Documentation

getElementPosition

System object: phased.HeterogeneousULA
Package: phased

Positions of array elements

Syntax

pos = getElementPosition(sHULA)
pos = getElementPosition(sHULA,elemidx)

Description

pos = getElementPosition(sHULA) returns the element positions of the phased.HeterogeneousULA System object™, sHULA. pos is a 3-by-N matrix, where N is the number of elements in sHULA. Each column of pos defines the position of an element in the local coordinate system, in meters, using the form [x;y;z]. The origin of the local coordinate system is the phase center of the array. The positions of the array elements depend upon the value of the ArrayAxis property.

pos = getElementPosition(sHULA,elemidx) returns only the positions of the elements that are specified in the element index vector elemidx. This syntax can use any of the input arguments in the previous syntax.

Examples

expand all

Position of Heterogeneous ULA Elements

Construct a 4-element heterogeneous ULA of different types of short-dipole antenna elements. Then, obtain the element positions.

sElement1 = phased.ShortDipoleAntennaElement(...
    'FrequencyRange',[100e6 1e9],...
    'AxisDirection','Z');
sElement2 = phased.ShortDipoleAntennaElement(...
    'FrequencyRange',[100e6 1e9],...
    'AxisDirection','Y');
sArray = phased.HeterogeneousULA(...
    'ElementSet',{sElement1,sElement2},...
    'ElementIndices',[1 2 2 1]);
pos = getElementPosition(sArray)
pos =

         0         0         0         0
   -0.7500   -0.2500    0.2500    0.7500
         0         0         0         0

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