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Direction of Arrival (DOA) Estimation

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

Use direction of arrival 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.BeamscanEstimator Beamscan spatial spectrum estimator for ULA
phased.BeamspaceESPRITEstimator Beamspace ESPRIT direction of arrival (DOA) estimator for ULA
phased.ESPRITEstimator ESPRIT direction of arrival (DOA) estimator for ULA
phased.MVDREstimator MVDR (Capon) spatial spectrum estimator for ULA
phased.MUSICEstimator Estimate direction of arrival using narrowband MUSIC algorithm for ULA
phased.RootMUSICEstimator Root MUSIC direction of arrival (DOA) estimator for ULA and UCA
phased.RootWSFEstimator Root WSF direction of arrival (DOA) estimator for ULA
phased.SumDifferenceMonopulseTracker Sum and difference monopulse for ULA
phased.SumDifferenceMonopulseTracker2D Sum and difference monopulse for URA
phased.BeamscanEstimator2D 2-D beamscan spatial spectrum estimator
phased.GCCEstimator Wideband direction of arrival estimation
phased.MUSICEstimator2D Estimate 2D direction of arrival using narrowband MUSIC algorithm
phased.MVDREstimator2D 2-D MVDR (Capon) spatial spectrum estimator

Blocks

Beamspace ESPRIT DOA Beamspace ESPRIT direction of arrival (DOA) estimator for ULA
ESPRIT DOA ESPRIT direction of arrival (DOA) estimator for ULA
Root MUSIC DOA Root multiple signal classification (MUSIC) direction of arrival (DOA) estimator for ULA
Root WSF DOA Root weighted subspace fitting (WSF) direction of arrival (DOA) estimator for ULA
ULA Beamscan Spectrum Beamscan spatial spectrum estimator for ULA
ULA MUSIC Spectrum MUSIC spatial spectrum estimator for ULA
ULA MVDR Spectrum MVDR spatial spectrum estimator for ULA
ULA Sum and Difference Monopulse Sum-and-difference monopulse tracker for ULA
URA Sum and Difference Monopulse Sum-and-difference monopulse for URA
Beamscan Spectrum Beamscan spatial spectrum estimator
GCC DOA and TOA Generalized crosscorrelator with phase transform
MUSIC Spectrum MUSIC 2D spatial spectrum estimator
MVDR Spectrum Minimum variation distortionless response (MVDR) spatial spectrum estimator
Azimuth Broadside Converter Convert azimuth angle to broadside angle and vice versa

Functions

espritdoa Direction of arrival using TLS ESPRIT
gccphat Generalized cross-correlation
musicdoa Estimate arrival directions of signals using MUSIC
rootmusicdoa Direction of arrival using Root MUSIC
spsmooth Spatial smoothing
aictest Dimension of signal subspace
mdltest Dimension of signal subspace
az2broadside Convert azimuth angle to broadside angle
broadside2az Convert broadside angle to azimuth angle

Topics

DOA Examples

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.

Concepts

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.

What Are System Objects?

Defines System objects and key uses

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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