55 results about "Position resolution" patented technology

An illumination optic (11) for projection lithography has a transmission facet mirror (6), an illumination specification facet mirror (7), and a monitoring device (28). The latter has at least one spatially resolving monitoring sensor (29) and a satellite facet (30), which belongs to the transmission facet mirror (6) and is each assigned to exactly one monitoring transmission facet (21). The satellite facet (30) is oriented such that monitoring light (3) from a monitoring light source (2) is guided via the satellite facet (30) and a monitoring illumination control facet (25), which is assigned to the monitoring transmission facet (219) via an illumination channel (27), along a monitoring light channel (31) to the monitoring sensor (29). This results in an illumination optic in which a tilting of illumination control facets of an illumination control facet mirror can be effectively monitored.

The invention provides a calibration method and device for beam position measurement of a linear accelerator, and the device comprises a reference signal processing module which obtains real-time temperature and humidity values, receives multi-channel beams and reference signals, adjusts a trigger signal reflecting the time delay between the reference signals and the beam signals, and outputs a recombination signal of each beam and reference signal; a digital signal processing module of the beam signal processing electronics part comprises a sampling circuit for sampling to obtain a digital signal; the amplitude calculation unit is used for extracting the amplitudes of the beam and the reference signal; and the position calculation unit is used for solving the optimal amplitude change coefficient of the reference signal according to the real-time temperature and humidity values, correcting the amplitude of the reference signal by using the coefficient, calibrating the amplitude of the beam signal by using the correction result, and finally obtaining the beam position. According to the calibration equipment, the influence of channel inconsistency and temperature drift and long drift on position measurement can be effectively suppressed, and the position resolution and long-term operation stability of beam measurement are improved.

The invention provides a target position resolving method and device based on a distributed single-phase limited laser detector. According to the method, the structural form of a traditional four-quadrant laser detector is changed, four quadrants are separated and placed in four directions respectively, and the method has the advantages of being easy to install, capable of being transplanted and low in cost. On the basis of not changing the appearance and the structure of the original system, the complexity of a software processing algorithm is increased, so that a target position resolving unit is conveniently added; through verification of a prototype, a set of complete solution is provided. The technology has wide application prospects and huge market requirements.

The invention discloses a shielded environment muon navigation method. The method comprises the following steps: deploying a reference detector array and a receiving detector; collecting a plurality of pieces of muon track information by using an accidental coincidence event detected by the reference detector array and the receiving detector; performing non-repeated pairwise combination on all the collected muon track information to form a plurality of combination pairs, establishing equation sets about muon track distances, then integrating all the equation sets, and establishing overdetermined equation sets about all the muon track distances; distributing weights of overdetermined equations according to the position resolution and the angle resolution of the reference detector corresponding to the collected muon trajectory information, and establishing weighted overdetermined equations about all muon trajectory distances; and based on the solution of the weighted overdetermined equation set, obtaining the final position coordinates of the receiving detector, thereby carrying out the positioning and navigation of the navigation terminal. According to the invention, the positioning precision of the vector muon navigation system can be effectively improved.

The invention relates to the technical field of nuclear physics, particle physics and nuclear celestial body physics experiments, in particular to a position-sensitive flight time detector and a use method thereof. The flight time detector comprises a detector field cage which is provided with an emission film used for generating secondary electrons and a high-voltage wire mesh used for providing an electric field required for guiding the secondary electrons; the delay line reading plates are arranged above the emission film in parallel at intervals; the conical anode readout is arranged below the emission film in parallel at intervals; the delay line read-out plate and the conical anode read-out plate are respectively provided with an MCP assembly on one side facing the emission film. The MCP assembly cooperates with the delay line readout plate to provide location information, and the MCP assembly cooperates with the tapered anode readout to provide time information. According to the flight time detector, a position reading part and a time reading part are combined, time resolution and position resolution can be independently optimized, and the structure can be compact.

The invention provides a high-gain 4H-SiC ultraviolet position sensitive detector and a preparation method thereof, and relates to the technical field of semiconductor photoelectric detection. A high-gain 4H-SiC ultraviolet position sensitive detector is realized through a first n-type 4H-SiC layer, a p-type 4H-SiC layer and a second n-type 4H-SiC layer, namely, an n +-p-n-structure, and a wide bandgap semiconductor material 4H-SiC is used as a device main body for migration of carriers irradiated by light. The material has the outstanding characteristics of large forbidden band width, high critical displacement energy, high thermal conductivity coefficient, good chemical stability and the like. According to the device structure, by introducing an internal gain mechanism, the photoelectric conversion efficiency and the position resolution ratio under the weak light condition are remarkably improved, and the limitations that an existing silicon-based PSD is large in background noise, and performance attenuation or damage is prone to occurring under the extreme environments of high temperature, intense radiation and the like are effectively overcome.

The application discloses a kind of muon track detector design and performance evaluation method, it is related to the field of detector structure design;Two kinds of scintillator array layout scheme for muon track detector structure design are presented, one is based on the staggered layout of right triangular prism μ The track detector structure of son, can reflect better position resolution performance, especially after combining μ Son energy screening, can significantly improve the position resolution performance of μ Son detector.And the position resolution performance of the μ The track detector structure based on the staggered layout of diamond column is better when the comprehensive performance of broad spectrum energy μ Son is incident, the detection area is larger, and the number of readout channels can be reduced to reduce cost.The present application is conducive to improving the comprehensive performance of μ Son track detector, increasing the detection area, reducing the position resolution error, reducing the number of channels, reducing the cost and the like.Through the present application, this scheme and performance evaluation method can be widely applied to the detector design and performance evaluation in the field of μ Son imaging, μ Son track detection.

The present invention provides a calibration method and device for linear accelerator beam position measurement, including a reference signal processing module, which obtains real-time temperature and humidity values, receives multi-channel beam and reference signals, adjusts the trigger signal reflecting the delay between the reference and beam signals, and outputs the recombined signal of each beam and reference signal; a beam signal processing electronics part, whose digital signal processing module includes a sampling circuit to obtain a digital signal by sampling; an amplitude calculation unit, which extracts the amplitude of the beam and reference signals; a position calculation unit, which obtains the reference signal optimal amplitude variation coefficient according to the real-time temperature and humidity values, uses the coefficient to correct the reference signal amplitude, and uses the correction result to calibrate the beam signal amplitude, and finally obtains the beam position. The calibration device of the present invention can effectively suppress the influence of channel inconsistency and temperature drift and long drift on position measurement, and improve the position resolution and long-term operation stability of beam measurement.

The invention belongs to the field of aero-engine health monitoring and fault diagnosis, relates to a surge monitoring technology, and provides a multi-parameter-based aero-engine surge identification method, which comprises the following steps of: acquiring an asynchronous vibration amplitude of a blade tip of a fan blade, a pulsation coefficient of an outlet of a gas compressor and a dynamic change rate of a fan support axial load; the three parameters are compared with corresponding threshold values respectively, and the surge position is judged according to specific logic: when the compressor outlet pulsation coefficient is not lower than the threshold value, if the axial load change rate or the vibration amplitude exceeds the limit, the compressor end surge is judged; and when the pulsating pressure is lower than the threshold value, if the change rate of the axial load and the vibration amplitude exceed the limits at the same time, fan end surge is judged. According to the method, single signal misjudgment is effectively avoided through multi-parameter fusion and surge position judgment logic, the surge recognition accuracy and the position resolution capability are remarkably improved, and the method is particularly suitable for complete machine level real-time monitoring.

The invention relates to the technical field of semiconductor device photoelectric detection, in particular to a silicon carbide-based ultraviolet position sensitive detector based on a thin Schottky metal material and a preparation method thereof, and the silicon carbide-based ultraviolet position sensitive detector comprises an N-type ohmic contact lower electrode, an N-type silicon carbide substrate and an N-type silicon carbide low-doped epitaxial layer which are sequentially connected from bottom to top; the N-type silicon carbide low-doped epitaxial layer is provided with a Schottky metal film with the thickness lower than 4 nm, and the Schottky metal film is used for forming a photosensitive area. A plurality of metal conductive electrodes are arranged at the edge of the top of the Schottky metal film, are electrically connected with the Schottky metal film and are used for leading out position-related electric signals. The problems that an existing pn junction type position sensitive detector is limited in response speed and insufficient in time resolution are effectively solved, and the detection efficiency and the position resolution capacity of the detector in the vacuum ultraviolet band are effectively improved.

An illustrative multi-view 3D positioning system assigns a respective 3D position estimate, with respect to a 3D space, to each of a plurality of detected instance datasets corresponding to objects present within the 3D space. Based on the 3D position estimates, the multi-view 3D positioning system sorts the plurality of detected instance datasets into a plurality of groupings corresponding to the objects so that each detected instance dataset is grouped together with other detected instance datasets corresponding to a same object. The multi-view 3D positioning system then determines a respective 3D position resolution, with respect to the 3D space, for each of the plurality of objects. These 3D position resolutions are determined based on the plurality of groupings of detected instance datasets and represent, with greater accuracy than the 3D position estimates, 3D positions of the objects within the 3D space. Corresponding methods and systems are also disclosed.

A wireless channel type detection method and apparatus. The type of a channel can be identified on the basis of at least one of carrier phase slope consistency, a ratio of phase differences of carrier phases at different times, and a carrier path loss, i.e., the type of the channel is determined to be LOS transmission or NLOS transmission. Thus, the precision of positioning resolution can be effectively improved.

The invention discloses a channel gain correction method and system for a multi-channel detector, and relates to the technical field of nuclear radiation detection. The method comprises the following steps: collecting original event data by using a multi-channel detector; energy of all channels triggered by the same event is obtained through action time judgment; calculating the total energy value of each event through the energy of each channel to which each event belongs, counting all events, constructing the total energy spectrum of the channel events, setting an energy screening window according to the position of a photoelectric peak in the total energy spectrum, and reserving the events in the energy screening window as an effective event set; performing channel gain coefficient correction by using an iterative algorithm, and monitoring the energy resolution in real time until convergence; and performing channel-level gain compensation on all original event data by using the finally obtained gain coefficient, and outputting and displaying a corrected energy spectrum and a gain distribution diagram. After gain correction, the energy resolution and the position resolution of the detector can be remarkably improved, and the imaging quality and the quantitative accuracy of the system are improved.

The invention provides a cesium iodide crystal detector packaging structure and method, and belongs to the technical field of high-energy physical detectors. The cesium iodide crystal detector packaging structure comprises two groups of optical fiber modules, two groups of optical fiber readout SiPM, two groups of crystal readout SiPM and cesium iodide crystals, the two groups of optical fiber modules are tightly attached to the upper surface and the lower surface of the cesium iodide crystal respectively and are orthogonally arranged; the two groups of optical fiber reading SiPMs are respectively arranged on the two groups of optical fiber modules and are used for reading photons propagating to the tail ends of the optical fibers; the two groups of crystal read-out SiPMs are respectively clung to the two side surfaces of the cesium iodide crystal, are orthogonally arranged and are used for reading out photons propagating to the side surfaces of the cesium iodide crystal. According to the invention, photon number measurement can be provided while position resolution is measured, and the energy resolution capability is improved; the structure optimization degree is high, and substance interference does not exist on an incident particle path; the structure is convenient to install, corresponding operation is adopted, and detector packaging can be effectively completed.

The present disclosure belongs to the technical field of neutron detection, and it relates to a structure for slow neutron detection and a method for energy spectrum measurement of slow neutrons, wherein the structure for slow neutron detection comprises: a shielding barrel, which is configured as square with an opening; and a detector unit, which is a slow neutron detector with position resolution function, wherein the detector unit is completely wrapped in the shielding barrel, and the detector unit is placed close to one of the sides of the shielding barrel that is perpendicular to the open side of the shielding barrel. When the structure for slow neutron detection moves at a set speed, the incident energy spectrum of slow neutrons can be inversely extrapolated on the basis of the number of slow neutrons at different depths.

The application discloses a novel ray detector, characterized in that the novel ray detector comprises a Cerenkov radiation material window, a photocathode surface plated on a light exit surface of the Cerenkov radiation material window, a microchannel plate and a readout circuit board; wherein the Cerenkov radiation material window is a glass optical fiber panel, used for receiving incident gamma rays and inputting Cerenkov light generated by the incident gamma rays into a fiber core to the photocathode surface; the photocathode surface is used for converting the Cerenkov light into photoelectrons and transmitting the photoelectrons to the microchannel plate through a vacuum electric field; and the microchannel plate is used for inputting the received photoelectrons into the readout circuit board after amplification by multiplication. The application can realize better position resolution.

The invention provides a method for rapidly forming and processing a V-shaped channel micropore array optical element on a single transparent glass substrate and the prepared micropore array optical element, and the method comprises the following steps: carrying out synchronous laser drilling on a vertically placed glass sheet by adopting inclined double laser processing heads positioned on the same horizontal base line by utilizing a laser-induced etching technology; and then carrying out wet etching treatment, and rapidly forming and processing the V-shaped channel micropore array optical element on a single transparent glass substrate. The structure of the V-shaped channel is controlled by independently regulating and controlling the inclined angle, the wire length, the energy and the focus processing parameters of laser emitted by each laser processing head; the problems that a traditional straight-channel micro-channel plate is large in positive ion feedback noise, multiple stacked V-shaped and Z-shaped micro-channel plates are poor in position resolution time response performance, and a hot-melt pressure bending micro-channel plate is poor in curvature consistency are solved, and the micro-channel plate can be applied to the field of photoelectric detection imaging requiring low ion feedback, ultrahigh gain and fast time response.

An information handling system mouse includes a position sensor that detects movement of the mouse and reports the movement to generate cursor movement at plural displays interfaced with the information handling system. The mouse automatically changes between a first position resolution and a second position resolution to generate cursor movement based upon a resolution of a display at which the cursor is presented. As the cursor moves between each of plural displays in response to mouse movement, the mouse automatically changes the position resolution so that cursor movement relative to the mouse movement remains consistent even where the cursor is presented at displays having different display resolutions.

The application relates to a method for processing muon detection data of a triangular prism scintillator. S1: obtaining uncorrected energy deposition information and uncorrected hit position of each muon event in each layer detection unit; S2: based on the actual structure parameters of the detector, performing geometric correction on the traditional centroid algorithm; S3: based on the statistical relationship between the energy deposition of the muon in the scintillator and the track length, establishing a signal channel gain coefficient model, and correcting the energy response of each detection channel; S4: based on the fitting results of the muon track length and the energy of each channel, determining the energy consistency standard, and performing rejection processing on the muon events determined as abnormal; S5: performing muon track reconstruction and imaging, evaluating the position resolution of the detector, and if the convergence condition is reached, ending, otherwise returning to S2 for iteration. The technical scheme can improve the muon track reconstruction accuracy and imaging quality through geometric structure correction, energy correction and abnormal energy event screening.

This invention discloses a UAV 3D coverage path planning method based on Monte Carlo tree search. The method uniformly samples the search space and angles according to positional and angular resolutions, eliminating viewpoints located inside the model. Viewpoints that are too close or too far from the model are eliminated based on safe distance and sensor detection distance. The visible point cloud sequence of the viewpoint is calculated based on the angle between the viewpoint camera's line of sight and the point cloud point normal vector, and unqualified viewpoints are then eliminated accordingly. A sub-viewpoint sequence is generated for each viewpoint based on distance relationships. Then, for the current viewpoint, expansion, simulation, backtracking, and selection are performed according to the Monte Carlo tree search concept until the coverage meets the requirements. This invention ensures the detection quality of UAVs when detecting large 3D structures, while reducing redundancy in the full-coverage path, improving the detection efficiency and energy utilization of the UAV detection process. Furthermore, its viewpoint generation process ensures good algorithm flexibility and robustness.

The invention is entitled "Systems and methods for assisted navigation using distributed avionics processing." The invention discloses methods, systems, and non-transitory computer-readable media for distributed vehicle navigation processing for a vehicle. For example, the method can include, by the vehicle: obtaining reference data from one or a combination of an imaging system, an antenna system, and / or a radar system of the vehicle; in response to obtaining the reference data, determining whether a GNSS signal is below a threshold; and in response to determining that the GNSS signal is below the threshold, transmitting a navigation assistance request message including the reference data to an edge node or a cloud node. By the edge node or the cloud node: in response to receiving the navigation assistance request message from the vehicle, performing a position resolution process to determine and transmit a position of the vehicle by one or more functions. By the vehicle: performing a navigation control process based on the determined position.

The application relates to a positioning system, a positioning method, a navigation method, a storage medium and a computer program product. The positioning system comprises a base station, a core network, a navigation relay server and a position resolution calculation server; the base station is in communication connection with the core network; the navigation relay server is in communication connection with the base station, the base station is in communication connection with the position resolution calculation server, the position resolution calculation server is in communication connection with the navigation relay server; when a user equipment is attached to a communication network, the core network allocates a first IP address for the user equipment through the base station, the base station sends orthogonal data of a reference signal and a user identifier to the position resolution calculation server, the reference signal is used for positioning the position of the user equipment, and the user identifier comprises the first IP address; and the position resolution calculation server obtains coordinate information corresponding to the first IP address based on the orthogonal data. The technical scheme of the application can realize universal and accurate positioning and navigation in an indoor scene, and can avoid invading the privacy of customers.

The data fusion range finder comprises a data fusion module, a laser range finding module, a photoelectric detector, a millimeter wave range finding module and a 4G communication module.The data fusion range finder has the advantages of being high in light interference resistance and high in range finding data reliability, and the advantages of laser range finding and millimeter wave range finding can be brought into play; the defect that laser ranging is greatly interfered by external light is overcome, and the defect that millimeter wave ranging is low in ranging position resolution is overcome.

Test device (1) for an injector (4), comprising a measuring chamber (2) which can be pressurized with a test gas (3), wherein the wall (2a) of the measuring chamber (2) has a receptacle (2b) for the injector (4) so ​​that it can inject a gas (5) into the measuring chamber (2), further comprising means (6) for directly or indirectly measuring the pressure p in the measuring chamber (2) and means (7) for directly or indirectly measuring the temperature T in the measuring chamber (2), characterized in that it additionally includes an optical measuring device (8, 9, 10) for determining the two- or three-dimensional spatially dependent distribution (n(x,y) or n(x,y,z)) of the refractive index n, and / or a gradient (Vn(x,y) or Vn(x,y,z)) of this distribution (n(x,y) or n(x,y,z)), in at least one two- or three-dimensional subregion. (2c) the measuring chamber (2) is provided, and the optical measuring device (8, 9,10) comprises a light source (8) and a spatially resolved detector (9) and at least one beam path (11) is provided from the light source (8) through the measuring chamber (2) to the spatially resolved detector (9), wherein the spatially resolved detector (9) records an image in the manner of schlieren photography.

This invention discloses a channel gain correction method and system for a multi-channel detector, relating to the field of nuclear radiation detection technology. The method includes: acquiring raw event data using a multi-channel detector; determining the energy of all channels triggered by the same event based on the action time; calculating the total energy value for each event using the energy of its respective channels, statistically analyzing all events to construct the total energy spectrum of the channel events, and setting an energy filtering window based on the position of the photoelectric peak in the total energy spectrum, retaining events within the energy filtering window as the valid event set; using an iterative algorithm to correct the channel gain coefficients, and monitoring the energy resolution in real time until convergence; applying the finally obtained gain coefficients to perform channel-level gain compensation on all raw event data, and outputting and displaying the corrected energy spectrum and gain distribution map. Gain correction can significantly improve the energy resolution and position resolution of the detector, enhancing the system's imaging quality and quantitative accuracy.

The application discloses a towed array passive positioning method based on wideband matrix filtering, calculates a sound field propagation matrix by using a two-dimensional parabolic equation model, obtains different distance sound source-receiver system propagation matrices through matrix multiplication operation, extracts matrix coefficients from different distance system propagation matrices according to sound source depth and horizontal array element positions, and forms a new sparse system propagation matrix. The sparse system propagation matrix is processed to form a wideband matrix filter set, finally, the horizontal array receiving signal is processed by using the wideband matrix filter set, energy normalization is performed on different distance processing results, a wideband distance-depth ambiguity diagram is formed, and target depth and distance estimation results are obtained. The application can effectively improve the target position resolution of the towed array wideband signal passive positioning, reduce the sidelobe intensity in the two-dimensional ambiguity diagram, and greatly reduce the energy outside the main lobe, and has important value for improving the target positioning performance in the actual environment.

The present invention relates to a pulse radiation detection module and method, and specifically to a method and system for measuring the time spectrum of ultrafast pulsed γ / X-rays with a small beam spot. The method solves the technical problem in the prior art that the detection of ultrafast pulsed γ / X-ray time spectrum cannot simultaneously achieve ultrafast time resolution and sufficient position resolution, making it difficult to achieve the goal of ultrafast pulsed γ / X-ray time spectrum measurement with spatial alignment requirements. The method for measuring the time spectrum of ultrafast pulsed γ / X-rays with a small beam spot includes the following steps: 1) causing the γ / X-ray to be measured to be incident on a scintillator array; 2) measuring the position of the light-emitting scintillators on the scintillator array; 3) aligning the γ / X-ray to be measured with a semiconductor laser diode; 4) exciting the semiconductor laser diode to emit a laser pulse signal to a photoelectric conversion component; 5) the photoelectric conversion component converts the laser pulse signal into an electrical signal and records the signal, thereby achieving the measurement of the time spectrum of the ultrafast pulsed γ / X-ray with a small beam spot.

The invention relates to a multi-pixel point liquid scintillation neutron detector for marking neutron beam imaging, which comprises a detector shell, and a liquid scintillator array, a light guide, a photomultiplier tube assembly and a fixed support which are sequentially arranged in the shell, a plurality of groups of light splitting grooves are formed in one surface, coupled with the liquid scintillator array, of the light guide, and a plurality of groups of light splitting grooves are formed in the other surface of the light guide; the structure of the light splitting groove is specially designed to improve the light collection capability and the resolution capability of edge points of the scintillator array, the resolution of 100 pixel points is realized by adopting four photomultipliers, the parallelism and the pressure of a single photomultiplier can be independently adjusted by a fixed bracket, and the resolution efficiency of the scintillator array is improved. And each photomultiplier can be ensured to be attached to the light guide to the greatest extent. The device is compact in structure and easy to assemble, and the marked neutron position resolution capability and background interference resistance of the detector can be improved.

The invention provides an internet-of-things communication positioning solar electronic lock, and relates to the technical field of electronic lock positioning. The electronic lock comprises a GNSS module used for acquiring satellite positioning information; the IMU module is used for acquiring direct positioning information; the communication module is connected with the GNSS module and the IMU module and is used for uplink and downloading of positioning information; the resolving server is connected with the communication module and is used for acquiring the satellite positioning information of the GNSS module and the direct positioning information of the IMU module sent by the communication module, performing position resolving analysis to form real-time position information and downloading the real-time position information to the IMU module through the communication module; the energy storage battery is respectively connected with the GNSS module, the IMU module, the communication module and the resolving server; and the solar panel is connected with the energy storage battery. According to the electronic lock, solar energy is reasonably collected, and a high-precision energy-saving mode is adopted for positioning.

The utility model provides a camera lens device based on wavefront coding, and belongs to the technical field of optical detection. The camera lens device based on wavefront coding comprises a lens barrel and an industrial camera, the rear end of the lens barrel is connected with the industrial camera, an original infrared lens is installed in the lens barrel, a phase plate is fixed at the front end of the lens barrel, and a diaphragm is arranged between the phase plate and the original infrared lens. A phase plate is added, and the depth of field of the camera is expanded by using an encoding-decoding method, so that the measurement precision of the infrared deflection technology is improved; a wavefront coding method is adopted, so that the system is insensitive to defocus, and coding is realized by adding a phase plate into a camera lens; the phase plate is added, and the depth of field of the lens is expanded, so that in infrared deflection measurement, the camera can clearly image the measured lens and the light source, the position resolution and the angle resolution are improved, and the surface type reconstruction precision is improved.