Combination of MLFMA and ACA to Accelerate Computation of Scattering from Underground Targets

Table 3

Computational parameters of bistatic RCS from a ball under the rough surface.

			MoM-MLFMA			MoM-MLFMA-AC0A
			Memory for nondiagonal block matrices	Number of iterations	Iteration time (s)	Memory for nondiagonal block matrices	Number of iterations	Iteration time (s)
2.0	100	7200	309.4 MB	375	51	125 MB	374	30
4.0	100	7200	309.4 MB	670	168	221 MB	668	104
2.0	300	22480	3.39 GB	274	307	536 MB	273	191
4.0	300	22480	3.39 GB	573	985	1.67 GB	573	699