TY - GEN
T1 - Hierarchical Interpolation Algorithm for Fast Born Approximation Analysis of Scattering by Electrically Large Objects
AU - Elbaz, E.
AU - Brick, Y.
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - An algorithm for the fast computation of Born approximation scattered field integral for electrically large low-contrast inhomogeneous targets is presented. The algorithm takes advantage of the integrand's phase in order to efficiently sample partial the contributions to the scattered field, in both the source and observer coordinates. These contributions are gradually interpolated and aggregated, with appropriate phase factors, in a multilevel fashion, in order to obtain the total field integral, sampled at a desired density. This reduces the cost of field integrations by three orders of the scatterer's electrical length. For the far-field and incident plane wave scenario, the computations are further simplified and reduced to that of a single scalar component.
AB - An algorithm for the fast computation of Born approximation scattered field integral for electrically large low-contrast inhomogeneous targets is presented. The algorithm takes advantage of the integrand's phase in order to efficiently sample partial the contributions to the scattered field, in both the source and observer coordinates. These contributions are gradually interpolated and aggregated, with appropriate phase factors, in a multilevel fashion, in order to obtain the total field integral, sampled at a desired density. This reduces the cost of field integrations by three orders of the scatterer's electrical length. For the far-field and incident plane wave scenario, the computations are further simplified and reduced to that of a single scalar component.
KW - Born approximation
KW - Fast methods
KW - Multilevel algorithm
KW - Wave scattering
UR - http://www.scopus.com/inward/record.url?scp=85123677180&partnerID=8YFLogxK
U2 - 10.1109/COMCAS52219.2021.9629036
DO - 10.1109/COMCAS52219.2021.9629036
M3 - Conference contribution
AN - SCOPUS:85123677180
T3 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
SP - 185
EP - 187
BT - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
PB - Institute of Electrical and Electronics Engineers
T2 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
Y2 - 1 November 2021 through 3 November 2021
ER -