brewster EMTTOOL c2p

EMTTOOL >> EMTTOOL > bwidth

bwidth

beamwidth mapping from psi-space to phi-space

Calling Sequence

dphi = bwidth(d, ph0, dpsi))

Parameters

d

array spacing in units of lambda

ph0

beam steering angle in degrees

dpsi

beamwidth in psi-space (in radians)

dphi

beamwidth in degrees

Description

bwidth(d, ph0, dpsi) performs beamwidth mapping from psi-space to phi-space. This function uses the transformation dpsi=2*pi*d*sin(ph0)*dphi, which follows from differentiating psi=2*pi*d*(cos(phi) - cos(phi0)), usually, dpsi input is calculated from dpsi=b*0.886*2*pi/N where b is the broadening factor depending on the window design method

Examples

add sample pgm

See Also

Author

brewster EMTTOOL c2p