Fast Computation of Born-Approximated Multistatic Scattering

Eden Elbaz, Yaniv Brick

Research output: Contribution to journalArticlepeer-review

Abstract

An algorithm for the fast computation of multistatic scattering patterns, produced by low-contrast inhomogeneous volumetric objects, which satisfy the Born approximation assumption, is presented. The algorithm relies on hierarchical interpolation and aggregation of optimally sampled phase-compensated partial contributions to the scattered field integral. The Born approximation enables the efficient simultaneous computation for ranges of incident and observation angles, as well as excitation frequencies. This leads to a reduction in the asymptotic computational complexity by several polynomial orders of the problem's acoustical size. The algorithm's error controllability and favorable computation time are demonstrated via representative examples.

Original languageEnglish
Pages (from-to)3637-3645
Number of pages9
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume68
Issue number12
DOIs
StatePublished - 1 Dec 2021

Keywords

  • Fast methods
  • multilevel algorithms
  • wave scattering

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