Research Article
A Discrete Dipole Approximation Solver Based on the COCG-FFT Algorithm and Its Application to Microwave Breast Imaging
Figure 5
The relative error of the total solution, condition number of the matrix with on the diagonal, and the condition number of the matrix that has been multiplied by all as a function of the logarithmic difference in permittivity between the bath, and the background. For the permittivity difference scale, corresponds to a background permittivity of and a value of corresponds to a background permittivity of , respectively.