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

Table 3

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

	IUCBFM				SVD-IUCBFM
Frequency subband (GHz)	0.1–0.7125	0.7125–1.325	1.325–2.55	2.55–5.0	0.1–0.7125	0.7125–1.325	1.325–2.55	2.55–5.0
Number of PWs	128	128	128	128	20	24	41	73
SVD time (s)	50.37	50.55	51.09	51.69	30.91	32.73	43.21	73.27
Number of IUCBFs	365	476	728	1341	247	355	617	1191
IUCBFs construction time (s)	1421.12	1430.03	1428.43	1436.81	555.94	612.81	820.01	1072.36
Reduced matrix filling (s)	3416.11	5895.31	9772.54	19744.71	2324.82	5747.99	8591.35	14608.87
RCS calculation time (s)	41810.12	66620.11	105411.94	205182.12	29994.712	48222.06	92996.69	153532.42