Time-Domain Deconvolution Removes the Effects of Near-Field Scatterers

摘要

This paper studies a deconvolution problem that models the removal of interference caused by objects in the near field of antennas. Such interference affects antennas on complicated objects, such as ships and aircraft. Infinitely many time-domain deconvolution algorithms are considered here, of which the best one -- being stable and O(h2) accurate, and O(h4) accurate after Richardson extrapolation -- may compete with Fourier and Laplace methods. Special care is taken to find an algorithm that accommodates discontinuity-related numerical noise in finite-difference-time-domain data.