Maxim Yurkin

Adding units to the abovementioned command line options should be straightforward. However, it is not that trivial for some other options, like beams, which can accept several parameters of length...

Related is the idea of coarse grid correction preconditioning, mentioned in Simoncini V, Szyld DB. Recent computational developments in Krylov subspace methods for linear systems. Num. Lin. Alg. Appl. 2007;14:1–59....

/cc @alkichigin

Also, a lot of technical details for calculation of periodic Green's tensor (both free-space and reflected one) can be found in Chaumet P.C., Rahmani A., and Bryant G.W. Generalization of...

#101 #85

This will also help with the WKB field as a first guess for the iterative solver (#59) - now it is only possible for propagation along the z-axis.

/cc @cirrusUH

Another idea (not necessarily binary) is to use Extreme Vertices Model (EVM) or the Compact Union of Disjoint Boxes (CUDB). See the thesis by Irving A. Cruz-Matias https://upcommons.upc.edu/handle/2117/95317

This will be a general issue both for compressed and general binary shape formats.

Another related idea is compressive sensing, see e.g. Carin L., Liu D., Lin W., and Guo B. Compressive sensing for multi-static scattering analysis, [_J. Comput. Phys._ **228**, 3464–3477](http://doi.org/10.1016/j.jcp.2009.01.033) (2009).