Phased array partitioned into subarrays
The PartitionedArray
object represents a phased
array that is partitioned into one or more subarrays.
To obtain the response of the subarrays in a partitioned array:
Define and set up your partitioned array. See Construction.
Call step
to compute the response
of the subarrays according to the properties of phased.PartitionedArray
.
The behavior of step
is specific to each object in
the toolbox.
You can also specify a PartitionedArray
object
as the value of the SensorArray
or Sensor
property
of objects that perform beamforming, steering, and other operations.
Starting in R2016b, instead of using the step
method
to perform the operation defined by the System
object™, you can
call the object with arguments, as if it were a function. For example, y
= step(obj,x)
and y = obj(x)
perform
equivalent operations.
H = phased.PartitionedArray
creates a partitioned
array System
object, H
. This object represents
an array that is partitioned into subarrays.
H = phased.PartitionedArray(
creates
a partitioned array object, Name
,Value
)H
, with each specified
property Name set to the specified Value. You can specify additional
namevalue pair arguments in any order as (Name1
,Value1
,...,NameN
,ValueN
).

Sensor array Sensor array, specified as any array System object belonging to Phased Array System Toolbox™. Default: 

Subarray definition matrix Specify the subarray selection as an MbyN matrix. M is the number of subarrays and N is the number of elements in the array. Each row of the matrix corresponds to a subarray and each entry in the row indicates whether or not an element belongs to the subarray. When the entry is zero, the element does not belong to the subarray. A nonzero entry represents a complexvalued weight applied to the corresponding element. Each row must contain at least one nonzero entry. The phase center of each subarray is at the subarray geometric
center. The Default: 

Subarray steering method Specify the method of subarray steering as
either
Default: 

Subarray phase shifter frequency Specify the operating frequency of phase shifters that perform
subarray steering. The property value is a positive scalar in hertz.
This property applies when you set the Default: 

Number of phase shifter quantization bits The number of bits used to quantize the phase shift component of beamformer or steering vector weights. Specify the number of bits as a nonnegative integer. A value of zero indicates that no quantization is performed. Default: 
collectPlaneWave  Simulate received plane waves 
directivity  Directivity of partitioned array 
getElementPosition  Positions of array elements 
getNumElements  Number of elements in array 
getNumSubarrays  Number of subarrays in array 
getSubarrayPosition  Positions of subarrays in array 
isPolarizationCapable  Polarization capability 
pattern  Plot partitioned array directivity, field, and power patterns 
patternAzimuth  Plot partitioned array directivity or pattern versus azimuth 
patternElevation  Plot partitioned array directivity or pattern versus elevation 
plotResponse  Plot response pattern of array 
step  Output responses of subarrays 
viewArray  View array geometry 
Common to All System Objects  

release  Allow System object property value changes 
[1] Van Trees, H.L. Optimum Array Processing. New York: WileyInterscience, 2002.
phased.ConformalArray
 phased.ReplicatedSubarray
 phased.UCA
 phased.ULA
 phased.URA