Secondary emission characteristics of resonant perfectly conducting objects of simple shape

Calculation of scattering characteristics of aerial radar objects of resonant sizes based on iterative algorithm

“…In this case different methods of mathematical simulation are used: FDTD method [3,4], surface integral equations (IE) [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], and also high-frequency asymptotic methods [21][22][23][24].…”

“…The methods are applied for determining the densities of surface electric current that are based on solving IE of magnetic field (MFIE) [5,6,[8][9][10][11][12][14][15][16][17][18][19], electric field (EFIE) [5, 6, 11-14, 17, 20], and also based on linear combination of these equations, i.e. combined field IE (CFIE) [5,[10][11][12]20].…”

“…The application of IE method for calculating SC of complex objects involves the need of taking into account the following peculiarities [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]:…”

“…Thus, the analysis of [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] indicates that at present the universal methods for solving IE are not available. We refer here to the methods making it possible to calculate with high accuracy SC of objects containing elements, the electric sizes of which vary in wide range.…”

“…The developed numerical method implies the elimination of resonances associated with natural oscillations of the internal area of object by imposing additional condition implying the EMF inside the scatterer is equal to zero [19].…”