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Direction of Arrival Estimation

Beamscan, MUSIC, MVDR, monopulse trackers, beamspace, ESPRIT, subspace methods

Use direction of arrival (DOA) estimation to localize the direction of a radiating or reflecting source. DOA algorithms include beamscan, minimum-variance distortionless response, MUSIC, 2-D MUSIC, and root-MUSIC. Monopulse trackers provide algorithms for tracking moving objects.

System Objects

phased.BeamscanEstimatorBeamscan spatial spectrum estimator for ULA
phased.BeamspaceESPRITEstimatorBeamspace ESPRIT direction of arrival (DOA) estimator for ULA
phased.ESPRITEstimatorESPRIT direction of arrival (DOA) estimator for ULA
phased.MVDREstimatorMVDR (Capon) spatial spectrum estimator for ULA
phased.MUSICEstimatorEstimate direction of arrival using narrowband MUSIC algorithm for ULA
phased.RootMUSICEstimatorRoot MUSIC direction of arrival (DOA) estimator for ULA and UCA
phased.RootWSFEstimatorRoot WSF direction of arrival (DOA) estimator for ULA
phased.SumDifferenceMonopulseTrackerSum and difference monopulse for ULA
phased.SumDifferenceMonopulseTracker2DSum and difference monopulse for URA
phased.BeamscanEstimator2D2-D beamscan spatial spectrum estimator
phased.GCCEstimatorWideband direction of arrival estimation
phased.MUSICEstimator2DEstimate 2D direction of arrival using narrowband MUSIC algorithm
phased.MVDREstimator2D2-D MVDR (Capon) spatial spectrum estimator

Blocks

Beamspace ESPRIT DOABeamspace ESPRIT direction of arrival (DOA) estimator for ULA
ESPRIT DOAESPRIT direction of arrival (DOA) estimator for ULA
Root MUSIC DOARoot multiple signal classification (MUSIC) direction of arrival (DOA) estimator for ULA
Root WSF DOARoot weighted subspace fitting (WSF) direction of arrival (DOA) estimator for ULA
ULA Beamscan SpectrumBeamscan spatial spectrum estimator for ULA
ULA MUSIC SpectrumMUSIC spatial spectrum estimator for ULA
ULA MVDR SpectrumMVDR spatial spectrum estimator for ULA
ULA Sum and Difference MonopulseSum-and-difference monopulse tracker for ULA
URA Sum and Difference MonopulseSum-and-difference monopulse for URA
Beamscan SpectrumBeamscan spatial spectrum estimator
GCC DOA and TOAGeneralized crosscorrelator with phase transform
MUSIC SpectrumMUSIC 2D spatial spectrum estimator
MVDR SpectrumMinimum variation distortionless response (MVDR) spatial spectrum estimator
Azimuth Broadside ConverterConvert azimuth angle to broadside angle or broadside angle to azimuth angle

Functions

espritdoa Direction of arrival using TLS ESPRIT
gccphatGeneralized cross-correlation
musicdoaEstimate arrival directions of signals using MUSIC
rootmusicdoaDirection of arrival using Root MUSIC
spsmoothSpatial smoothing
aictestDimension of signal subspace
mdltestDimension of signal subspace
az2broadsideConvert azimuth and elevation angle to broadside angle
broadside2azConvert broadside angle to azimuth angle

Topics

DOA

Beamscan Direction-of-Arrival Estimation

Use beamscan to estimate directions of arrival of signals.

Super-Resolution DOA Estimation

Compare conventional beamscan to root-MUSIC to estimate directions of arrival.

Target Tracking Using Sum-Difference Monopulse Radar

Use the sum-difference monopulse tracker to continually estimate signal direction of arrival.

DOA Techniques

MUSIC Super-Resolution DOA Estimation

Learn the fundamentals of the MUSIC direction-finding algorithm and spatial smoothing.

Units of Measure and Physical Constants

Phased Array System Toolbox™ uses the International System of Units.

Standards and Conventions

This section introduces the concept of baseband signals and defines the local and global coordinate systems used in the toolbox.

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