get.transducerRadius2.TSD: Calculates the radii of circular transducer elements based on...

Description Usage Arguments

View source: R/get.transducerRadius2.TSD.R

Description

Calculates the radii of circular transducer elements based on -3 dB beam angles.

Usage

1

Arguments

beamwidth

is a vector of -3 dB beamwidths for the beams given in radians (the angle between the directions in which the acoustic intensity is half of the maximum acoustic intensity).

beampattern

is the beam pattern function having angle in radians as its first argument and the product of wave number and transducer element radius as its second argument, e. g. circularPiston(ang,kb).

wavenumber

is a vector of wave numbers for the beams.

max.radius

is an expected maximum radius which should be low enough to avoid exhaustive or inaccurate calculations.

twoway

is TRUE if the beampattern is to be squared, corresponding to a two way beam forming. I.e., if the beam widths are given as two-way angles bwtl=4 degrees, the one way beam width is actually 4*sqrt(2)=5.656854, and twoway should be TRUE to account for this.


arnejohannesholmin/echoIBM documentation built on March 19, 2018, 9:16 a.m.