Infrared smoke screen spectrum transmittance simulation method
A technology of spectral transmittance and simulation method, which is applied in the direction of design optimization/simulation, special data processing application, etc., can solve the problems of high spectral resolution and slow calculation speed, so as to improve calculation efficiency, improve algorithm calculation speed, meet The effect of real-time simulation requirements
Active Publication Date: 2021-06-25
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology
The composition of the smoke screen is complex, including a variety of gases and particulate matter components, which have strong spectral selectivity, so when calculating the spectral transmittance, a higher spectral resolution is required, which greatly reduces the calculation speed
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Embodiment 1
[0027] like figure 1 As shown, the infrared smoke spectral transmittance simulation method provided by the embodiment of the present invention includes the following steps S1 to S3.
[0028] In step S1, a normalization matrix X of m spectral bands corresponding to n smoke component data is established, and p principal component vectors under the m bands of the normalization matrix X are determined. In this step, the principal components of the typical bands are established, and the entire spectral band is divided into m bands, and the corresponding n smoke components form the data matrix X, and then the eigenvector of the covariance matrix whose dimension is m m is used according to the row characteristics The size of the value is arranged in descending order to form the m matrix A. The purpose of dimensionality reduction is achieved by replacing the m original values with the first p principal components, that is, determining the first p principal components as the princip...
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The invention relates to the technical field of smokescreen spectrum transmittance simulation analysis, and provides an infrared smokescreen spectrum transmittance simulation method, which comprises the following steps: establishing a standardized matrix X of m spectrum bands corresponding to n pieces of smokescreen component data, and determining p principal component vectors under the m bands of the standardized matrix X; obtaining the infrared smoke screen spectrum transmittance of the k typical wavebands, determining PC score subsets of p principal component vectors corresponding to the k typical wavebands according to the spectrum transmittance of the k typical wavebands, wherein PC scores are correlation values of the p principal component vectors and all smoke screen component data; and according to the p principal component vectors and the PC score subsets thereof, determining the infrared smoke screen spectrum transmittance of the m spectral bands, the calculation efficiency of the infrared smoke screen spectrum transmittance can be improved, and the real-time simulation requirement can be met.
Description
technical field [0001] The invention relates to the technical field of smoke screen spectral transmittance simulation analysis, in particular to an infrared smoke screen spectral transmittance simulation method. Background technique [0002] Spectral transmittance is an important indicator for evaluating the shading effect of smoke screens, and it is also an important physical quantity calculated in real-time simulation of interference characteristics. The composition of the smoke screen is complex, including a variety of gases and particulate matter components, which have strong spectral selectivity, so when calculating the spectral transmittance, a higher spectral resolution is required, which greatly reduces the calculation speed. [0003] Therefore, in view of the above deficiencies, it is necessary to provide a simulation method for infrared smoke spectral transmittance that can improve the calculation efficiency of infrared smoke spectral transmittance and meet the nee...
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Login to View More IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 朱希娟周越马静吴杰段然
Owner BEIJING INST OF ENVIRONMENTAL FEATURES