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93 results about "Statistical relation" patented technology

A statistical relationship is a mixture of deterministic and random relationships. A deterministic relationship involves an exact relationship between two variables. A random relationship is a bit of a misnomer, because there is no relationship between the variables. A statistical relationship is a mixture of the above two relationships.

Spectral reflectance peak decomposition based quantitative inversion method of hyperspectral remote sensing mineral content

The invention relates to a spectral reflectance peak decomposition based quantitative inversion method of the hyperspectral remote sensing mineral content. The method comprises the seven steps of: 1. reading data in; 2. intercepting a reflection peak band; 3. converting a reflectance spectrum and an absorption spectrum; 4. carrying out continuum removal on the spectrums; 5. linearly decomposing the spectrums to obtain the mineral spectrum decomposition content; 6. establishing a statistical relationship between the mineral spectrum decomposition content and the real content; and 7. converting the calculated mineral spectrum decomposition content in the step 5 into the real mineral content according to the established statistical relationship in the step 6. The invention can not only be applied to hyperspectral data which is not covered by a mineral absorption spectrum band, but also can be used for hyperspectral data which is covered by the mineral absorption spectrum band in the spectrum band range, carries out quantitative mineral content inversion by comprehensively applying a spectral reflectance peak and an absorption spectrum band and improves the inversion precision and the inversion accuracy. The invention has practical value and broad application potential in the field of hyperspectral remote sensing mineral identification.
Owner:CHINA AERO GEOPHYSICAL SURVEY & REMOTE SENSING CENT FOR LAND & RESOURCES +1

Method for controlling damage of slope pre-splitting blasting digging based on blast vibration test

ActiveCN104390537ACost-effectiveEngineering promotion and application value is goodSeismologyBlastingStatistical relationBlasting vibration
The invention relates to a method for controlling damage of slope pre-splitting blasting digging based on a blast vibration test. The method comprises the following steps: establishing a statistical relation between the blasting particle peak vibration velocity at a plurality of blasting center distances and the damage depth under different altitude difference conditions by utilizing the blasting digging for a few front steps on the basis of the acoustic detection for a slope blasting digging damage area and the corresponding blasting vibration monitoring, and then utilizing the particle peak vibration velocity induced during the slope bench blasting process to forecast the depth of the digging damage area, and offering a control proposal for single-bump explosive quantity. After the relation between the particle peak vibration velocity and the slope blasting digging damage area is established according to a blasting vibration test result of the front steps and the acoustic detection for the damage area, subsequent steps are only subjected to blasting vibration monitoring, and geological data is combined for comprehensively analyzing and adjusting, so that the depth of the slope digging damage area can be determined and the operation is convenient, quick, high-efficient and economical. The rock slope blasting digging damage can be controlled by controlling the maximum single-bump explosive quantity. The method has high engineering popularization and application values.
Owner:WUHAN UNIV

Method for synchronously realizing seismic lithofacies identification and quantitative assessment of uncertainty of seismic lithofacies identification

ActiveCN104749624AUncertainty objective realityReduce evaluation riskSeismic signal processingApplicability domainMaximum a posteriori estimation
The invention relates to a method for synchronously realizing seismic lithofacies identification and quantitative assessment of uncertainty of the seismic lithofacies identification. The method comprises the steps of determining the type of the lithofacies and performing logging lithofacies definition, establishing a rock physical response relation between logging physical parameters and elasticity, establishing a probability statistical relation between the lithofacies and logging attributes, establishing the probability statistical relation of well-seismic scale elasticity parameters and constructing the statistical relation of the lithofacies and the seismic scale elasticity parameters, inverting the information of the probability distribution of the elasticity parameters of a target layer, obtaining the lithofacies probability information of the target layer by combining the inverted probability information of the elasticity parameters of the target layer and the statistical relation of the lithofacies and the seismic scale elasticity parameters, obtaining the maximum posterior probability solution of the lithofacies distribution according to the probability information of the lithofacies and outputting final model parameters. The method is capable of quantitatively characterizing the uncertainty of each link of lithofacies identification and the propagation and accumulation characteristics of the uncertainty in the lithofacies identification process, and also capable of performing uncertainty analysis on the seismic lithofacies identification; as a result, the reservoir evaluation risk is reduced; in short, the method is wide in application range.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Wind power station short-term power prediction method

The invention provides a wind power station short-term power prediction method. The wind power station short-term power prediction method comprises the steps that 1 a BP neural network is used for establishing the historical data statistics relationship between forecasting factors of a mesoscale numerical value weather forecast and the actually-measured wind speed, at the position of the hub height, of a single fan to generate a wind speed statistics downscaling model of the single fan; 2 according to the forecasting factors of the mesoscale numerical value weather forecast of a wind power station in the following 48 hours and the statistics downscaling model of the single fan in the step 1, the predicted wind speed, at the position of the hub height, of the single fan is generated; 3 according to historical data of the actually-measured wind speed of the single fan and the actually-measured power of the single can, a speed-power characteristic curve of the single fan is fit and the short-term predicted power of the fan is obtained through the combination of the predicted wind speed, at the position of the hub height, of the single fan. Therefore, by means of the wind power station short-term power prediction method, the uncertainty caused by the fact that the mesoscale resolution ratio is insufficient is reduced, and the short-term powder prediction precision of the wind power station is obviously improved.
Owner:ZHONGNENG POWER TECH DEV

Remote sensing retrieval method for concentration of particulate organic carbon of turbid water body

The invention discloses a remote sensing retrieval method for a concentration of particulate organic carbon of a turbid water body, belonging to the field of remote sensing retrieval of water quality parameters. The remote sensing retrieval method comprises the following steps: acquiring the concentration of water body suspended matters on a surface layer of a research region, the concentration of particulate organic carbon (POC) and data of particle size distribution (PSD) of the suspended matters; acquiring field remote sensing reflectivity and a research region remote sensing image; and processing field remote sensing spectroscopic data so as to acquire a sensitive band of the remote sensing retrieval, establishing a statistical relation among the concentration of particulate organic carbon, the concentration of the suspended matters and the particle size distribution of particulate matters, a remote sensing retrieval model of the concentration of the suspended matters and a remote sensing retrieval model of the particle size distribution, and combining the statistical relation and the two models so as to establish a remote sensing retrieval method for particulate organic carbon based on the concentration and particle size distribution of the suspended matters. According to the remote sensing retrieval method for the concentration of particulate organic carbon of the turbid water body, the physical base of the remote sensing retrieval model can be directly reflected, and the precision of remote sensing retrieval can be improved.
Owner:HANGZHOU NORMAL UNIVERSITY
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