Mie-T矩阵耦合的沙尘多次散射效应表征与Monte Carlo验证OA

To accurately quantify the attenuation of visible light in urban optoelectronic systems during dust weather,we establish a predictive model that integrates corrections for non-spherical particles,using the Ho-hhot region as a case study.Utilizing Mie scattering theory alongside scanning electron microscopy and en-ergy-dispersive X-ray spectroscopy data from local dust samples,the extinction characteristics of dust particles in typical red green and blue wavebands were calculated.Scattering parameters for non-spherical particles were corrected via the T-matrix method.Photon multiple scattering was then simulated with the Monte Carlo method to systematically compare attenuation rates between single and multiple scattering mod-els.The results demonstrate that the single-scattering model systematically overestimates the attenuation rate,with a maximum error of 18.3％in the blue band.After multiple scattering correction,the attenuation rate de-creased by an average of 12.4％.In this case,when the visibility is 400 meters,the attenuation rate for blue light was approximately 95 dB/km,significantly exceeding the value of 70 dB/km for red light.The hybrid model developed significantly enhances the prediction accuracy for visible light attenuation in dusty environ-ments,elucidating the critical roles of multiple scattering effects.This work provides a reliable theoretical and data-driven foundation for optimizing urban optoelectronic systems in dust-prone conditions.