Recovery of rough surface in ducting medium from grazing angle scattered wave
Rath Spivack, O
Journal of Applied Physics
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Chen, Y., Rath Spivack, O., & Spivack, M. (2018). Recovery of rough surface in ducting medium from grazing angle scattered wave. Journal of Applied Physics, 124 (8) https://doi.org/10.1063/1.5044605
A method is developed for rough surface reconstruction using fields scattered at grazing angles in a medium with a linearly varying refractive index and Neumann boundary condition. This regime represents a ducting medium, bounded by a perfectly conducting surface with a TM incident field or an acoustically hard surface. This significantly extends the iterated marching method, based upon the parabolic integral equation for forward-scattered field components [J Opt Soc Am A, 35 (2018) 504-513]. The approach, which uses a fixed frequency, is able accurately to recover multiscale surfaces, and is found to be robust with respect to measurement noise and localized perturbations.
External DOI: https://doi.org/10.1063/1.5044605
This record's URL: https://www.repository.cam.ac.uk/handle/1810/280216