74 results about "Albedo" patented technology

The invention relates to the technical field of image processing, in particular to a remote sensing monitoring method and system for cultivated land protection, and the method comprises the following steps: obtaining a remote sensing image sequence of a cultivated land region at a differential time node, extracting pixel gray values of the same land parcel, arranging the pixel gray values according to time, calculating the ratio of a difference value between adjacent frames to an intra-frame gray average value, and obtaining a remote sensing image sequence; and marking positions continuously exceeding the fluctuation reference ratio, and generating a pixel region set. According to the method, a sampling frequency threshold optimization strategy is adopted, abnormal areas are screened in combination with albedo change rate, short-time fluctuation interference is reduced, time sequence consistency is enhanced, a solar incident angle and a terrain slope are introduced to calculate projection influence, a slope surface shielding area is eliminated, and space grid marking and boundary integrity judgment are adopted; the method improves the continuity of cultivated land distribution information, combines time sequence analysis, sampling optimization, physical characteristic compensation and spatial consistency correction, enhances the fine recognition of the dynamic change of cultivated land, and improves the monitoring precision and data reliability.

The invention relates to the technical field of glacier information processing, in particular to a glacier surface moraine identification method based on multi-source remote sensing parameters, which comprises the following steps: performing radiation-atmosphere joint correction and geometric-reprojection on optical, thermal infrared, synthetic aperture radar and digital elevation data to generate physical consistency data; deducing the surface temperature under the driving of short-wave albedo, downward radiation and turbulent flux by using a cross-modal visual conversion network and a symmetric neural operator, and obtaining a thickness-existence degree posterior through a normalized flow; an uncertainty field is constructed according to information entropy and variance, a representative pixel unmanned aerial vehicle radar sampling and value measurement backflow fine tuning model is selected by means of quantum annealing, and then a spatial continuous thickness field is output through anisotropic diagram diffusion. According to the method, the future thickness is integrated according to mass conservation in combination with day-by-day weather forecast, and the future thickness is coupled with the existence degree index to form a burst risk grid, so that high-precision and iterable moraine dam early warning is realized.

The present invention provides a quantitative analysis method on influence of black carbon emission to glacier change. The method includes describing a process of dry and wet snow deposition influencing albedo change by taking a specific surface area as a description parameter, calculating an specific surface area increase within a step length at the current moment according to the specific surface area at the previous moment in combination with the change of water content, and deducing to obtain a target specific surface area; establishing a light-absorbing impurity-albedo dynamic evolution model according to the target specific surface area and black carbon concentration; further coupling to an enhanced temperature index model by taking the albedo outputted by the light-absorbing impurity-albedo dynamic evolution model as a link; and calculating mass balance on a surface according to an enhanced temperature index model, and taking the mass balance as an input of a glacier dynamic model to obtain glacier change amount. The established light-absorbing impurity-albedo dynamic evolution model is coupled with the glacier dynamic model containing the enhanced temperature index model and the dynamic process to evaluate the quantitative influence of black carbon emission in history and future on the glacier change.

The invention provides a remote sensing estimation method for high spatial-temporal resolution crop evapotranspiration in an arid and semi-arid region, which comprises the following steps of: acquiring cloudless or less-cloudless high spatial resolution optical remote sensing data of a crop growing season in a research region, and calculating or inverting remote sensing earth surface parameters required by high spatial resolution evapotranspiration; comprising a vegetation index NDVI, a leaf area index LAI, a vegetation coverage FVC, a surface water index LSWI and a surface albedo; the method comprises the following steps: acquiring meteorological reanalysis data of daily scales ERA5-Land and GLADAS of a research area, wherein the meteorological reanalysis data comprises relative humidity RH, average temperature Ta, air pressure Pa, solar short-wave radiation # imgabs0 #, downward long-wave radiation # imgabs1 # and upward long-wave radiation # imgabs2 #; according to the technical scheme, multi-source remote sensing data, an evapotranspiration physical model and a space-time fusion technology based on evapotranspiration characteristics are utilized, and estimation of high space-time resolution evapotranspiration of the arid and semi-arid agricultural areas is achieved.

The invention relates to a method for calculating the degree of polarization of complex space debris, in particular to a method for calculating the degree of polarization of complex space debris based on a micro-facet pBRDF model, and solves the technical problem that an existing method for calculating the degree of polarization is poor in authenticity and accuracy. According to the complex space debris polarization degree calculation method based on the micro-facet pBRDF model provided by the invention, aiming at the characteristics of multi-shape and multi-material coupling of complex space debris, on the basis of the modeling thought of complex refractive index, specular reflection, diffuse reflection and volume scattering of different structural materials of the complex space debris; the albedo projection area is adopted as a reflection contribution coefficient calculated by the total light intensity of reflected light of the complex space debris, and a micro-surface element pBRDF model of different structures and different reflection contribution coefficients of the complex space debris is established, so that the model is closer to the multi-shape and multi-material characteristics of the real space debris; and the polarization degree of the complex space debris calculated based on the micro-facet pBRDF model is more accurate.

The invention relates to the technical field of remote sensing monitoring and climate analysis, in particular to a high-altitude area surface albedo remote sensing monitoring method and device, and the method comprises the steps: firstly obtaining the spectrum, infrared and topographic data of the surface, carrying out the radiation correction and topographic feature extraction, and generating preprocessing data; thirdly, generating multi-dimensional albedo data by using a multi-level fusion technology and an albedo calculation model, and obtaining joint albedo data through frequency domain and time domain analysis; and finally, generating a high-precision albedo product through a self-adaptive deep learning model and a residual error correction mechanism, and applying the high-precision albedo product to climate monitoring, ecological assessment and disaster early warning of a high-altitude area. According to the method, the accuracy and temporal-spatial resolution of albedo data are effectively improved, and reliable data support is provided for environmental research of high-altitude regions.

The invention discloses an earth surface short-wave radiation product production method and device and a long-short-term memory network training method and device, and relates to the technical field of aerospace, and a specific implementation scheme is as follows: extracting a first short-wave radiation data set and a second short-wave radiation data set which are aligned in time from first earth surface short-wave radiation data collected by a satellite; acquiring a photovoltaic short-wave radiation data set which is acquired by a ground photovoltaic radiometer and is aligned with the first short-wave radiation data set in time; determining an albedo data set based on the satellite albedo product and the surface land cover product; obtaining an input short-wave radiation data sequence based on the first short-wave radiation data set, the second short-wave radiation data set, the albedo data set, the photovoltaic short-wave radiation data set and the ground photovoltaic radiometer coordinate vector point; inputting the input short-wave radiation data sequence into a pre-trained long short-term memory network to obtain an initial earth surface short-wave radiation product; and obtaining a target earth surface short-wave radiation product based on the initial earth surface short-wave radiation product.

The invention discloses a deep learning inversion method and system based on physical constraint reflectivity, and an electronic device. The method comprises the following steps: constructing a deep neural network model; hyperspectral remote sensing sample data are input into the deep neural network model, and the transmittance product combination parameter sub-model, the atmospheric intrinsic reflectivity sub-model and the atmospheric hemisphere albedo sub-model are respectively subjected to model training by utilizing the hyperspectral remote sensing sample data; carrying out model training on the physical inversion model through a physical constraint formula; and S3, acquiring hyperspectral remote sensing data of the research area, inputting the hyperspectral remote sensing data into the deep neural network model, and predicting and outputting the atmospheric roof reflectivity. According to the method, the parameter model is innovatively constructed, the transmittance product combination parameter, the atmospheric intrinsic reflectivity and the atmospheric hemisphere albedo are respectively predicted by means of the parameter model, and the output atmospheric top reflectivity is efficiently and rapidly predicted based on the constructed physical radiation transfer equation by means of the three parameters. The method has the advantages of high prediction efficiency and high precision.

The invention discloses a forest accumulated snow albedo inversion method, and relates to the technical field of remote sensing, and the method comprises the steps: selecting a forest accumulated snow bidirectional reflection model SFBR2 as a forward model; extracting a forest accumulated snow area through the ground cover type product and the accumulated snow cover product; randomly generating a plurality of sample points in the forest accumulated snow area, and extracting input features of all the sample points; based on the input feature sample and the forest snow bi-directional reflection model SFBR2, an optimization algorithm is adopted for inversion to obtain a target variable; constructing a training data set in combination with the input features and the target variables; training a random forest model based on the constructed data set, and adopting a grid search algorithm for optimization; and a long-term time sequence image set containing input features is constructed on a GEE platform, the optimized random forest model is applied to the image set, and the albedo of the black space and the white space of the forest accumulated snow is accurately inverted. According to the method, the precision and the calculation speed of an inversion result can be remarkably improved.

The field of the invention is surface albedo modification which applies to modifying the surface of areas of the earth to increase albedo. The invention relates to a means of preserving and restoring glaciers that are shrinking or receding due to climate change. Global warming has led to widespread shrinking of the cryosphere, with mass loss from ice sheets and glaciers. The shrinking of the cryosphere is accelerated by the ice-albedo feedback loop. The invention is a method of modifying the surface of a glacier by covering portions of it with highly reflective granules to increase albedo and reduce the melting of the glacier due to solar radiation. The invention may be used to preserve or restore glaciers and ice sheets that are melting due to climate change.

The present application relates to the technical field of image processing, in particular to a remote sensing monitoring method and system for cultivated land protection, comprising the following steps: acquiring a remote sensing image sequence of a cultivated land area at different time nodes, extracting the pixel gray value of the same land block and arranging it according to time, calculating the ratio of the difference value between adjacent frames and the gray mean value in the frame, marking the position continuously exceeding the fluctuation reference ratio, and generating a pixel region set. In the present application, by adopting a sampling frequency threshold optimization strategy, combining the albedo variation rate to screen abnormal areas, reducing short-term fluctuation interference, enhancing time sequence consistency, introducing the solar incident angle and terrain slope calculation projection influence to eliminate the slope shielding area, using spatial grid marking and boundary integrity judgment to improve the coherence of cultivated land distribution information, combining time sequence analysis, sampling optimization, physical property compensation and spatial consistency correction to enhance the fine identification of cultivated land dynamic change, and improving the monitoring accuracy and data reliability.

The application discloses a kind of for satellite in-orbit real-time cloud detection fast cloud determination method, belong to optical remote sensing image processing field, the method utilizes the principle of cloud top reflection sunlight, by establishing look-up table in ground platform, the method is realized in-orbit fast cloud determination by storing look-up table information in cloud determination load computing platform.The application according to the reflectivity of cloud layer in visible light compared to ground object in remote sensing image is higher, the thicker cloud layer is, the stronger reflection ability is, the greater albedo is, by establishing the relationship between the luminance information represented by observation instrument response DN value and cloud optical thickness, the cloud optical thickness is inverted by response DN value, to judge the cloud coverage of observation target area according to cloud optical thickness, in the case where guaranteeing identification accuracy, the speed of satellite in-orbit cloud detection is effectively improved.

The invention discloses a thermal performance analysis method for a protective layer of a lunar base and a protective layer structure. The method comprises the following steps: establishing a thermal balance equation including solar radiation, lunar internal heat, non-blackbody radiation and lunar albedo radiation; performing thermal analysis based on a heat transfer theory basic theory equation and a heat balance equation to obtain a thermodynamic micro-equation of the lunar surface and the protective layer; solving the obtained thermodynamic micro-equation to obtain temperature field distribution; determining the relationship between the lunar soil protective layer thickness and temperature fluctuation based on finite element analysis; and determining the thickness of the lunar soil protective layer based on the relationship between the thickness of the lunar soil protective layer and temperature fluctuation, and constructing the protective layer based on the determined thickness of the lunar soil protective layer. By adopting the method and the protective layer, the protective capability of the protective layer structure is improved.

The invention relates to a low-orbit moonlet constellation visible near-infrared radiation stability verification field construction method, which comprises the following steps: firstly, carrying out radiation stability verification field site selection by adopting AERONET average aerosol optical thickness AOD in recent 10 years and ground feature uniformity indexes, and collecting verification field latitude and longitude, ground feature types and geographical environments; the method comprises the following steps: collecting visible near-infrared TOA radiance data of a long-time sequence low-orbit moonlet constellation, actually measuring AOD, DEM and the like in combination with MODTRAN and AERONET, and obtaining the surface reflectivity of a verification field by adopting a 3-albedo method; and fitting each verification field BRDF coefficient based on the surface reflectance data set and a kernel-driven semi-empirical model or a Stayer-Suttles model so as to construct a verification field BRDF lookup table. According to the method, the problems of long revisit period and long characteristic data set collection span time of the high-resolution satellite are solved, and the constructed visible sensor radiation stability verification field provides data support for constellation visible load normalized radiation performance monitoring and radiation consistency verification.

The present invention provides a method for constructing a sand or dust emission parameterization scheme based on surface albedo, which belongs to the field of sand or dust numerical simulation. The method comprises: based on wind tunnel experiments, performing stress measurement and light radiation measurement on a study area, and constructing a frictional wind speed calculation model; dividing the study area into grids, obtaining the surface albedo of each grid by acquiring satellite remote sensing data of each grid, and calculating using the frictional wind speed calculation model to obtain the frictional wind speed of each grid; constructing a sand or dust emission formula, and substituting the frictional wind speed of each grid into the sand or dust emission formula to calculate a sand or dust emission inventory for each grid, thereby completing the construction of the sand or dust emission parameterization scheme. The present invention solves the problems that simulation results and measured results of existing sand or dust emission parameterization schemes are uncertain, and are subject to real-time limitations and spatial singleness limitations.

The present invention relates to a shortwave radiation full-factor integrated remote sensing estimation method and system, wherein the method comprises: using the albedo of the acquired remote sensing observation data as the input of a pre-constructed simulation library, obtaining the radiation brightness of the blue, green and red bands at the top of the atmosphere or a certain height based on the atmospheric parameters in the simulation library; comparing the radiation brightness obtained by the simulation library with the radiation brightness of the acquired remote sensing observation data, and then matching the atmospheric parameters that meet the preset conditions in the simulation library according to the comparison result; and analyzing and obtaining the full elements of shortwave radiation according to the albedo and the atmospheric parameters that meet the preset conditions. The present invention proposes a new idea of ​​shortwave radiation full-factor integrated remote sensing estimation, which can realize the synchronous and high-precision estimation of 8 types of shortwave radiation through the radiation brightness data of simulation data and remote sensing data, and the present invention does not require atmospheric parameters such as cloud detection and aerosols, and is applicable to all weather and global scales.

The invention relates to the technical field of atmospheric remote sensing monitoring, discloses a hyperspectral atmospheric methane concentration inversion method and system for a high-aerosol scene, and solves the problems of low inversion precision and poor adaptability of a hyperspectral imager in a high-aerosol heterogeneous earth surface in an existing method. The method comprises the following steps: acquiring and processing atmospheric parameters and multiband surface albedo data, and constructing a radiation transmission model to output a forward simulation vector; based on CLARS-GFIT, constructing an optical absorption coefficient lookup table of methane and interference gas containing different temperatures and pressures; correcting the forward simulation model by using GIFT3 to quantify the aerosol influence, and generating a forward simulation spectrum in combination with a spectral response function; and adjusting the state variable to converge through an iterative maximum posteriori algorithm to obtain the methane concentration. The method improves the inversion precision of a high aerosol scene, adapts to heterogeneous earth surfaces such as a coal mine area, matches AHSI characteristics, gives consideration to efficiency, and can provide support for methane point source monitoring.

The invention provides a brightness temperature simulation calculation method conforming to a radiation transfer theory. The method comprises the following steps: establishing a radiation transfer model based on a radiance Stokes vector in a (Il, Ir, U, V) T form; collecting radiance simulation parameters; if the radiation transmission model is a scalar radiation transmission model, the atmospheric thermal radiation is a vector radiation transmission model, and if the radiation transmission model is a vector radiation transmission model, the atmospheric thermal radiation is obtained by calculating atmospheric particle scattering phase function information, atmospheric single scattering albedo, surface reflectance information and surface emissivity according to radiance simulation parameters; substituting the radiance simulation parameter, the atmospheric thermal radiation, the atmospheric particle scattering phase function information, the atmospheric single scattering albedo, the surface reflectance information and the surface emissivity into a radiation transmission model for calculation to obtain a radiance simulation result; and converting the simulation result of the radiance into the brightness temperature. The invention further provides a brightness temperature analog calculation device and equipment and a storage medium. The brightness temperature simulated by the method is consistent with a theoretical value.

As water body signals are generally less than 5%, this paper proposes a multispectral remote sensing random optimal ratio logarithmic water depth inversion method. It comprehensively considers the influence of solar spectrum, total upward scattering rate, solar zenith angle, global total transmittance, vertical irradiance and total spherical albedo, constructs an atmospheric coupled radiation calibration correction model to correct the atmospheric and water surface reflectivity, and uses a quotient interpolation tide height correction model to correct the tide height. The FNDWI normalized difference water index accurately extracts water bodies, and the random optimal model effectively extracts sub-datasets. The extreme gradient boosting method optimizes model parameters to obtain the optimal ratio logarithmic model for water depth inversion. Compared with the water depth inversion of the Stumpf model, the R of the water depth inversion of this model is better than that of the Stumpf model. 2 The accuracy is improved by 0.592 and the RMSE is improved by 0.841m.

This invention relates to the field of solar photovoltaic power generation technology and discloses an adaptive angle adjustment method for solar cell modules, comprising the following steps: acquiring average wind speed and original pitch angle signals; performing frequency domain decoupling on the original pitch angle signals; calculating the high-frequency energy integral, low-frequency energy integral, and energy ratio parameter; calculating the actual diffuse reflectance by combining the average wind speed and the high-frequency energy integral; constructing a theoretical radiation model to obtain the optimal target tilt angle; extracting the radiation sensitivity gradient; calculating the tracking error between the actual tilt angle and the optimal target tilt angle; determining the actual dead zone by combining the energy ratio parameter and the radiation sensitivity gradient; and outputting control commands or drive commands based on the relationship between the absolute value of the error, the actual dead zone, and the high and low frequency energy integrals. This invention reduces mechanical wear by dynamically filtering out high-frequency wave disturbances through a dead zone and precisely optimizes the reflectance using high-frequency energy correction to improve power generation, achieving a balance between mechanical loss reduction and power generation benefits.

The present invention relates to a method for constructing a visible and near-infrared radiation stability verification field for a low-orbit small satellite constellation. The method first uses the AERONET seasonal average aerosol optical depth (AOD) and ground feature homogeneity index over the past 10 years to select a site for the radiation stability verification field, and collects the latitude and longitude, ground feature type, and geographical environment of the verification field. Long-term series visible and near-infrared TOA radiance data of the low-orbit small satellite constellation are collected, and combined with MODTRAN, AERONET measured AOD, DEM, etc., the 3-albedo method is used to obtain the surface reflectivity of the verification field. Based on the surface reflectivity dataset and a kernel-driven semi-empirical model or Staylor-Suttles model, the BRDF coefficients of each verification field are fitted to construct a BRDF lookup table for the verification field. The method solves the difficulties of long revisit periods for high-resolution satellites and long time spans for collecting characteristic datasets. The constructed visible sensor radiation stability verification field provides data support for normalized radiation performance monitoring and radiation consistency verification of visible payloads of the constellation.

The invention relates to the technical field of freezing ring science, and provides a near-surface icing risk dynamic assessment method for a complex mountainous area, and the method comprises the steps: introducing a radiation terrain factor, an accumulated snow albedo inhibition mechanism, and air cooling correction for a rasterized weather and surface temperature input field, and constructing an energy index; integrating rainfall, snow melting, humidity, wettability and other elements to obtain a humidity index; and introducing a persistent background index of an annual / seasonal scale as a background enhancement factor, thereby integrating the energy index, the humidity index, the background enhancement factor and the icing phase state indication to obtain a corresponding icing risk score. Therefore, a systematic process framework from data preprocessing, physical mechanism diagnosis and hydrological process constraint to risk comprehensive assessment can be provided, and the risk of near-surface icing in a complex mountainous area can be assessed efficiently and accurately.

The present disclosure discloses a surface shortwave radiation product production method and device, and a long short-term memory network training method and device, which relate to the field of aerospace technology. A specific implementation scheme is as follows: extracting a first shortwave radiation data set and a second shortwave radiation data set that are time-aligned from first surface shortwave radiation data collected by a satellite; obtaining a photovoltaic shortwave radiation data set that is time-aligned with the first shortwave radiation data set collected by a ground photovoltaic radiometer; determining an albedo data set based on a satellite albedo product and a surface land cover product; obtaining an input shortwave radiation data sequence based on the first shortwave radiation data set, the second shortwave radiation data set, the albedo data set, the photovoltaic shortwave radiation data set, and the coordinate vector points of the ground photovoltaic radiometer; inputting the input shortwave radiation data sequence into a pre-trained long short-term memory network to obtain an initial surface shortwave radiation product; and obtaining a target surface shortwave radiation product based on the initial surface shortwave radiation product.

The invention discloses a remote sensing moisture index construction method combining surface temperature and short wave infrared information. The method comprises the following steps: step 1, collecting satellite remote sensing data in a research area; step 2, meteorological radiation data collection and spatial interpolation of a research area; 3, performing remote sensing inversion on the surface biophysical parameters; step 4, calculating surface net radiation and soil heat flux; step 5, constructing a remote sensing moisture index combined with the surface temperature and the short wave infrared information; and step 6, performing space-time reconstruction on the remote sensing moisture index. The remote sensing moisture index combining the surface temperature and the short-wave infrared information is constructed, the key defect that a traditional moisture index based on the surface temperature information is greatly influenced by albedo is overcome, and the supersaturation effect of the moisture index based on the short-wave infrared information in a high vegetation coverage area is optimized; satellite thermal infrared and short wave infrared observation information can be fully utilized, and large-range, data-area-free, complex and non-uniform underlying surface moisture index calculation is achieved.

The present invention presents a method for reducing heat caused by climatic influences in various environments, including liquid, solid, or gaseous surfaces. The method comprises the use of LED lighting devices capable of dynamically changing colors, as well as the application of light filtering to target surfaces to reduce albedo reflection rates. By lowering surface temperatures and reducing heat accumulation, this approach offers a versatile solution for managing the effects of heat caused by climatic influences in diverse environmental settings.

The invention provides a method and system for quantifying the influence of lake surface reflection on ozone generation, and relates to the technical field of atmospheric environment monitoring and evaluation.The method comprises the steps that measuring equipment is synchronously arranged at a lake body and a land contrast point, and reflected radiation and meteorological chemical parameters are collected; carrying out calibration, interpolation and abnormal value processing on the data; calculating the albedo of the lake surface and the additional radiation flux relative to the standard underlying surface; calculating a nitrogen dioxide photolysis frequency increment based on the additional radiation flux; a photochemical box model is used for simulating an atmospheric chemical reaction, the species concentration is updated through a time stepping method, and finally the ozone generation increment caused by lake surface reflection is obtained. A unit albedo contribution coefficient is further defined, and quantitative evaluation of the influence of lake surface reflection on ozone generation is achieved. The method overcomes the defect that in the prior art, the lake surface specular reflection enhancement effect is ignored, the contribution of lake surface reflection to ozone generation can be accurately quantified, and a scientific basis is provided for accurate prediction and prevention and treatment of ozone pollution.

The present application relates to a kind of earth and atmospheric scattering characteristic simulation measurement system, it is related to the field of measurement system, including support, radiation source simulation system and mobile platform, radiation source simulation system is erected on support, support is erected on mobile platform;Radiation source simulation system includes light source simulation system and cold background simulation system, light source simulation system provides visible light irradiation, cold background simulation system provides uniform cold background simulation, light source simulation system and cold background simulation system are integrally designed as flat array structure to have simulation uniformity and heat dissipation efficiency, the present application has the whole design of modularization, integration, mobility, realizes the quantitative simulation of earth albedo, atmospheric scattering and cold background, simultaneously, it is combined with accurate motion control and intelligent power control, constructs a set of the advantages of optical measurement background simulation system of adaptation multi-scene.

With the growing adoption of bifacial photovoltaic modules, the albedo, or reflection coefficient of a surface, has become a highly important characteristic in the design of solar power plants using this type of photovoltaic module. This utility model consists of a mobile and portable albedo measuring device that makes it easier to carry out a field evaluation of the different ground covers and their respective solar radiation reflection coefficients. This is a fundamental step in assessing the generation potential calculated during the design phase of photovoltaic plants using bifacial modules. The device of the present utility model consists of a support that holds one end of an arm, a pair of pyranometers installed at the other end of the arm, and the pyranometers are fixed to the arm by a leveling element to guarantee the parallelism of the pyranometers with the analyzed surface.

The invention discloses an in-situ measurement method and system for the albedo of a black cavity wall in an ICF and a computer storage medium, and the method comprises the steps: employing two sets of spatial resolution radiation flow detection equipment to measure the X-ray radiation flow of a light spot region and a re-emission region on the inner wall of a black cavity at the same time in an ICF laser targeting experiment; constructing a black cavity model which is the same as a black cavity used in the ICF laser targeting experiment; endowing the measured X-ray radiation flow of a light spot area and a re-emission area on the inner wall of the black cavity with corresponding areas of the inner wall of the black cavity model and Lambert body emission properties; in the black cavity model, summing the incident X-ray radiation flow of the to-be-detected re-emission region of the black cavity model through a view angle factor to obtain the incident radiation flow of the to-be-detected re-emission region of the black cavity model; and according to the incident radiation flow of the to-be-measured re-emission region of the black cavity model and the measured X-ray radiation flow of the re-emission region, obtaining the black cavity wall albedo. According to the invention, the black cavity structure is not changed, and the measured albedo result is accurate.

The invention discloses a geogas light scattering distribution characteristic simulation method based on spatial non-uniform parameter driving, and belongs to the technical field of scattering characteristic simulation. According to the method, firstly, the conversion relation between a global uniform longitude and latitude grid model and a detector local coordinate system is established, and accurate dispersion and coordinate unification of detection light vectors are achieved; then calculating the spatial relationship between the detection light and the earth surface, and judging a limb or non-limb detection mode; non-uniform parameters such as earth surface albedo, aerosol optical thickness and cloud optical thickness of corresponding positions are rapidly extracted based on a grid index mechanism; and finally, radiance values are calculated by adopting corresponding parameterized models according to different detection modes, and a complete radiance distribution image is synthesized, so that the authenticity and the precision of geogas light scattering distribution characteristic simulation are remarkably improved.