, the transverse scanning angle and the longitudinal scanning angle, and generating a three-dimensional point cloud image of the target object based on the return point coordinate information. The device provided by the invention is simple in structure, can scan quickly, and realizes point cloud three-dimensional imaging with a wide viewing angle.

The utility model relates to micro - nanometer technical field discloses a kind of vertical comb tooth electrostatic biaxial MEMS micro-mirror structure, comprising: first device structure layer, connecting layer, second device structure layer are stacked from bottom to top;First device structure layer includes first fixed comb tooth and second fixed comb tooth;Second device structure layer includes galvanometer frame and its two sides first torsion beam;First movable comb tooth is provided on first torsion beam;Galvanometer frame is annular;Galvanometer frame inside is provided with mirror body and its two sides second torsion beam;Second movable comb tooth is provided on second torsion beam;First torsion beam, galvanometer frame and second torsion beam are integral structure and electrically connected;First fixed comb tooth and first movable comb tooth are misaligned and correspond to set, second fixed comb tooth and second movable comb tooth are misaligned and correspond to set.The utility model can increase driving force and deflection angle, and then increase operating frequency and scanning angle, while reducing excitation response time.

A system for forming a glass ribbon is provided, comprising a glass molded body for forming glass and a first laser module. The glass molded body is configured to allow molten glass to flow along the surface of the glass molded body to form a glass ribbon. The glass ribbon defines a first surface having a width extending from a first edge to a second edge. The first laser module is configured to generate a first laser beam scanned at least partially along the width of the first surface within a first scanning angle range to apply heat to assist in controlling the thickness of the glass ribbon. The direction of the first laser beam facing the first center within the first scanning angle range strikes the first surface at a first center strike angle that is not perpendicular to the first surface.

The present invention relates to the field of large-field-of-view scenes. Provided is a nonlinear optical large-field-of-view imaging system, comprising a light source system, a laser scanning system and a laser detection system, wherein the light source system is configured to emit laser; the laser scanning system comprises a focusing lens and a galvanometer, wherein the galvanometer is located between the focusing lens and a sample to be detected, the focusing lens is configured to focus the laser on said sample, and the galvanometer vibrates according to a preset scanning angle so as to realize scanning of a laser focus on said sample; and the laser detection system comprises a compound-eye collection structure and a detector, wherein the compound-eye collection structure comprises a plurality of individual lenses which are closely arranged, optical signals generated by said sample are incident on the compound-eye collection structure, and the detector is configured to detect the optical signals collected by the compound-eye collection structure. The present invention can expand a laser scanning imaging range, can ensure that a laser beam always propagates along the optical axis of the focusing lens, and can comprehensively collect signals excited across the entire scanning field of view, thereby improving the efficiency of large-field-of-view imaging and increasing the signal intensity.

The application relates to the technical field of surveying and mapping, and discloses a mine geological surveying and mapping system and method based on artificial intelligence, which comprises the following steps: substituting a sub-mine geological map of each to-be-surveyed mine sub-region into a twin neural network model to determine the geological type of each to-be-surveyed mine sub-region, comparing the geological type with a historical geological type, judging whether the geological type is changed, establishing a geological mark for the corresponding to-be-surveyed mine sub-region according to the geological condition of the target geological type, determining a radar scanning angle based on the sequence of the geological mark, determining whether to adjust the radar scanning angle based on a historical scanning set, when radar scanning is carried out on a changed geological mark or a multi-source geological mark, determining a compensation scheme of a radar reflection signal according to a signal-to-noise ratio, and completing the surveying and mapping of each to-be-surveyed mine sub-region based on the target radar scanning angle or the compensation scheme of the radar reflection signal, so that the stability and reliability of mine geological surveying and mapping are ensured.

This application provides a lightweight imaging probe and imaging device using a superlens, relating to the field of nonlinear optical imaging. By employing a split structure, a miniaturized imaging probe is achieved. During imaging, the imaging probe can be fixedly connected to the object being imaged. Excitation light is used to induce nonlinear optical effects within the object, thereby acquiring optical signals reflecting the internal structure of the object. Specifically, this application ensures that the laser is precisely focused on a specific position within the object corresponding to the scanning angle through a coordinated optical path design of the scanning galvanometer, scanning lens, and objective lens. This effectively triggers nonlinear optical effects while ensuring efficient acquisition of optical signals, thus providing a reliable technical foundation for high-resolution internal imaging. Furthermore, this application uses a superlens structure to construct the objective lens, avoiding the weight and weight associated with traditional optical objectives, thereby achieving a lightweight imaging probe, reducing the impact on the object being imaged, and obtaining more accurate images.

The present application belongs to the field of CT tomographic reconstruction technology and artificial intelligence, and discloses a limited-angle CT reconstruction artifact suppression method based on a multi-domain feature fusion network. In view of the problem that the reconstruction result of traditional CT scanning under limited-angle conditions is prone to artifacts and structural distortion, thereby affecting the image quality and defect detection accuracy, the present application constructs a multi-domain feature fusion artifact suppression network, takes the limited-angle reconstruction result as input, and realizes artifact suppression and detail recovery through the synergistic effect of the encoder part, the decoder part, the feature enhancement part and the feature conversion part. The present application can obtain high-quality tomographic images under limited-angle conditions, effectively reduces the scanning angle and time of industrial CT detection, improves the imaging clarity and reliability without increasing the radiation dose, is suitable for industrial detection of complex structure workpieces, and has important industrial application value.

The application provides an attendance management method and device, a terminal and a medium. The method comprises the following steps: acquiring multi-modal identity data of an attendance staff, environment light intensity data where the attendance staff is located, and two-dimensional code display data, and acquiring historical attendance data. The multi-modal identity data comprises face image data, infrared living body detection data, and electronic access code data. The two-dimensional code display data comprises two-dimensional code image definition and two-dimensional code scanning angle. A modal consistency evaluation value is obtained according to the multi-modal identity data, the face image data, the electronic access code data, the environment light intensity, the two-dimensional code image definition, and the two-dimensional code scanning angle. A face similarity judgment value is obtained according to the face image data, the infrared living body detection data, and the historical attendance data. An attendance result is determined according to the modal consistency evaluation value and the face similarity judgment value. The real attendance situation of the staff is comprehensively considered.

The application discloses a scanning radiation source positioning method based on semi-positive relaxation, and comprises the following steps: firstly, a positioning geometric model based on a scanning angle and a time difference in a multi-station scene is constructed; secondly, an auxiliary variable is introduced to construct a convex optimization positioning solving framework, and an original non-convex observation model is equivalently converted into a convex optimization problem; finally, a convergence domain of the positioning problem after semi-positive relaxation is geometrically analyzed, the feasible domain expansion caused by the semi-positive relaxation is reduced, and the convex optimization problem is efficiently solved by using an optimization toolbox, so that accurate positioning of a static scanning radiation source is realized.

The utility model relates to a measuring tool and a measuring device, and the measuring tool is used for measuring the aperture and the hole location degree, and comprises a measuring ball which is used for extending into a to-be-measured hole of a metal piece; the mounting part is used for being connected with the surface of the metal piece in a magnetic attraction mode, and the mounting part is mounted on the measuring ball in a position-adjustable mode in the axial direction of the mounting part. When the measuring ball and the to-be-measured hole are in a tangent state, the position of the mounting part on the measuring ball is adjusted, so that the mounting part is adsorbed on the surface of the metal piece, the measuring tool is fixed on the metal piece, and the stability of the measuring tool is improved. The sphere structure of the measuring sphere is not limited by a scanning angle, so that scanning of a scanner of the measuring device is facilitated, the integrity and precision of acquired data can be improved, the scanner can conveniently acquire related data of the aperture and the hole position degree of the to-be-measured hole at the same time, and the measuring efficiency of the measuring device can be improved. The sphere structure can be suitable for to-be-measured holes of various sizes, and the adaptability and compatibility of the measuring tool are improved.

The invention relates to a simulation scanning method for guiding the routing angle of adjacent layers, and the method comprises the steps: building a transmission line model containing two pairs of differential lines with the vertical projections of the adjacent layers coinciding, setting a center coordinate, controlling the two pairs of differential lines to rotate reversely at the same value, scanning the angle, obtaining crosstalk data of different angles through simulation, and improving the amplitude. Therefore, the wiring angle design of adjacent layers is guided. According to the method, two pairs of differential lines of adjacent layers are set as reverse same-value rotation variables, the angle difference and a single variable are associated, control is simplified, and traceability is achieved; a projection center is used as a rotation reference, so that accurate control and reliable simulation are guaranteed; crosstalk data are obtained through angle scanning, quantization limitation is broken through, and efficiency is improved; the data shows that the difference is improved, the optimal angle is selected by combining the assistance with the space limitation, crosstalk exceeding or space waste is avoided, and experience dependence is got rid of.

To provide an information processing device capable of suitably outputting a distance measurement result for an object existing within a measurement range.SOLUTION: A signal processing unit (2) of a rider unit (100) generates, on the basis of a segment signal (Sseg) output from a core unit (1), a polar coordinate space frame (Fp) indicating a scan angle indicating the irradiation direction of a laser beam, a target distance (Ltag), and the received light intensity of the laser beam, converts the frame into a rectangular coordinate space frame (Fo), and outputs the frame to a display control unit (3). For the illumination direction in which the segment signal Sseg output from the core unit 1 indicates the received light intensity equal to or higher than the threshold value Apth, the signal processing unit 2 generates the measurement point information Ip based on the segment signal Sseg and outputs the measurement point information Ip to the point cloud processing unit 5.SELECTED DRAWING: Figure 4

The invention discloses an X-ray emission regulation and control mechanism for three-dimensional reconstruction, a double suspension type DR and a use method, and relates to the technical field of medical imaging equipment, the X-ray emission regulation and control mechanism comprises an X-ray emission mechanism, a control box, a rotating mechanism, a lifting mechanism and a linkage mechanism, the X-ray emission mechanism is used for generating and emitting X-rays; the control box is electrically connected with the X-ray emission mechanism and is used for receiving an external instruction and regulating and controlling emission parameters of the X-rays; the rotating mechanism is used for bearing the X-ray emission mechanism and driving the X-ray emission mechanism to rotate so as to realize multi-angle X-ray emission; the lifting mechanism is used for bearing the control box and driving the control box to lift; the linkage mechanism is in transmission connection with the rotating mechanism and the lifting mechanism, so that when the rotating mechanism drives the X-ray emission mechanism to rotate, the linkage mechanism synchronously drives the lifting mechanism to drive the control box to ascend and descend, the rotating path of the X-ray emission mechanism is avoided, the equipment size is effectively reduced, and the scanning angle range and the imaging quality of three-dimensional reconstruction are improved.

The application discloses a kind of based on rectangular waveguide lens terahertz two-dimensional multi-beam antenna, including two-dimensional feed array, rectangular metal cavity and rectangular waveguide lens;Two-dimensional feed array includes first metal substrate, first metal substrate is provided with several rectangular waveguide feed units, each rectangular waveguide feed unit is connected with feed port;Rectangular waveguide lens includes second metal substrate, second metal substrate is provided with several rectangular waveguide phase shift units, and the rectangular waveguide phase shift units of adjacent row are mutually staggered distribution.The application is realized two-dimensional multi-beam scanning by the way of two-dimensional feed array bias feed, with the advantages of two-dimensional scanning angle and gain can be arbitrarily designed, large bandwidth advantage.The application adopts rectangular waveguide array to form metal lens, with the advantages of low high-frequency loss, small size;At the same time, through waveguide array staggered and period compression, mirror image grating lobe is eliminated, with the advantages of low grating lobe, large scanning angle.

This invention discloses a radar target angle measurement method under main lobe interference based on a joint air-pole cancellation algorithm. The implementation steps are as follows: receiving the echo signal from a dual-polarized radar antenna array; estimating the autocorrelation matrix of the auxiliary antenna using the echo signal; performing multi-directional beamforming on the main antenna echo signal, calculating the cross-correlation matrix of the main and auxiliary antennas using the beamforming results, and calculating adaptive weights using the minimum mean square error criterion; calculating the joint air-pole cancellation output using the adaptive weights, and using the scanning angle corresponding to the maximum magnitude in the joint air-pole cancellation output as the target angle estimate. The angle measurement method designed in this invention significantly improves the accuracy of target angle estimation while maintaining low computational load under main lobe interference conditions, and has high engineering application value.

The invention discloses a laser measurement system for the size of a rubber sealing element, and relates to the technical field of laser measurement, and the system comprises a signal collection module S11 which is used for obtaining distance measurement signal data collected by a laser distance measurement device in a continuous measurement process on the surface of the rubber sealing element, the ranging signal data comprises a scanning angle, laser emission time, laser echo receiving time and laser echo intensity; the stable screening module S12 is used for extracting signal segments with continuous angles and emission time intervals lower than a preset interval value according to scanning angles and laser emission time in the ranging signal data, and marking the signal segments as stable scanning segments; according to the method, through synchronous acquisition of distance measurement signal data, stable screening of credible signal fragments and high-precision fitting of radial dimension data, accurate reconstruction of the target contour dimension of the rubber sealing element and improvement of dimension consistency judgment capability are realized.

The application relates to the technical field of photovoltaic power generation equipment, and particularly discloses a fault inspection device for a photovoltaic panel of a solar photovoltaic power station, which comprises a rack and an infrared scanner, the upper side of the rack is provided with a toothed plate for supporting the infrared scanner, the lower side of the rack is provided with a driving assembly, the driving assembly is used for driving the rack to move linearly along the surface of the photovoltaic panel, an adjusting assembly is arranged between the toothed plate and the rack, the adjusting assembly comprises an ear plate fixedly connected to the outer surface of the upper end of the rack, and a passive shaft is rotatably connected between the two groups of ear plates. Through the adjusting assembly, the toothed plate and the infrared scanner are turned over around the passive shaft driven by the supporting pipe, so that the scanning angle of the infrared scanner is adjusted, the angle between the infrared scanner and the photovoltaic panel is maintained within a proper range, the detection precision of the photovoltaic panel is effectively improved, and the application range of the inspection device is effectively widened.

The application discloses a straight line feature extraction method and device, equipment and a storage medium, and relates to the technical field of mobile robots. The technical scheme provided by the application comprises the following steps: extracting candidate point clouds from a laser point cloud according to the curvature value of each scanning point of the laser point cloud, and sorting the scanning points of the candidate point clouds according to corresponding scanning angles to obtain ordered candidate point clouds; extracting a preset number of continuous scanning points from the ordered candidate point clouds as candidate line segment point clouds, and determining candidate line segment point clouds that satisfy a first preset collinear condition as candidate straight line point clouds; fusing adjacent candidate straight line point clouds that satisfy a second preset collinear condition into the same straight line point cloud, and dividing adjacent candidate straight line point clouds that do not satisfy the second preset collinear condition into different straight line point clouds; determining straight line point clouds that satisfy a third preset collinear condition, and converting the straight line point clouds that satisfy the third preset collinear condition into discrete straight line feature points.

A spectral domain optical coherence tomography (OCT) system utilizes an electrowetting prism having four isolated electrodes and configured to deflect a light beam according to an actuating control signal applied to the electrodes. The control signal causes the light beam to laterally scan over a sample. The light beam is produced by a broad bandwidth laser and light from the sample and a reference path is provided to a spectrometer for analysis. The light source may be an all-normal-dispersion fiber laser seeding a gain-managed nonlinear fiber amplifier. The electrowetting prism is capable of scanning up to ±6°. The system is low power and operates at kHz speed.

This invention relates to the field of optical waveguide technology, specifically providing a method for driving a liquid crystal waveguide beam scanner. The method involves calculating the director of liquid crystal molecules under an applied electric field, calculating the dielectric tensor based on the director, obtaining the effective refractive index of the optical waveguide based on the dielectric tensor, calculating the scanning angle under different applied electric fields, establishing the dynamic relationship between the scanning angle and voltage, and designing a driving voltage waveform accordingly to achieve a preset beam scanning process. This invention enables precise and predictable beam scanning, fulfilling specific application requirements.

The application discloses a laser radar target speed measuring method based on a galvanometer circular ring light scanning, which comprises the following steps: a pulse laser emits pulse light; a synchronous generator reduces the frequency of the pulse laser; a scanning galvanometer scans the circular ring light; a servo turntable feeds back the angle between a local coordinate system and a global coordinate system of the light axis; and the circular ring light detects the target and reverses the target azimuth information. The application combines the method of emitting pulse laser and scanning the circular ring light by the galvanometer, uses the distance information of the target echo at different time and the time information of the target in the pulse interval, reverses the target coordinate information, and greatly improves the detection accuracy. Meanwhile, the target speed is measured by the time information difference between the echo signals and the azimuth information of the target on the circular ring at different time, effectively solves the problem that the feedback angle error is large due to the influence of the installation and adjustment error, the galvanometer gravity and the like when the scanning angle is fed back by the traditional galvanometer, and has a significant significance for improving the inversion target positioning precision and speed precision.

The application discloses a fault scanning control method and device, a fault scanning equipment and a storage medium. The method comprises the following steps: identifying a key anatomical structure of an initial projection image based on a pre-trained trajectory planning model, generating a probability distribution map, determining a sparse scanning angle sequence and corresponding first scanning parameters, densely sampling and appropriately increasing a radiation dose in a high-weight area, and sparsely sampling and reducing a dose in a low-weight area; controlling the fault scanning equipment to perform scanning, obtaining first projection data and reconstructing the first projection data into a sparse reconstruction image; performing multi-modal fusion and scoring on the sparse reconstruction image and the current scanning parameters through an image quality evaluation model, adaptively optimizing scanning instructions according to the probability distribution map, a fusion feature vector, an image quality score, an equipment state and historical action data, generating second scanning parameters, making the scanning trajectory more continuous and smooth through an artificial intelligence technology, and realizing regional adaptive regulation and control of angles, doses and paths, so that the imaging resolution can be improved.

A near-eye system includes a display waveguide, an eye-tracking waveguide, and a scanner. The display waveguide is configured to present a virtual image to an eyebox region. The eye-tracking waveguide is configured to illuminate the eyebox region with illumination light. The scanner is configured to be driven to varying image scan angles to direct image light to the display waveguide to present the virtual image to the eyebox region. The scanner is also configured to be driven to one or more alignment scan angles to sense an alignment between the display waveguide and the eye-tracking waveguide.