phased.BeamspaceESPRITEstimator
Beamspace ESPRIT direction-of-arrival (DOA) estimator for ULA
Description
The BeamspaceESPRITEstimator
object estimates the
broadside direction of arrival (DOA) of a signal on a uniform linear array (ULA). The
computation uses the Estimation of Signal Parameters via Rotational Invariance Techniques
(ESPRIT) algorithm in beamspace.
To estimate the direction of arrival (DOA) of a signal using beamspace ESPRIT:
Create the
phased.BeamspaceESPRITEstimator
object and set its properties.Call the object with arguments, as if it were a function.
To learn more about how System objects work, see What Are System Objects?
Creation
Syntax
Description
creates a beamspace ESPRIT DOA estimator System object™, estimator
= phased.BeamspaceESPRITEstimatorestimator
. The object estimates the signal's direction
of arrival at a uniform linear array (ULA) using the beamspace ESPRIT algorithm.
estimstor = phased.BeamspaceESPRITEstimator(
creates the Name
=Value
)estimator
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
).
Properties
Usage
Syntax
Description
estimates the DOAs amgles ang
= estimator(X
)ang
from beamspace data
X
.
Note
The object performs an initialization the first time the object is executed. This
initialization locks nontunable properties
and input specifications, such as dimensions, complexity, and data type of the input data.
If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first
call the release
method to unlock the object.
Input Arguments
Output Arguments
Object Functions
To use an object function, specify the
System object as the first input argument. For
example, to release system resources of a System object named obj
, use
this syntax:
release(obj)
Examples
Algorithms
References
[1] Van Trees, H. Optimum Array Processing. New York: Wiley-Interscience, 2002.
Extended Capabilities
Version History
Introduced in R2011a