21 results about "Continuous spectrum" patented technology

The invention relates to a device (56) for on-the-fly measurement of the absorption spectrum (σ(λ1)) in the visible light range of at least one wall (16) of preforms (12), comprising: - means (36) for conveying preforms (12), - a measurement light source (58) which emits a measurement light beam (55) according to a continuous measurement spectrum (σm), - a spectrometer (62) measuring the intensity (I) and the wavelength (λ1) of the first light beam (55) after having passed through the preform (12), characterised in that the measurement light source (58) comprises at least two primary light sources (58A, 58B, 58C, 58D) which each emit a primary light beam according to an associated continuous spectrum (σA, σB, σC, σD), the primary continuous spectra (σA, σB, σC, σD) of the primary sources (58A, 58B, 58C, 58D) being different.

This invention discloses a converging optical path for a solar spectroradiometer and its coaxial adjustment method, relating to the field of atmospheric measurement devices. The converging optical path includes a tracking optical tube and a measuring optical tube. The tracking optical tube consists of a pinhole, an adjustment mechanism, a four-quadrant detector, and an amplification and acquisition circuit. The measuring optical tube consists of a window, an aperture diaphragm, an off-axis parabolic mirror, a field-of-view diaphragm, a stray beam diaphragm, a meniscus lens, a neutral density filter, and a spectrometer. The method constructs a normalized evaluation index by acquiring a weighted integral sum of continuous spectral intensity from four quadrant signals and multiple preset reference bands (2–6 micrometers). A local five-point cross scan is performed centered on the current lock point to determine the optimal coaxial point and obtain target locking characteristics. Coaxial adjustment is triggered again upon power-on or when the evaluation index decreases. This invention improves the consistency between the measuring and tracking optical paths and the stability of direct-light measurements.

Embodiments of the present application provide a kind of MR equipment color correction method and related device, it is related to mixed reality technical field, the method comprises: obtaining target image to be displayed;Obtain the frequency domain data related to light source environment of the target image;In the case where it is determined that discrete spectral light source environment and continuous spectral light source environment exist in the target image according to the frequency domain data, the target image is regionally segmented, and discrete spectral light source region, continuous spectral light source region and transition region are obtained;The image corresponding to each region is respectively sampled to carry out color correction on the color correction model of preset;Display the target image after color correction.The target image is segmented, and different color correction parameters are used for correction for the different light source environment images segmented, effectively solve the color consistency problem of MR equipment under complex light source environment, provide more immersive and natural mixed reality experience for user.

The application discloses a filter transmittance measuring device and method based on a FOSC astronomical spectrometer, and belongs to the field of astronomical observation instrument detection and calibration, and comprises a spectrometer body, a multi-hole template, a filter mounting mechanism, a light source module and a data processing unit; wherein the multi-hole template is arranged at a focal plane and is used for dividing an image plane into a plurality of sampling sub-beams; the filter mounting mechanism at least comprises a first mounting station arranged at a rear adjacent position of the multi-hole template and a second mounting station arranged in a collimating light path, and is respectively used for measuring spatial position transmittance distribution and incident angle transmittance response of a filter to be measured. The light source module comprises a line spectrum calibration light source and a continuous spectrum measuring light source. The device and method can realize in-situ characterization of the filter in a real working light path of the FOSC astronomical spectrometer, and are especially suitable for measuring spatial uniformity and angle response of a narrow-band filter under real working conditions.

The application provides a noise equalization method and device for a high-order modulation double offset continuous spectrum NFDM system, and belongs to the technical field of optical fiber communication. The method comprises the following steps: generating a distribution probability corresponding to a high-order modulation format constellation point by using an MB distribution at a transmitting end, and generating a PS symbol according to the distribution probability; modulating the PS symbol to a scattering coefficient to generate a time domain signal, and transmitting the time domain signal into an optical fiber after electro-optical conversion; recovering the PS symbol by using a receiving end in a DSP sequence opposite to that of the transmitting end, reorganizing the sequence order of the PS symbol, and obtaining input features of a c-ANN; taking ideal symbols of the transmitting end and the reorganized c-ANN input features of the receiving end as labels and input data of a c-ANN network, obtaining equalized data, and realizing suppression and equalization of ASE noise and processing noise. The application can effectively equalize noise and improve system performance.

The application relates to the technical field of intelligent interpretation of remote sensing images, and discloses a hyperspectral remote sensing image ground feature classification method based on spectral fingerprint iterative matching, which comprises the following steps: performing invalid waveband elimination and noise suppression on an original hyperspectral image, and organizing the original hyperspectral image into a structured CSV format data set according to rows and columns; selecting sample points of various typical ground features, and constructing a spectral fingerprint template library from the CSV format data set by using the spatial coordinates of the sample points; traversing each spectral feature vector in the CSV format data set to be classified, calculating a Hamming distance, and using a multi-round progressive threshold matching mechanism to progressively match the Hamming distance to generate a ground feature classification result; and outputting a ground feature classification product which can be directly used for thematic mapping and analysis, so that the classification of hyperspectral remote sensing image ground features is realized. The application effectively solves the calculation redundancy and the same-object different-spectrum interference problem of directly processing continuous spectral curves in a traditional hyperspectral classification method.

This invention discloses a low-level logic architecture for AI chips based on continuous proportional spectral computation. It abandons traditional binary 0 / 1 discrete computation and adopts the [0,1] continuous proportional range as the basic computational unit. Through core computational rules such as proportional superposition, proportional enhancement, proportional suppression, and proportional thresholding, a novel continuous logic computation system is constructed. This invention eliminates the loss of binary discretization from the bottom layer, achieves native processing of continuous signals, reduces computational levels and chip power consumption, and improves the generalization, interpretability, and decision quality of AI systems. It can be widely applied to AI large-scale model inference, edge intelligent devices, and multimodal data fusion scenarios.

The application discloses a synchronous spectrum and color imaging system and method based on multi-spectrum feature coding. The system comprises: a multi-feature illumination module for generating at least two groups of wide-spectrum light with different spectral power distributions; an image acquisition module comprising at least one multi-channel image sensor for capturing the response of an object under test under different wide-spectrum light in a synchronous timing to obtain original observation data containing spatial, channel and time multi-dimensional information; a synchronous control module for coordinating the switching sequence of the multi-feature illumination module and the exposure timing of the image acquisition module; and a calculation and reconstruction module for directly generating a color image through color space mapping for the original observation data under the first wide-spectrum illumination light, and for carrying out inverse operation on the original observation data under the second wide-spectrum coding light based on a preset spectrum reconstruction model to obtain continuous spectrum data. The application can simultaneously detect an RGB image and perform spectrum restoration, and can effectively reduce the cost and system complexity.

The application provides an online monitoring system and method for coupling syngas components in a gasification process, starting monitoring of syngas components in a gasification furnace, using fixed interval intermittent data of syngas to establish a chromatography-spectrum response correlation model of syngas, and then converting continuous spectrum data of syngas into a preliminary concentration value of syngas components based on the response correlation model; according to a previously established baseline drift mapping table and temperature and pressure parameters of the gasification furnace, a baseline drift compensation amount of a current time of a rapid spectrometer is calculated, the preliminary concentration value of the syngas components is corrected through the baseline drift compensation amount, and a corrected concentration value is obtained; when new fixed interval intermittent data is obtained, the current response correlation model and the baseline drift mapping table are updated using the fixed interval intermittent data, and then all corrected concentration values are retroactively compensated. Based on the above scheme, fusion calibration of continuous spectrum data and intermittent chromatography data can be realized.

This invention relates to the field of spectroscopic instrument calibration technology, and discloses a spectral wavelength calibration method based on grating dispersion and spatial filtering, comprising: 1. incident collimated light from a broadband light source onto a grating; 2. setting a spatial filter that can move along the dispersion direction near the image plane of the dispersive optical path, and selecting narrowband light with different center wavelengths from the continuous spectrum by moving the filter; 3. for each filter position, measuring the center wavelength of the selected narrowband light using a high-precision spectrometer, and capturing a spot image using a detector array to be calibrated; 4. extracting the centroid pixel coordinates of the spot from the image; 5. fitting the wavelength and pixel coordinates to establish a calibration equation between the pixel coordinates and the wavelength. This invention does not overly rely on discrete standard light sources, can actively and continuously acquire high-density calibration points, the process is easy to automate, and the calibration accuracy is high, making it suitable for online calibration of miniaturized and integrated spectrometers.

The application discloses an electromagnetic spectrum anomaly signal detection method and system, and relates to the technical field of electromagnetic spectrum detection. The method performs continuous spectrum scanning on a target frequency band and carries out time sequence alignment to construct a spectrum data set. A sliding window is set, and statistical analysis is performed on the spectrum data to establish a noise floor benchmark representing background noise level. The overall spectrum energy change in the window is combined to compensate for receiver gain drift, and a net spectrum representation relative to the noise floor is formed. On this basis, the time-frequency units continuously enhanced in the spectrum are connected and aggregated to generate candidate events. Multidimensional features are extracted from the event level, the decision threshold is adaptively adjusted according to the spectrum occupation state, and the candidate events are comprehensively judged, so that stable detection and reliable identification of abnormal signals in a complex electromagnetic environment are realized.

This invention discloses a method and system for detecting abnormal signals in the electromagnetic spectrum, relating to the field of electromagnetic spectrum detection technology. The method constructs a spectrum dataset by performing continuous spectrum scanning and timing alignment on the target frequency band; it sets a sliding window and performs statistical analysis on the spectrum data to establish a noise floor benchmark characterizing the background noise level, and compensates for receiver gain drift by incorporating overall spectral energy changes within the window, forming a net boost spectrum representation relative to the noise floor; based on this, it connects and aggregates continuously enhancing time-frequency units in the spectrum to generate candidate events, extracts multi-dimensional features from the event level, and adaptively adjusts the decision threshold based on the spectrum occupancy status to comprehensively judge the candidate events, thereby achieving stable detection and reliable identification of abnormal signals in complex electromagnetic environments.

The application discloses a kind of based on amplitude heterogeneity partial amplitude death implementation method.By constructing the Stuart-Landau coupled oscillation system model with the amplitude heterogeneity subject to uniform distribution, the conjugate average field coupling is introduced, combined with partial amplitude death steady-state analysis and its linear stability analysis, the continuous spectrum and discrete spectrum of coupled oscillator system are solved, the upper boundary of partial amplitude death boundary and the amplitude death proportion expression are determined.The influence of amplitude distribution parameters and coupling strength on partial amplitude death can be determined, and the partial amplitude death boundary line, death proportion and phase transition process can be identified.This method breaks through the limitations of traditional numerical simulation fitting, and the scheme is universal, which can meet the high-precision regulation and control requirements of complex coupled systems.It can provide reliable theoretical basis and technical support for the dynamic analysis, structure optimization and precise regulation and control of complex oscillation systems such as nonlinear systems, coupled oscillators, artificial neural networks and power systems.

A method for batch number association of positioning for non-cooperative targets observed jointly by multiple stations is disclosed, relating to the field of multi-station joint observation information association. This invention aims to address the problem that existing batch number association methods for multi-station measurement information struggle to provide stable and effective association results, leading to a decrease in subsequent positioning and tracking accuracy. The invention includes: acquiring the measurement set obtained from observation station s to obtain the target's azimuth measurement power spectrum distribution function and line spectrum frequency; and using this information to obtain the azimuth feature subset Θ of the associated set. s‑1,q The spatial fuzzy relation matrix of the azimuth features to be associated is obtained by using the continuous spectrum feature subset of the already associated set and the continuous spectrum feature fuzzy relation matrix of the features to be associated. The line spectrum feature subset of the already associated set is then used to obtain the fuzzy relation matrix of the line spectrum features to be associated. A comprehensive fuzzy relation matrix is ​​constructed and two-dimensional association is performed to obtain the batch number association result. This invention is used to associate batch numbers of multi-station observation targets.

This invention discloses a low-haze patterned monocrystalline silicon epitaxial wafer and its preparation method, belonging to the field of semiconductor silicon wafer manufacturing technology. The method includes: selecting a (100) crystal plane polished silicon wafer with a crystal orientation deviation angle of less than 0.3° as a substrate, wherein the substrate has a high COP defect density, and the number of COP sizes at a specific detection scale is significantly higher than that of conventional monocrystalline polished silicon wafers; for example, for a 300mm substrate, the COP defect density is 2000~12000 at a 26nm detection scale; and epitaxially growing a monocrystalline silicon layer on the substrate using a chemical vapor deposition process to obtain a monocrystalline silicon epitaxial wafer with a low-haze pattern on the surface. This invention breaks the regular distribution of atomic steps on the substrate through high COP defects, changing the spatial frequency distribution from discrete peaks to a continuous spectrum, altering the surface light scattering characteristics, fundamentally eliminating the haze pattern, resulting in a surface haze value of less than 1 for the epitaxial wafer, and exhibiting strong process compatibility, making it easy for industrial application.

The invention relates to a device (56) for on-the-fly measurement of the absorption spectrum (σ(λ1)) in the visible light range of at least one wall (16) of preforms (12) comprising: - means (36) for conveying preforms (12), - a measurement light source (58) that emits a measurement light beam (55) according to a continuous measurement spectrum (σm), - a spectrometer (62) measuring the intensity (I) and the wavelength (λ1) of the first light beam (55) after passing through the preform (12), characterized in that the measurement light source (58) comprises at least two primary light sources (58A, 58B, 58C, 58D) that each emit a primary light beam according to an associated continuous spectrum (σA, σB, σC, σD), the spectra (σA, σB, σC, σD) primary continuouss of said primary sources (58A, 58B, 58C, 58D) being different. Figure for the abbreviation: Figure 3

The present application relates to a mineral identification data processing method based on linear focusing Raman spectrum and multi-label model, and relates to the technical field of automatic mineral identification. The method comprises the following steps: obtaining a linear focusing Raman spectrum matrix of a sample to be measured; analyzing a Raman shift axis, arranging each linear position spectrum to obtain two-column spectrum data of Raman shift-intensity; performing effective position screening on the two-column spectrum data; performing preprocessing on each spectrum to obtain model input spectrum; establishing a mineral Raman spectrum training data set; establishing a Raman spectrum identification model; outputting a main mineral category and a candidate mineral category of each linear position by using a single-label classification head, and outputting the existence probability of each mineral component in each linear position by using a multi-label classification head. The present application can reduce the mixed mineral misjudgment risk caused by the traditional single-label classification model which only outputs one kind of mineral, and has the advantages of high automation degree, strong anti-background interference ability, and suitability for spatial continuous spectrum analysis.

The application discloses an infrared spectrum mixed gas identification method and an identification device. The identification method comprises the following steps: sending a regulation and control instruction to a regulation and control component according to a regulation and control strategy, so that an infrared narrow-band filter generates multiple detection light beams with different center wavelengths, which are incident into a detection component; obtaining detection information obtained by detecting values corresponding to the detection component and each detection light beam, and judging whether it is a mixed gas type through a judgment rule; if yes, performing multi-component analysis on the detection information to obtain component analysis information; and obtaining key detection parameters from the detection information according to the component analysis information, and performing analysis to obtain a corresponding gas identification result. The identification method can realize continuous spectrum scanning in a certain waveband range by controlling the regulation and control component to adjust the infrared narrow-band filter to generate detection light beams with different center wavelengths, can perform multi-component analysis and obtain a gas identification result, and can realize reliable analysis on a mixed gas with multiple gas components and accurate acquisition of the concentration values of each gas.

The application discloses a pot life evaluation device and an intelligent evaluation method. The pot life evaluation device comprises a pot, which is an iron pot. The pot life evaluation device further comprises a light source, a spectrum receiving module and a main controller. The light source is used for emitting a continuous spectrum with a wavelength of 360-750 nm to the pot. The spectrum receiving module is used for receiving light reflected by the pot. The main controller is used for calculating the remaining life of the pot according to the reflection intensity output by the spectrum receiving module. Compared with the prior art, the pot life or the oxidation degree can be automatically identified on line by the light source and the spectrum receiving module. The intensity ratio of the characteristic absorption peak (380 nm) of iron oxide and the reflectivity (650 nm) of metal is used as an aging index, the limitation of traditional visual detection is broken, and a healthier cooking experience can be provided.

This invention discloses a high color rendering, full-spectrum plasma luminescent material, relating to the field of plasma luminescence technology. It aims to address the shortcomings of existing plasma luminescent materials, such as insufficient color rendering, presence of toxic and harmful substances, poor stability, short lifespan, and inability to form a continuous spectrum. The luminescent material is prepared from the following components by weight: 50-80 parts sulfur (S), 20-50 parts selenium (Se), 1-5 parts a triiodine compound of rare earth elements, 0.1-1 parts an alkali metal bromine compound, and 0.5-3 parts an alkali metal iodine compound. Optionally, europium iodide (EuI2), indium iodide (InI), and excess pure iodine (I2) are added. It is encapsulated in a mixed buffer gas of argon (Ar) and krypton (Kr), with the inner wall of the quartz bubble shell coated with an Al2O3 protective film. The raw materials of this invention are non-toxic and environmentally friendly, complying with RoHS and other environmental regulations. It can form a continuous spectrum close to sunlight, and exhibits long lifespan and strong stability.