Abstract
Imaging of Rough Surfaces by Near-field Measurement
Highlights
Microwave imaging uses microwaves as a transmitted signal, raising the problem of electromagnetic backscattering
It can be observed that even if there is a gap between the initial estimate and the correct value, good reconstruction results can still be obtained for near-field measurement by the self-adaptive dynamic differential evolution (SADDE) method
We discuss the application of inverse scattering to non-flat surfaces
Summary
Microwave imaging uses microwaves as a transmitted signal, raising the problem of electromagnetic backscattering. Remote sensing based on electromagnetic inverse scattering is a measurement technique used in microwave imaging. This technology uses microwaves to illuminate the scattering, the reflected field is sensed using an electromagnetic sensor This method has been widely used in telemetry, imaging of buried objects, and non-destructive testing for many years.[1,2,3,4,5] Compared with other imaging technologies, the cost of equipment is lower, making this technology very valuable. Owing to the rapid improvement of computer processor performance and the development of numerical methods, we can use a measured electromagnetic field to reconstruct the shape of a conductor or the dielectric constant of an object. In Ref. 10, the spectral expression for received scattered waves was used to reconstruct a lossy rough surface.
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