diff¶

pylayers.antprop.diffRT.diff(fGHz, phi0, phi, si, sd, N, mat0, matN, beta=1.5707963267948966, mode='tab', debug=False)[source]¶

Luebbers Diffration coefficient for Ray tracing

Nf : number of frequencies Nr : number of rays

fGHz : np.array (Nf) phi0 : np.array (Nr) phi : np.array (Nr) si : np.array (Nr) sd : np.array (Nr) N: np.array (Nb) mat0 : Mat matN : Mat beta : np.array (Nb)

skew incidence angle (rad)

modestr ( ‘tab’,’exact’): if ‘tab’: the Fresnel function is interpolated ( increase speed) if ‘exact’: the Fresnel function is computed for each values ( increase accuracy) (see FreF)

Dsnumpy array: Diffraction soft
Dhnumpy array: Diffraction hard

>>> import numpy as np
>>> from pylayers.antprop.slab import *
>>> Nf=3
>>> Nr=10
>>> Nb=5
>>> fGHz = np.linspace(0,10,Nf)
>>> N = np.linspace(1,10,Nb)#320/180.
>>> phi0 = np.linspace(0.01,2*np.pi-0.01,Nr)#40*np.pi/180.
>>> phi = np.linspace(0.01,2*np.pi-0.01,Nr)
>>> dm = MatDB()
>>> mat0 = dm['METAL']
>>> matN = dm['METAL']
>>> si = 10000.*np.ones(Nr)
>>> sd = 1.*np.ones(Nr)
>>> plt.ion()
>>> Ds,Dh,D1,D2,D3,D4 = diff(fGHz,phi0,phi,si,sd,N,mat0,matN)

(Source code)