Polarization transmission characteristic test and simulation verification method for non-spherical multiple scattering medium

Abstract

The invention discloses a polarization transmission characteristic test and simulation verification method for a non-spherical multiple scattering medium, belongs to the field of polarization transmission detection. The method includes: preparing a non-spherical particle environment in an experimental test and measuring the morphology and size of non-spherical particles by an electron microscope;testing the concentration of a non-spherical smoke medium in a smoke box, establishing input parameters in the simulation program, and calculating parameters such as a scattering matrix, a scatteringcoefficient, an absorption coefficient and the like of single scattering of the non-spherical medium by adopting a T matrix method due to the limitation of a Monte Carlo method on non-spherical particle simulation in analogue simulation; and then using a Monte Carlo method to carry out multiple simulations to achieve the purpose of mutual verification of simulation and experiments. According to the invention, the accuracy of multiple scattering experiment tests of non-spherical particles can be improved, and the transmission application of polarized light in a non-spherical medium is expanded.

Description

technical field [0001] The invention belongs to the field of polarization transmission detection, and in particular relates to a polarization transmission characteristic test and simulation verification method of a non-spherical multiple scattering medium. Background technique [0002] The low-contrast phenomenon caused by the haze environment makes it impossible to accurately obtain target information with ordinary intensity imaging, and military identification and detection and traffic safety are all greatly affected. At this time, compared with traditional imaging technologies (intensity imaging, spectral imaging), Since polarization imaging adds polarization dimension information that cannot be reflected by intensity and spectrum on the basis of intensity imaging, it can significantly enhance the difference between the target and the background, and increase the operating distance in environments such as fog and haze, thus becoming an effective means to solve the above pr...

AI Technical Summary

Problems solved by technology

[0005] For the problem of multiple scattering of non-spherical particles in the haze environment, due to the limitation of the current experimental conditions, the research is mostly limited to the simulation of single non-spherical particle scattering, and the accuracy of the non-spherical particle multiple scattering results cannot be verified.

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