Calculation of angular glint in near field utilizing graphical electromagnetic computing

Abstract

The angular glint in the near field plays an important role on radar tracking errors. To predict it more efficiently for electrically large targets, a new method based on graphical electromagnetic computing (GRECO) is proposed. With the benefit of the graphic card, the GRECO prediction method is faster and more accurate than other methods. The proposed method at the first time considers the special case that the targets cannot be completely covered by radar beams, which makes the prediction of radar tracking errors more self-contained in practical circumstances. On the other hand, the process of the scattering center extraction is omitted, resulting in possible angular glint prediction in real time. Comparisons between the simulation results and the theoretical ones validate its correctness and value to academic research and engineering applications.

Angular Glint Analysis of the 2-D Target Above a Rough Surface Based on Extraction of the Coupling Currents

“…And on this basis polarization was taken into consideration by Kajenski when angular glint was calculated and analyzed [5]. Previous research of angular glint mostly focused on dipoles [2][3][4][5] or canonical targets in free space [6]. However, radar targets cannot be divorced from the background such as sea or earth in practice.…”