NFIPO based technique for near-field angular glint calculation of radar targets

Abstract

Based on recently developed near-field iterative physical optics (NFIPO) and the Poynting vector method, near-field angular glint calculation formulations are derived and applied to perfect electric conducting (PEC) radar targets, which are of great importance for radar seeker applications. Numerical results are presented with new findings to demonstrate the usefulness of the proposed technique.

Angular glint calculation and analysis of radar targets via adaptive cross approximation algorithm

“…Set the distance vector from the source point to the field point as R = r − r , and R = |R|. The exact fields [7,29] radiated by the equivalent electric and magnetic currents are…”

“…Whereas near-field angular glint calculation is of much more importance in radar-seeker applications [6]. Recently, [7] attempted to calculate near-field angular glint based on the near-field iterative physical optics (NFIPO) method, but its accuracy is not satisfactory due to the intrinsic limitation of the magnetic field integral equation (MFIE) [8].…”

“…The acceleration and memory savings of the ACA algorithm come from the partial assembly of the rank-deficient interactions between the subdomains. This paper is an extension of [7,18]. In this context, by integrating the open-source ACA algorithm software framework [19] with our in-house MoM codes, accurate object surface equivalent currents can be obtained.…”

Fast Estimated Calculation of Wideband Radar Angular Glint Using Single Frequency Method

“…And by introducing the scattering models [9]- [10], the angular error had been estimated and simulated. The deviation of angular glint could also be calculated in the near field [11]- [12] based on the method of near-field iterative physical optics. The reduction or suppression [13]- [15] is also the important issue of radar angular glint.…”