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
name-value 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 M-by-N 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 complex-valued 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 non-negative 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: Wiley-Interscience, 2002.
phased.ConformalArray
| phased.ReplicatedSubarray
| phased.UCA
| phased.ULA
| phased.URA