Passive Array Imaging in Random Media
نویسندگان
چکیده
منابع مشابه
Passive Array Correlation-Based Imaging in a Random Waveguide
We consider reflector imaging in a weakly random waveguide. We address the situation in which the source is farther from the reflector to be imaged than the energy equipartition distance, but the receiver array is closer to the reflector to be imaged than the energy equipartition distance. As a consequence, the reflector is illuminated by a partially coherent field and the signals recorded by t...
متن کاملImaging in Random Media
We give a self-contained presentation of coherent array imaging in random media, which are mathematical models of media with uncertain small scale features (inhomogeneities). We describe the challenges of imaging in random media and discuss the coherent interferometric (CINT) imaging approach. It is designed to image with partially coherent waves, so it works at distances that do not exceed a t...
متن کاملImaging in Random Media with Convex Optimization
We study an inverse problem for the wave equation where localized wave sources in random scattering media are to be determined from time resolved measurements of the waves at an array of receivers. The sources are far from the array, so the measurements are a↵ected by cumulative scattering in the medium, but they are not further than a transport mean free path, which is the length scale charact...
متن کاملKinetic Models for Imaging in Random Media
We derive kinetic models for the correlations and the energy densities of wave fields propagating in random media. These models take the form of radiative transfer and diffusion equations. We use these macroscopic models to address the detection and imaging of small objects buried in highly heterogeneous media. More specifically, we quantify the influence of small objects on (i) the energy dens...
متن کاملTransport-Based Imaging in Random Media
This paper derives a radiative transfer equation from first principles to model the energy density of (mono-frequency) high frequency waves propagating in a random medium composed of localized scatterers. The correlation length of the random scatterers is small compared to the overall distance of propagation so that ensemble averaging may take place. The paper also considers the detection and i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Computational Imaging
سال: 2018
ISSN: 2333-9403,2334-0118,2573-0436
DOI: 10.1109/tci.2018.2848478