Dfunc

pylayers.antprop.diffRT.Dfunc(sign, k, N, dphi, si, sd, xF=[], F=[], beta=1.5707963267948966)

signint

+1 | -1

k : wave number N : wedge parameter dphi : phi-phi0 or phi+phi0 si : distance source-D sd : distance D-observation beta : skew incidence angle xF : array

support of Fresnel function.

Farray

Values of Fresnel function in regard of support if F =[], fresnel function is computed otherwise the passed interpolation F is used.

[1] KOUYOUMJIAN-PATHAK a uniform geometrical theory of diffraction for an edge in a perfectly conducting surface” IEEE AP nov 74 vol 62 N11

e-jnp.pi/4 1

Di= —————— * ———– * F(kla) ([1] eq 25)

2n*racine(2*np.pi*k) np.tan(dphi/n)sin(beta)