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

Table 1

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

	IUCBFM			SVD-IUCBFM
Frequency subband (GHz)	0.2–0.65	0.65–1.1	1.1–2.0	0.2–0.65	0.65–1.1	1.1–2.0
Number of PWs	128	128	128	23	33	54
SVD time (s)	9.55	9.03	8.25	5.61	6.09	8.29
Number of IUCBFs	344	551	809	316	517	706
IUCBFs construction time (s)	216.54	213.27	207.21	98.94	111.94	152.79
Reduced matrix filling (s)	108.27	279.17	564.01	87.56	207.21	418.26
Total time (s)	2135.25	4159.47	7016.52	1919.54	3336.54	5365.49