Far-field pattern
= Far-field pattern
{wiki}
The far-field pattern is the directional coefficient $f_\infty(\widehat{\mathbf r})$ in an outgoing asymptotic field $u_s(\mathbf r)=e^{ikr}f_\infty(\widehat{\mathbf r})/r+O(r^{-2})$.
= Far-field pattern
{wiki}
The far-field pattern is the directional coefficient $f_\infty(\widehat{\mathbf r})$ in an outgoing asymptotic field $u_s(\mathbf r)=e^{ikr}f_\infty(\widehat{\mathbf r})/r+O(r^{-2})$.