276 results about "Light attenuation" patented technology

The invention discloses a device and a method for intelligently investigating types and quantity of fishes. The device comprises a self-adaptive sonar detection module, a three-dimensional image acquisition module, an image preprocessing module, a fish detection module, a main body segmentation module and an identification and classification module. The sonar module is integrated with a three-frequency-band transducer, can dynamically switch frequency according to fish school depth, and realizes target tracking counting and quantity estimation in combination with an algorithm; the image acquisition module constructs a fish school three-dimensional image model by combining a depth camera with a light attenuation compensation algorithm; the preprocessing module fuses acoustic and optical features and expands a data set; the detection and segmentation module is used for accurately positioning fishes and removing impurities; the identification and classification module realizes type identification based on transfer learning and supports incremental learning of new fingerlings. According to the method, through cooperation of multiple modules, the problems of insufficient detection precision, poor image quality and the like in traditional investigation are solved, efficient and accurate investigation of fish species and quantity is realized, and technical support is provided for fishery resource management and ecological protection.

The invention provides a liquid crystal display lightening parameter self-adaptive calibration method, and relates to the technical field of image display. The method comprises the following steps: firstly, establishing a characteristic matrix and a parameter library of liquid crystal molecules, and dynamically correcting according to a real-time working state; and based on the characteristic matrix and the parameter library, executing pixel-level forward prediction on the input image, and generating a color error distribution diagram by solving a coupling solution of a liquid crystal molecule dynamic response differential equation and a backlight attenuation compensation equation. And taking the error distribution diagram as input, obtaining a gradient optimization direction of the calibration parameter mapping diagram through back propagation calculation, and iteratively approaching the optimal pixel value compensation amount in each frame period. And injecting a test pulse into the characteristic pixel point, capturing a voltage response curve through a sampling circuit, and converting the voltage response curve into a real-time correction value mapping graph. And finally, carrying out weighted fusion on the real-time correction value mapping graph and the pixel value compensation amount to generate a calibration parameter mapping graph. The self-adaptive calibration of the display parameters is improved, and the display consistency and the color accuracy are effectively improved.

The invention provides a clothing 3D virtual fabric texture dynamic simulation method and device, equipment and a medium, and the method comprises the steps: obtaining multi-layer fabric data, carrying out the mathematical modeling of the microstructure features and macroscopic physical attributes of the multi-layer fabric data, and obtaining a hierarchical material model; calculating vertex displacement data and interlayer contact pressure of the fabric data of each layer in the dynamic deformation process through a physical engine, and generating vertex coordinates and deformation gradient data after deformation; constructing a dynamic light transmittance field according to the deformation gradient data and the hierarchical material model, and generating a light transfer matrix representing an interlayer light attenuation relationship through a ray tracing algorithm; performing dynamic displacement compensation on the UV coordinates based on the deformed vertex coordinates and the light transfer matrix to generate a corrected UV coordinate set; and inputting the dynamic light transmittance field and the corrected UV coordinate set into a rendering pipeline, performing multi-channel optical characteristic fusion calculation, and outputting virtual rendering data. By adopting the method, the authenticity of dynamic simulation of the multi-layer fabric can be improved.

The invention relates to the technical field of geological exploration, in particular to an underground environment data acquisition method and system for three-dimensional simulation environment modeling, working condition parameters are acquired and input into a CFD model, and an underground dynamic risk map is generated based on shock wave signals; the method comprises the following steps: collecting water mist data to construct a humidity field, and embedding humidity field data into a dynamic risk map generation process, which comprises the following steps: in an injection compression period, solving an N-S equation set, detecting and encrypting a key area grid through a pressure gradient, and generating a burst dust cloud form and density distribution. The results of four stages of turbulence evolution are fused to form a five-dimensional tensor structure including space coordinates, duration time, humidity compensation risk levels, a water film distribution thermodynamic diagram and a water mist light attenuation coefficient, different risk areas can be clearly marked, switching of data acquisition strategies is guided, the problems of artifacts and distortion are effectively solved, and the accuracy of data acquisition is improved. Accurate point cloud data can be obtained in a complex environment.

The invention discloses a light attenuation assembly, an optical module, an optical device and related equipment. The light attenuation assembly comprises a half-wave plate, a first polarization beam splitter and a second polarization beam splitter which are sequentially arranged along a light path. The half-wave plate is used for converting the first linearly polarized light into second linearly polarized light, and the second linearly polarized light can be decomposed into third linearly polarized light and fourth linearly polarized light of which the polarization directions are perpendicular to each other; the first polarization beam splitter is used for dividing incident second linearly polarized light into third linearly polarized light and fourth linearly polarized light, reflecting the third linearly polarized light to the second polarization beam splitter, and transmitting and filtering the fourth linearly polarized light at the same time; and the second polarization beam splitter is used for reflecting and outputting the third linearly polarized light and transmitting and filtering the residual fourth linearly polarized light. Through the light attenuation assembly, the quality of the output laser beam can be improved.

A method for calculating an IPA of an intravascular OCT image, relating to the technical field of medical instruments, the method including: acquiring an intravascular OCT image (S101); determining a calcified plaque region of the intravascular OCT image (S102); determining a light attenuation coefficient of the intravascular OCT image, where the light attenuation coefficient of the intravascular OCT image does not include a light attenuation coefficient of the calcified plaque region (S103); and determining an IPA of the intravascular OCT image according to the light attenuation coefficient of the intravascular OCT image (S104). The above method can increase accuracy of an IPA.

The invention discloses a substation emergency lighting self-service power supply system, and relates to the technical field of emergency lighting power supply, and the system comprises the following steps: installing a sensor and a communication module, and setting basic parameters; collecting data, dynamically calculating illumination requirements, and compensating visual delay of human eyes; reading battery parameters, and quantifying the aging degree and the residual available capacity of the battery; calculating the power supply priority of each node by combining the emergency exit position based on the adjacent node state; the LED driving current is dynamically adjusted according to the priority, and gradient switching is adopted when the brightness changes in a large range; the low-electric-quantity node automatically initiates help seeking, and the surrounding nodes reduce own brightness in proportion; operation data are uploaded regularly, algorithm parameters are optimized, and a positioning signal is activated to guide maintenance when the battery is seriously lack of electricity. According to the invention, through the double-variable dynamic model coupling the ambient light attenuation compensation factor and the battery health degree attenuation function, the error accumulation of a single electric quantity criterion is eliminated, so that the power supply duration prediction better fits the real working condition.

The invention relates to the technical field of street lamp monitoring and control, and particularly discloses an intelligent street lamp monitoring and control system and method based on the Internet of Things. Comprising an edge calculation module, a multi-modal data fusion module, an edge processing module, a health prediction module and the like. The method comprises the following steps: collecting and preprocessing multi-dimensional data of a street lamp, and generating a multi-modal feature vector by using a Kalman filtering algorithm; outputting a reference PWM duty ratio through the reinforcement learning Q network, and obtaining an optimal PWM duty ratio in combination with light attenuation compensation analysis; constructing a residual life prediction model based on the long-short-term memory network, predicting the residual service life of the street lamp, and determining the optimal operation power in combination with the power consumption time period; and executing corresponding control operation on the street lamps based on the optimal PWM duty ratio and the optimal operation power, and monitoring and displaying abnormal street lamps at the same time. Intelligent monitoring and accurate control of the street lamp are realized, illumination quality and energy conservation are considered, the service life can be pre-judged, timely maintenance is realized, and the intelligent and efficient management of the urban street lamp is improved.

The invention discloses a control system for detecting light attenuation and self-compensation of an LED heating lamp panel, and relates to the field of semiconductor wafer heating and cleaning, the system collects illumination data of the LED heating lamp panel through a spectrum detection unit, a main control unit compares real-time illumination data with target illumination data, and then the input power of the lamp panel is adjusted to realize self-compensation; the temperature detection unit and the current detection unit respectively monitor the temperature of the lamp panel and the current of the power supply loop, and stop the self-compensation operation in case of abnormality; after illumination collection or power adjustment is completed every time, the lamp panel enters a zero-power input stage to be cooled; after the self-compensation is completed, the main control unit transmits the adaptive power value to the equipment upper computer so as to update the process parameters; according to the system, automatic detection and accurate compensation of light attenuation of the LED heating lamp panel are achieved, manual intervention is not needed, the stability of the light power density of the LED heating lamp panel is guaranteed, the equipment loss is reduced, and the wafer cleaning quality and the production efficiency are improved.

The invention relates to the technical field of photo-thermal control, and provides a distributed photo-thermal correction method and system for an MIP LED display screen. Deploying sensors on the surface of the display screen, and constructing a sensor network among the sensors to collect photo-thermal data of the display screen; performing model construction based on the photo-thermal data and the material parameters of the display screen, and generating a first model representing light attenuation and a second model representing heat conduction; coupling the first model and the second model to generate a photo-thermal coupling model; performing optimization driving on each LED through the photo-thermal coupling model and preset target bright color parameters to generate driving parameters; and distributing the driving parameters to a control unit of the LED so as to control the operation of the LED. The photothermal effect can be accurately simulated through model construction and coupling, so that the LEDs are optimally driven, driving parameters are generated, and then operation is distributed and controlled, the accuracy of display correction is improved, and the stability and uniformity of the display effect of the display screen are enhanced.

A laser scanning device of an UAV-borne LiDAR for water depth measurement, LiDAR, and an UAV are provided. In the laser scanning device, through synchronous driving of two motors, when the incident laser beam completes a 360° light spot scanning process by the rotation of a light-plane reflecting rotating mirror, and a scanning beam is in position ranges of 0°-X° and (360-X)°-360°, a photodetector protection assembly just rotates to an area with a light attenuation value of 0, or an occlusion-free area. Light echoes generated by the scanning beams in the ranges enter a photodetector without attenuation, while the scanning beam in the range of X°-(360-X°) is occluded by a notched circular shield, and stray light generated by the occlusion cannot enter the photodetector due to attenuation of a circular light attenuation sheet or occlusion of an unnotched part of the circular blocking sheet.

The complex water environment multi-wavelength laser attenuation simulation system comprises a multi-wavelength laser emission module, a water body environment simulation module, a light splitting module and a power detection module. Seawater characteristics such as temperature, salinity and turbulence intensity of a water body are accurately controlled, parameters such as turbidity of the water body are changed by adding suspended particles such as diatomite and calcium carbonate, and high-precision simulation and measurement of laser attenuation characteristics in different underwater environments are realized by combining a multi-wavelength laser radar technology. According to the multi-wavelength underwater test system, through difference analysis among multiple wavelengths, environment simulation of laser detection capability and substance identification in different water body environments such as turbulent flow and quantitative influence among multi-wavelength laser can be effectively simulated; more comprehensive transmission characteristic experiment test verification and capability simulation under multi-wavelength laser are provided for underwater target identification, marine environment monitoring, resource exploration and other applications, and the multi-wavelength marine detection potential of future laser is expected to be improved.

The ultra-thin module comprises a light guide plate, first light source assemblies for illuminating the light guide plate are arranged on the two sides of the light guide plate; the second light source assembly is arranged on one end face of the light guide plate, the side wall of the second light source assembly is provided with a light guide line, and the lower surface of the light guide plate protrudes downwards to form a protruding block matched with the light guide line so as to supplement a light source to the middle of the light guide plate; the first reflecting film is fixed on the lower surface of the light guide plate to reflect light to a preset direction; a rubber frame; through the arrangement of the light guide wire, the convex block, the second mounting block, the second light source and the second light guide piece, the device can well reduce the condition of low brightness of a backlight center caused by light attenuation under the condition that the display screen is thin, so that the light supplementing effect is achieved, and in the later use process, the brightness of the display screen is improved. The brightness of the center and the edge of the display screen can be controlled to be switched on and off respectively, and energy consumption is reduced.

The invention relates to the technical field of vehicle lamp heat dissipation, in particular to a temperature control system and a vehicle lamp. The heat conduction pipe can quickly absorb heat generated by the automobile lamp panel and transfer the heat to the area where the bent part is connected with the fan, air flowing can be accelerated when the fan operates, heat on the heat conduction pipe is taken away, and the problems of light attenuation, short service life and the like caused by overheating of the automobile lamp are effectively avoided. And secondly, the heat conduction pipe is embedded into the groove body formed by splicing the automobile lamp panels, so that the problem that the size is increased due to a natural heat dissipation increasing structure is avoided, the heat dissipation assembly can better adapt to the headlamp assemblies of different automobile types, and the internal space layout of the automobile lamp is optimized. In addition, the heat conduction pipe is tightly matched with the automobile lamp panel and the fan, so that the influence on the heat dissipation effect due to component looseness or position deviation is reduced, the automobile lamp can stably dissipate heat under various working conditions, and a reliable guarantee is provided for safe illumination of an automobile.

The invention relates to the technical field of mine lighting, in particular to an intelligent mining intrinsically safe LED lighting lamp strip and a lighting system.The lamp strip comprises an insulation assembly, a plug-in assembly and a lighting assembly, and the system comprises a production judgment module, a light attenuation judgment module, a lighting regulation and control module, a regulation and control detection module, a shadow judgment module and a shadow compensation module; the system predicts a high-dust working condition through vibration analysis and evaluates light attenuation by fusing dust concentration and coal rock absorbance; regulating and controlling the brightness and spectrum of the lamp strip according to the evaluation result; the regulation and control effect is verified through closed-loop detection; identifying a dynamic shadow area based on the equipment pose and the light field distribution; and finally, in combination with the gas concentration safety constraint, performing safety-first local compensation or brightness-first overall brightening on the shadow area. The problems that instantaneous light attenuation caused by cooperation of dust outbreak at the moment of cutting and strong light absorption of a coal wall cannot be effectively handled, and dynamic shielding shadow caused by movement of a huge machine body of mining equipment cannot be effectively handled are solved.

A plurality of cooling fins are arranged at the top of the heat dissipation shell, a plurality of first ventilation openings are formed in the periphery of the heat dissipation shell, a containing groove is formed in the bottom of the heat dissipation shell, the heat dissipation shell further comprises a heat dissipation structure stretching into the containing groove, and the heat dissipation structure is arranged in the containing groove. The heat dissipation structure is provided with a second ventilation opening extending in the axial direction of the heat dissipation shell. According to the scheme, the heat dissipation structure which extends into the containing groove and is provided with the second ventilation opening is arranged on the heat dissipation shell, so that the functional part installed in the containing groove can dissipate heat in the center of the functional part in time; and premature light attenuation and even complete failure of the light source close to the center due to temperature aggregation can be avoided.

The invention provides an exposure system and photoetching equipment. The exposure system comprises a light source; the detection module is used for collecting a light intensity signal of the light source and sending the light intensity signal to the control module; and the control module is used for receiving the light intensity signal and controlling the light source to reach the set light intensity according to the light intensity signal. Thus, in the exposure system, the light source, the detection module and the control module form a closed-loop control system, the control module adjusts the light intensity of the light source according to the real-time light intensity collected by the detection module, so that real-time light attenuation compensation of the light source is realized, and the exposure system can adaptively adjust the output light intensity of the light source.

The invention discloses a solar cement production system and method, and belongs to the technical field of cement production, and the system comprises an angle adjustment module which is used for constructing a control model according to the irradiation intensity, the kiln temperature response curve, the raw material decomposition reaction kinetic parameters and the condensation angle of a condensation solar module in the cement production process, inputting the operation data acquired in real time into the control model to obtain an angle adjustment instruction, and dynamically adjusting the condensation angle of the condensation solar module; the meteorological prediction module is used for predicting a light attenuation trend curve according to the real-time satellite cloud picture and the atmospheric transmissivity data; and the energy storage module is used for storing redundant solar energy or providing energy supplement for the concentrating solar module according to the light attenuation trend curve and the target firing temperature in an energy storage mode of the fused salt channel and the lithium battery channel. According to the invention, through dynamic coupling characteristics among multiple parameters and meteorological prediction, the condensation angle is adjusted, energy is supplemented, and rapid switching of energy supply states and energy supply continuity and stability are realized.

The application provides a light information processing method and device, electronic equipment, computer program product and computer readable storage medium; the method comprises: acquiring real light information corresponding to a real scene; acquiring virtual light information corresponding to a virtual scene; comparing and calculating the virtual light information and the real light information to obtain light difference information; performing light attenuation calculation based on the light difference information to obtain configuration parameters of at least one supplementary light source, wherein the supplementary light source is used for supplementary lighting; matching each supplementary light source configuration parameter with a lamp database to obtain a target lamp corresponding to each supplementary light source in the lamp database; taking each target lamp and the configuration parameter corresponding to each target lamp as configuration information, and performing scene light synchronization based on the configuration information. Through the application, the accuracy of synchronizing the light between the virtual scene and the real scene can be improved.

Even if the lens device does not retain information about light attenuation, it generates information about the T-value of the lens device. [Solution] The processing device 7 obtains information regarding the F-number of the lens device L attached to the interchangeable lens imaging device C from the lens device, obtains information regarding the light intensity attenuation of the lens device, and generates information regarding the T-number of the lens device using the information regarding the F-number and the information regarding the light intensity attenuation.

The invention discloses an environment art immersive collaborative design system based on multi-source data fusion, belongs to the technical field of computer data processing, and particularly relates to an immersive display system based on data processing and intelligent control. According to the system, real-time positions, flowing speeds and staying states of audiences are collected through the people flow interaction behavior recognition module, a display space is divided into a plurality of subareas, and space-time corresponding control over light and shadow and a sound field is achieved; a three-dimensional illumination matrix is established, and local shadow and brightness attenuation are compensated in combination with illumination attenuation dynamic calculation and an adaptive enhancement mechanism; the sound environment analysis module constructs a three-dimensional sound pressure distribution model, and realizes sound field equalization and local compensation according to sound absorption attenuation calculation and a sound pressure correction strategy. The system realizes synchronous response of light, sound and audience behaviors through multi-source data fusion and dynamic feedback adjustment, improves the space immersion, reduces the no-load energy consumption of equipment, and is suitable for various scenes such as night games in scenic spots, garden display, cultural performance and the like.

The invention relates to the technical field of image recognition, in particular to an intelligent recognition method and system for benthonic animals and a storage medium. The method comprises the following steps: acquiring underwater image sets of different water depths of a target area by using a preset underwater camera; determining the illumination attenuation of different water depths according to the pixel gray level change conditions of the underwater image sets of different water depths, and correcting the underwater image set of the target water depth according to the illumination attenuation of different water depths to obtain a target underwater image set; performing minimum observation unit segmentation on the target underwater image set, and dividing benthonic animal candidate image areas according to a segmentation result; and according to the edge feature change condition of the benthonic animal candidate image region, identifying a benthonic animal target image region, binding the benthonic animal target image region with a target water depth, and summarizing to generate a benthonic animal water depth distribution report. According to the method, the influence of illumination, noise and background interference is effectively reduced, and the recognition precision and environmental adaptability of the benthonic animals are improved.

This application provides a key parameter testing system and method for fiber-optic single-photon avalanche diodes (SPADs). The system uses a testing module to drive multiple SPADs under test, generates laser trigger signals based on parameter testing requests, and acquires pulse parameters for each SPAD under test under different testing modes with and without light source illumination. A laser generation module generates an initial pulse signal based on the laser trigger signal; a laser adjustment and transmission module adjusts the light attenuation value of the initial pulse laser and separates it into multiple test light sources with equal laser power; a control module monitors the laser power of the laser generation module and configures the laser adjustment parameters of the laser adjustment and transmission module; and the system determines the key parameters of each SPAD under test based on the pulse parameters. The system provided in this application can quickly detect the key parameters of multiple SPADs while ensuring detection accuracy, and the parameter testing process is simple and intuitive.

A non-foaming aqueous composition is applied to a fabric substrate to provide a non-foaming light-attenuating coating in the resulting coated fabric substrate that produces reduced outdoor light glare. The non-foaming aqueous composition has 5-50% solids and a zero shear viscosity of 100-1000 mPa-sec at 25°C. The composition has: i) 0.1-20 wt% of porous particles, and optionally an opaque colorant; ii) 4-20 wt% of a film-forming binder material that includes at least a chlorinated polymer; iii) 2-12 wt% of a white inorganic particulate filler material having a refractive index (RI) greater than 2 and a median particle size less than 1 pm; and iv) 5-16 wt% of a white low-density particulate hydrated alumina having a median particle size less than or equal to 3 pm. The non-foaming aqueous composition can be applied to a fabric substrate to reduce outdoor light glare without changing indoor light tinting and light blocking properties.

The invention relates to a method for testing non-contact friction energy dissipation influenced by defects in a two-dimensional heterojunction material, electronic equipment and a non-transient computer readable storage medium. The method comprises the following steps: detecting a heterojunction formed by a first two-dimensional material and a second two-dimensional material by using a femtosecond transient absorption spectrum technology to obtain a detection light attenuation curve; acquiring the electroacoustic coupling life according to the probe light attenuation curve; the non-contact friction energy dissipation is obtained according to the following model: mi is the atomic mass of the first two-dimensional material, me is the electron mass, Cs is the sound velocity in the first two-dimensional material, ne is the carrier concentration of the second two-dimensional material, ni is the atomic number density of the heterojunction, T is the environment temperature, kB is the Boltzmann constant, and tau is the obtained electroacoustic coupling life. The invention provides a method for obtaining non-contact friction energy dissipation influenced by defects by measuring the electroacoustic coupling life of a two-dimensional heterojunction material.

The utility model provides a head die for a near-infrared light treatment object, the head die is configured to be used for measuring light attenuation and transmission conditions in an accommodating space of near-infrared light treatment equipment, the absorption rate of the surface of the head die for near-infrared light is greater than a preset absorption rate, the structure meets a first group of structure parameters, and the first group of structure parameters comprises: the head circumference is 525-583 mm, and the head circumference is greater than the preset absorption rate. The length of the head ranges from 170 mm to 196 mm, and the width of the head ranges from 140 mm to 166 mm. On the basis of the corresponding condition of the head model and the real human body, as for the performance shown by the near-infrared light treatment equipment designed by using the head model, it can be considered that the near-infrared light treatment equipment can show the same performance on the real human body, and therefore the near-infrared light treatment equipment can be improved in a targeted mode. Therefore, the head die can be used for detecting and improving near-infrared light treatment equipment for performing near-infrared irradiation on the head.

The invention belongs to the technical field of fluorescence lifetime detection, and particularly relates to a fluorescence lifetime measurement method and system based on low-frame-rate video imaging. The method comprises the following steps: irradiating a to-be-detected sample by adopting an excitation light source, simultaneously collecting a video of a periodic luminescence attenuation process of the to-be-detected sample, and separating the video into a plurality of images with frame number marks; the excitation frequency of the excitation light source and the frame rate of video acquisition meet the following condition: FLED = Fcam + n, and n is a positive integer smaller than Fcam; all the images are converted into gray level images, and the average gray level value of light-emitting areas of the gray level images serves as a fluorescence signal intensity value; storing the fluorescence signal intensity value according to a frame number index, and screening out a signal attenuation sequence from the fluorescence signal intensity value; and fitting the signal attenuation sequence by using a least square method to obtain a fitting curve of the signal intensity value along with the time change, and obtaining the fluorescence lifetime of the sample to be detected from the fitting curve. According to the invention, the detection complexity and cost can be reduced, and the fluorescence lifetime of millisecond or even microsecond level can be measured.

The utility model relates to a kind of device of pulse laser pulse sub-string, including pulse laser, laser attenuation device, laser beam-reducing device, laser polarization device, wave sheet, Pockels cell, output mirror, waveform detection device, and output mirror is to the waveform detection device output first light beam and to the original light path reflection second light beam;Laser polarization device side is also configured full mirror;Pockels cell is connected with high-voltage pulse generator, pulse laser is also connected with digital delay pulse signal generator, and digital delay pulse signal generator is used to send synchronization signal to high-voltage pulse generator to control high-voltage pulse generator to generate voltage pulse when pulse laser emits laser beam reaches Pockels cell.This application realizes the stable control and output of pulse sub-string by the electro-optic modulation characteristics of Pockels cell, compared with traditional method of improving laser repetition frequency, implementation is simple, and use component is less, while guaranteeing stability, reduce cost.

The embodiment of the invention provides an optical power adjusting method and related equipment, which can reduce the NF (Network Function) of an optical amplifier under the condition that an OSA (Optical Security Association) cannot be additionally arranged, thereby optimizing the OSNR (Optical Signal to Noise Ratio) of an optical transmission link. The method is applied to an optical amplifier, and comprises the following steps: a first amplification module amplifies the optical power of a first optical signal to obtain an amplified first optical signal; the first DGFF attenuates the optical power of the N first wavelengths included in the second optical signal according to the N first optical attenuation values to obtain an attenuated second optical signal, and the second optical signal comprises the amplified first optical signal; the first optical splitter splits the third optical signal to obtain a first sub-optical signal and a second sub-optical signal; the first photoelectric detector performs photoelectric conversion on the first sub-optical signal to obtain a first electric signal; and the controller obtains second control information according to the first electric signal, wherein the second control information comprises a mapping relation between each first wavelength and one second light attenuation value in the N second light attenuation values.

This invention discloses a method for retrieving global ocean optical attenuation coefficients based on remote sensing reflectance. It obtains the remote sensing reflectance at any wavelength below the sea surface and the ratios related to inherent optical quantities using satellite-provided remote sensing data. For clear seawater and relatively clear coastal seawater, the QAA_v5 algorithm is used to obtain the absorption and backscattering coefficients at any wavelength; for turbid coastal seawater, the QAA-RGR algorithm is used. Different models for solving the scattering coefficients are used for different sea areas. The global ocean optical attenuation coefficient is obtained by adding the absorption and scattering coefficients. This invention divides the global ocean into regions and provides models for solving the absorption and scattering coefficients for different regions. It can directly calculate the optical attenuation characteristics of different sea areas using satellite-provided data, improving the reliability of solving the optical attenuation coefficient and enabling dynamic monitoring of the variation of the global ocean optical attenuation coefficient.