MOMENTS OF INTENSITY AND LOG INTENSITY - NEW ASYMPTOTIC RESULTS FOR WAVES IN POWER-LAW MEDIA

We study the statistical moments of intensity and log intensity for waves in three-dimensional random media with pure power-law spectra. Results from both asymptotic calculations and numerical simulations are presented for an incident plane wave through multiple phase screens with a power-law index of 1.7. An improved asymptotic scheme is applied to the asymptotic calculation. This scheme reorganizes the conventional strong-scattering series into a new series that converges more rapidly. The first-order term in the new series is often sufficient for quantitatively useful answers in the strong-scattering regime.