【摘 要】
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With the increasing demand for navigation,and the establishment of the PNT (Positing Navigation Time) system,the autonomous navigation method based on the atmospheric polarization properties has been
【机 构】
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Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine
论文部分内容阅读
With the increasing demand for navigation,and the establishment of the PNT (Positing Navigation Time) system,the autonomous navigation method based on the atmospheric polarization properties has been one of the hot topics.As atmospheric scattering is dominated by Rayleigh scattering under clear-sky condition,atmospheric radiation polarization picture is stable.Thus,the atmospheric polarization navigation can be effectively under clear sky.However,for turbid atmosphere containing aerosol particles,polarization pictures stability is seriously affected,especially in tropospheric low visibility condition.Under these conditions,the effectiveness of navigation by atmospheric polarization significantly reduces,which becomes the important factor limiting the application of atmospheric polarization navigation in near-surface haze condition.Therefore,analysing the factors of atmospheric polarization properties and the feasibility of navigation by atmospheric polarization in different atmospheric conditions is significant for the study of complex atmospheric conditions polarized radiation and the development of new application fields of atmospheric polarization navigation.This paper describes the research advances about atmospheric polarization properties and its navigation method,and analyses the influence factors to atmospheric radiation polarization properties,including the optical parameters of aerosol particles (such as the complex refractive index and scale spectrum of aerosol particles),atmospheric turbidity,and sun-observation geometry orientation.The feasibility of navigation using atmospheric polarization in troposphere and stratosphere above is further investigation.
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