I am a developer on Phased Array System Toolbox at MathWorks

DISCLAIMER: Any advice or opinions posted here are my own, and in no way reflect that of MathWorks.

Professional Interests: Signal Processing, Array Processing, Radar, and Communication

Answered

Multistatic radar simulation in Phased Array Toolbox

Yes Phased Array System Toolbox can model such scene. You can see a bistatic polarimetric radar example at https://www.mathwork...

Multistatic radar simulation in Phased Array Toolbox

Yes Phased Array System Toolbox can model such scene. You can see a bistatic polarimetric radar example at https://www.mathwork...

5 days ago | 0

| accepted

Answered

Simulation of Clutter Affected by Transmitting Weight

Thanks for the post, this is indeed a gap in the toolbox. We'll try to provide this capability in the future. What release are y...

Simulation of Clutter Affected by Transmitting Weight

Thanks for the post, this is indeed a gap in the toolbox. We'll try to provide this capability in the future. What release are y...

5 days ago | 0

Answered

Inverse Direction of Arrival Estimation

If you are sure that Range-Azimuth is obtained via a 1-D FFT, then you can just do an inverse FFT, as long as you have the origi...

Inverse Direction of Arrival Estimation

If you are sure that Range-Azimuth is obtained via a 1-D FFT, then you can just do an inverse FFT, as long as you have the origi...

6 days ago | 1

Answered

Phased Array Systems Toolbox

X is probably not a matrix. If you can provide more info regarding the data matrix, that will help us understand the problem bet...

Phased Array Systems Toolbox

X is probably not a matrix. If you can provide more info regarding the data matrix, that will help us understand the problem bet...

7 days ago | 0

Answered

Max value of each vector in a 3D hyperspectral data matrix

Let's say xc is your datacube, does [z_max,z_ind] = max(xc,[],3) satisfy your needs? HTH

Max value of each vector in a 3D hyperspectral data matrix

Let's say xc is your datacube, does [z_max,z_ind] = max(xc,[],3) satisfy your needs? HTH

7 days ago | 0

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Answered

Using System Objects in complex programs (DSP)

Yes you can do it, there are many shipping System objects that do this. This is essentially done the same as a regular class. H...

Using System Objects in complex programs (DSP)

Yes you can do it, there are many shipping System objects that do this. This is essentially done the same as a regular class. H...

8 days ago | 0

Answered

Difference between no steering and steervec in 0, 0 ?

Could you share how you invoke the two interfaces? From what you described? The two interfaces is a bit different in array defin...

Difference between no steering and steervec in 0, 0 ?

Could you share how you invoke the two interfaces? From what you described? The two interfaces is a bit different in array defin...

23 days ago | 0

Answered

Hi. I have to create an FMCW signal, transmit, receive and mix them to get the IF signal, and inturn get the radar 2D matrix for post processing. But I my 2nd FFT doesnt give the correct value of velocity.

The following example might be helpful to you https://www.mathworks.com/help/phased/examples/automotive-adaptive-cruise-contro...

Hi. I have to create an FMCW signal, transmit, receive and mix them to get the IF signal, and inturn get the radar 2D matrix for post processing. But I my 2nd FFT doesnt give the correct value of velocity.

The following example might be helpful to you https://www.mathworks.com/help/phased/examples/automotive-adaptive-cruise-contro...

28 days ago | 0

Answered

Is there any code for spatial spectrum in ESPRIT algorithm?

ESPRIT does not estimate the direction of arrival from spatial spectrum, thus the function currently does not generate the spati...

Is there any code for spatial spectrum in ESPRIT algorithm?

ESPRIT does not estimate the direction of arrival from spatial spectrum, thus the function currently does not generate the spati...

28 days ago | 0

Answered

Is there an alternative for kalman filter

For a linear system, a linear Kalman filter is probably enough. There is also a simpler form of Kalman filter called alpha-beta ...

Is there an alternative for kalman filter

For a linear system, a linear Kalman filter is probably enough. There is also a simpler form of Kalman filter called alpha-beta ...

1 month ago | 0

Answered

Are there any matlab functions to calculate E,H-plane beamwidths for a rectangular phased array?

You can use polarpattern to plot the pattern in the two planes and measure the beamwidth. HTH

Are there any matlab functions to calculate E,H-plane beamwidths for a rectangular phased array?

You can use polarpattern to plot the pattern in the two planes and measure the beamwidth. HTH

1 month ago | 0

Answered

Beamsteering With Custom Elements Without Phased Array Toolbox

What you described to me looks like what you will be able to achieve with SteeringVector, or more precisely ArrayResponse. You m...

Beamsteering With Custom Elements Without Phased Array Toolbox

What you described to me looks like what you will be able to achieve with SteeringVector, or more precisely ArrayResponse. You m...

1 month ago | 0

Answered

Getting the complex antenna response in the antenna library?

Is this what you mean? https://www.mathworks.com/help/antenna/ref/ehfields.html Or alternatively, if you want it to be in far ...

Getting the complex antenna response in the antenna library?

Is this what you mean? https://www.mathworks.com/help/antenna/ref/ehfields.html Or alternatively, if you want it to be in far ...

1 month ago | 0

Answered

How to update patternCustom plots

Since magE is CData, you can just do h = patternCustom(magE,theta,phi); h.CData = newMagE; HTH

How to update patternCustom plots

Since magE is CData, you can just do h = patternCustom(magE,theta,phi); h.CData = newMagE; HTH

2 months ago | 0

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Answered

Periodogram of sinusoid: why power is -6 dB instead of -3 dB?

The periodogram shows the power density. The magnitude at those frequency for a sinusoid is 1/2, so the power is 1/4, which corr...

Periodogram of sinusoid: why power is -6 dB instead of -3 dB?

The periodogram shows the power density. The magnitude at those frequency for a sinusoid is 1/2, so the power is 1/4, which corr...

2 months ago | 0

Answered

How can I know the period of a FMCW?

You may be able to use phased.LinearFMWaveform to achieve this. FMCW waveform is set to be without the idle time. HTH

How can I know the period of a FMCW?

You may be able to use phased.LinearFMWaveform to achieve this. FMCW waveform is set to be without the idle time. HTH

2 months ago | 0

Answered

How can I load Phased Array System Toolbox to my trial Matlab?

There is a trial software link on the product home page. https://www.mathworks.com/products/phased-array.html HTH

How can I load Phased Array System Toolbox to my trial Matlab?

There is a trial software link on the product home page. https://www.mathworks.com/products/phased-array.html HTH

2 months ago | 0

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Answered

Angle of Arrival for UCA

You may want to take a look at root MUSIC algorithm provided in Phased Array System Toolbox https://www.mathworks.com/help/phas...

Angle of Arrival for UCA

You may want to take a look at root MUSIC algorithm provided in Phased Array System Toolbox https://www.mathworks.com/help/phas...

2 months ago | 0

Answered

Adaptive beamforming using LMS

Hi Mirza, Thanks for requesting these features, we'll look into it.

Adaptive beamforming using LMS

Hi Mirza, Thanks for requesting these features, we'll look into it.

2 months ago | 0

| accepted

Answered

scale factor for constantGammaClutter model in phase array toolbox

The magnitude is determined by many factos, like the power and the value of gamma parameter. In addition, if your altitude is hi...

scale factor for constantGammaClutter model in phase array toolbox

The magnitude is determined by many factos, like the power and the value of gamma parameter. In addition, if your altitude is hi...

2 months ago | 0

Answered

Relationship between noise power in a Band-Limited White Noise block VS Variance in a Random Number block

You may want to look at the Algorithm section of the following doc page https://www.mathworks.com/help/simulink/slref/bandlimit...

Relationship between noise power in a Band-Limited White Noise block VS Variance in a Random Number block

You may want to look at the Algorithm section of the following doc page https://www.mathworks.com/help/simulink/slref/bandlimit...

2 months ago | 1

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Answered

Beamforming with FFT not showing Grating Lobes

This is because when you use FFT, by definition FFT covers only between 0 to 2pi. But when you have an element spacing of severa...

Beamforming with FFT not showing Grating Lobes

This is because when you use FFT, by definition FFT covers only between 0 to 2pi. But when you have an element spacing of severa...

2 months ago | 0

Answered

Problem in the initFcn callback of model

When you say that you rewrote the init function, did you overwrite it? If so, it should use the same one. You can certainly rena...

Problem in the initFcn callback of model

When you say that you rewrote the init function, did you overwrite it? If so, it should use the same one. You can certainly rena...

2 months ago | 0

Answered

IMU sensor fusion viewer "HelperOrientationViewer"

You may have to open the example in MATLAB and click the "Open Example" button. That will copy all necessary helper functions in...

IMU sensor fusion viewer "HelperOrientationViewer"

You may have to open the example in MATLAB and click the "Open Example" button. That will copy all necessary helper functions in...

2 months ago | 1

| accepted

Answered

Variable measurement length for trackingEKF

Could you elaborate what kind of system you are trying to model? In general the dimension of the measurement doens't change over...

Variable measurement length for trackingEKF

Could you elaborate what kind of system you are trying to model? In general the dimension of the measurement doens't change over...

3 months ago | 0

Answered

delay and sum beamforming

Have you tried phased.PhaseShiftBeamformer? That would perform delay and sum beamforming for you. HTH

delay and sum beamforming

Have you tried phased.PhaseShiftBeamformer? That would perform delay and sum beamforming for you. HTH

3 months ago | 0

Answered

Radar simulation: How to apply a precise delay?

The FreeSpace in Phased Array System Toolbox uses fractional delay fitler to approximate the delay between samples. HTH

Radar simulation: How to apply a precise delay?

The FreeSpace in Phased Array System Toolbox uses fractional delay fitler to approximate the delay between samples. HTH

3 months ago | 1

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Answered

phased.URA 8 by 1 array

This is a linear array, you can consider using phased.ULA to model it. phased.URA requires multiple elements in both dimensions....

phased.URA 8 by 1 array

This is a linear array, you can consider using phased.ULA to model it. phased.URA requires multiple elements in both dimensions....

3 months ago | 0

| accepted

Answered

what does this error error mean? "Array formation and parentheses-style indexing with objects of class 'phased.PhaseShiftBeamformer' is not allowed. Use objects of class 'phased.PhaseShiftBeamformer' only as scalars or use a cell array."

Let's say you have two objects bf1 = phased.PhaseShiftBeamformer; bf2 = phased.PhaseShiftBeamformer; The message indicates th...

what does this error error mean? "Array formation and parentheses-style indexing with objects of class 'phased.PhaseShiftBeamformer' is not allowed. Use objects of class 'phased.PhaseShiftBeamformer' only as scalars or use a cell array."

Let's say you have two objects bf1 = phased.PhaseShiftBeamformer; bf2 = phased.PhaseShiftBeamformer; The message indicates th...

4 months ago | 0

Answered

PHASED ARRAY TOOLBOX/ SINUSOIDAL VIBRATING TARGET MODELLING

Nothing off the shelf at this point. This being said, the interface of features in Phased Array System Toolbox are numeric vecto...

PHASED ARRAY TOOLBOX/ SINUSOIDAL VIBRATING TARGET MODELLING

Nothing off the shelf at this point. This being said, the interface of features in Phased Array System Toolbox are numeric vecto...

4 months ago | 0