Modeling of Coherent Field Attenuation for GNSS Signals Under Broad-leaf Vegetation

Di Hai and Guohao Zhang

Abstract:	This study develops a model for coherent-field GNSS signal attenuation in broad-leaf vegetation, representing the canopy as a spherical volume containing randomly distributed leaves and branches. The specific attenuation parameter is derived using Foldy-Lax multiple scattering theory. Experimental measurements show strong agreement with simulated results, validating the model’s effectiveness in quantifying GNSS signal attenuation through vegetation.
Published in:	Proceedings of the 38th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2025) September 8 - 12, 2025 Hilton Baltimore Inner Harbor Baltimore, Maryland
Pages:	1154 - 1160
Cite this article:	Hai, Di, Zhang, Guohao, "Modeling of Coherent Field Attenuation for GNSS Signals Under Broad-leaf Vegetation," Proceedings of the 38th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2025), Baltimore, Maryland, September 2025, pp. 1154-1160. https://doi.org/10.33012/2025.20319
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