Efficient Computation of Wideband RCS Using Singular Value Decomposition Enhanced Improved Ultrawideband Characteristic Basis Function Method

Table 2

Number of PWs and IUCBFs and computational time of the cylinder.

	IUCBFM			SVD-IUCBFM
Frequency subband (GHz)	0.1–0.575	0.575–1.05	1.05–2.0	0.1–0.575	0.575–1.05	1.05–2.0
Number of PWs	128	128	128	31	48	81
SVD time (s)	82.70	79.27	79.29	65.66	77.32	81.86
Number of IUCBFs	402	649	1044	334	549	951
IUCBFs construction time (s)	1318.23	1315.72	1311.26	875.08	1012.41	1252.8
Reduced matrix filling (s)	5684.77	9976.09	15501.19	4293.39	7150.81	12070.43
RCS calculation time (s)	63203.93	102016.86	161399.16	48847.90	77564.81	125723.17