Multi-factor atmospheric polarized modeling method based on earth surface Fresnel reflection
An atmospheric polarization and modeling method technology, applied in the field of physical optics, can solve the problems of not considering changes in atmospheric polarization information, affecting the accuracy of atmospheric polarization model modeling, and incomplete atmospheric polarization information.
Inactive Publication Date: 2013-01-09
HEFEI UNIV OF TECH
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However, in the patent specification with the application number of 200910116484.5 and the existing atmospheric polarization mode modeling methods, most of them model the single-factor atmospheric polarization without considering the change of the atmospheric polarization information by the surface reflection, which results in The incompleteness of atmospheric polarization information affects the accuracy of modeling the actual atmospheric polarization mode
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[0084] see figure 1 , in this embodiment, first, input the scattered light field intensity of the measured point after Rayleigh scattering under natural light incident, in the northeast sky coordinate system, decompose the scattered light into two beams with different intensities, and the vibration directions of the electric field are perpendicular to each other, Scattered linearly polarized light without a fixed phase relationship. Using the rotation relationship matrix between the celestial coordinate system and the northeast celestial coordinate system, the intensity component of the incident ray polarized light field is obtained. Then, in the celestial coordinate system, the incident ray polarized light is decomposed into four incident light field intensity components in the directions parallel to the incident plane and perpendicular to the incident plane, and based on the Fresnel reflection theory, the reflected light field intensity components are obtained Vector size; ...
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The invention discloses a multi-factor atmospheric polarized modeling method based on earth-surface Fresnel reflection, which is characterized in that a multi-factor atmospheric polarized model is obtained by utilizing a single-factor atmospheric polarized model based on Rayleigh scattering in a modeling method of an earth-surface Fresnel reflection model. The method comprises the following stepsof: describing light waves by adopting Stokes vectors, overlaying the Stokes vectors of reflected light with the Stokes vectors of scattered light, acquiring a polarization degree by utilizing the overlaid Stokes vectors, and acquiring a polarization direction by utilizing the vector direction of the electric-field strength weight of the overlaid reflected light to obtain the distribution model of world-wide multi-factor atmospheric polarized information, thereby improving the accuracy and the completeness of the atmospheric polarized model.
Description
technical field [0001] The invention belongs to the field of physical optics, and relates to a modeling method of an atmospheric polarization mode, in particular to a multi-factor atmospheric polarization modeling method based on surface Fresnel reflection. Background technique [0002] Before entering the earth's atmosphere, sunlight, as a natural light source of transverse electromagnetic waves, has no polarization. During the transmission of sunlight after entering the atmosphere, due to the scattering of light by air molecules and aerosol particles in the atmosphere and hydrosphere, as well as the reflection of light by water surfaces and other surfaces such as soil, rocks or vegetation, etc. The polarized light forms a specific polarization distribution, called the atmospheric polarization mode. [0003] Atmospheric polarization mode is one of the important properties of the earth, which can provide the direction field and intensity field information of polarized light...
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IPC IPC(8): G06F17/50
Inventor 高隽谢昭王玲妹纪松林金金
Owner HEFEI UNIV OF TECH