| Citation: | TANG Mu-yun, CHAO Ke-fu, HUA Wen-cheng, CUI Cun-sen. Characterization of multiple scattering effects in dust particles via Mie-T-Matrix coupling and Monte Carlo verification[J]. Chinese Optics. doi: 10.37188/CO.2025-0126
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To accurately quantify the attenuation of visible light in urban optoelectronic systems during dust weather, we establishe a predictive model that integrates corrections for non-spherical particles, using the Hohhot region as a case study. Utilizing Mie scattering theory alongside scanning electron microscopy and energy-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 models. 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 decreased by an average of 12.4%. In this case, 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 environments, 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.
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