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A new algorithm, the Sparsified Adaptive Cross
Approximation (SPACA) is presented for fast iterative solution
of the Method of Moments linear system. Like ordinary ACA, it
is a completely kernel-independent method, but it is faster and
yields a higher compression rate than ordinary ACA, without
compromising the accuracy. As an example, the RCS of a
perfectly conducting sphere is computed using up to 786,432
basis functions. It is shown that SPACA exhibits close to NlogN
complexity for this problem.
CitationHeldring, A. [et al.]. Sparsified ACA for accelerated iterative solution of the MoM linear system. A: Iberian Meeting on Computational Electromagnetics. "Iberian Meeting on Computational Electromagnetics: VIII EIEC: November 2-4 2011 Sesimbra, Portugal". Sesimbra, Lisboa: 2011, p. 13-15.
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