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How to use beamformer in matlab 2016a using step()
You need to pass in an extra input representing the desired beamforming direction because you set the DirectionSource to 'Input ...

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How can I use Phased Array System Toolbox to implement delay and sum beamforming for wavefile?
The following demo covers some basics and can serve as a good starting point <https://www.mathworks.com/help/phased/examples/...

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Multiple target detection using FMCW Radar
There are several FMCW radar related examples in Phased Array System Toolbox. You can find them at <https://www.mathworks.com...

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Creating a scatter plot with three variables.
I would use |scatterm|, something like scatterm(X,Y,5,Z) The reference page can be found at <https://www.mathworks.co...

environ 8 ans il y a | 0

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How can I plot the first 1000 numbers in my matrix?
You can do y = x(1:167,:) where x is the original data matrix. HTH

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Why is fft2 not giving me the correct results?
First of all, it seems like your data is just a vector? In that case you can just do 1D fft, like fft(x) As to your resu...

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How do i retrieve a specific value from a 2D matrix?
You can use B(A==earliercalculatedvalue) HTH

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Why are the results of two spectral density estimation methods（periodogram and pwelch） inconsistent? If the amplitude of the power spectrum density of random signals is concerned, which spectral estimation is accurate?
Your bin widths are different. In Welch's method, you are doing in only 500 points FFT. However, the power is given by multiplyi...

environ 8 ans il y a | 1

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How to make a stairs + semilogx plot?
I don't know if this is what you want, but here is a quick example to combine stair plot with log scale in x stairs(1:10,1:...

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What exactly is operating frequency in creating a beamformer object?
You are using a subband beamformer. These beamformer assumes that the signal is modulated to a carrier frequency, i.e., the oper...

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Implement filter that cannot be normed to a(1) = 1
You will pad 4 zeros in front of numerator. HTH

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Plotting input data of DOA algorithm blocks in "Beamscan and MVDR Direction of Arrival Estimation on a ULA"
That makes sense, there is indeed two complex signals and 4 lines. However, because the two signal are conjugate to each other, ...

environ 8 ans il y a | 0

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Plotting input data of DOA algorithm blocks in "Beamscan and MVDR Direction of Arrival Estimation on a ULA"
Are you referring to the output after the Narrowband Rx Array block? If so, they are matrices of complex signal that includes de...

environ 8 ans il y a | 0

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Phased Array System Toolbox License
This forum is probably not the best place to ask license related questions. I would suggest you to first contact your school's s...

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Rotation of CustomAntennaElement data
Could you clarify what you want to achieve? The elements in Phased Array System Toolbox assumes the element normal at 0 azim...

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matrix of circulating vectors without loop
Not necessarily better in performance, but if you really want to avoid explicitly calling a loop, try y = arrayfun(@(r)gall...

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Periodogram and Spectral estimate
Omega is your frequency. From the equation, it could be the angular frequency so it would be from -pi/T to pi/T where T is your ...

environ 8 ans il y a | 0

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phased array beam stearing function
It looks like the default feed location is too close for this configuration. If you set it to pm.FeedOffset = [-pm.Length/4...

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Question about radar target classification example in Phased Array System Toolbox
The simulation used a pulse radar but I think the concept is independent to what type of radar one is using. It just looks at th...

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which type of kalman filter do i have to implement for unknown dynamic model's system?
Each Kalman filter is tied to a certain dynamic model. If you don't have knowledge of your dynamic model, one possible approach ...

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matched filtering between two signals
Here is an example to get you started. Once you get the filtered signal, the peak indicates where the echo starts. <https://w...

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How to use a matched filter to find a single in an array of data?
Here is some relevant information <https://www.mathworks.com/matlabcentral/answers/4502-matched-filter> Alternatively, you...

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how to do Polar plot?
There is an entry on File Exchange for radar plot <https://www.mathworks.com/matlabcentral/fileexchange/59561-spider--radar--...

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How to write a OS CFAR algorithmus for RADAR using MATLAB
If you want to understand the theory behind, the reference listed in the help is a good start. Richards, M. A. Fundamentals o...

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Filling in gaps incrementally
Do you always have a fully populated first column as the time vector? If so, you can try the following to do the linear interpol...

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why is Simulink Linear FM output of size [100 1]?
Could you provide more context? If you cannot share the model, it would be helpful if you can at least share a snapshot of the d...

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Speed of target in radar
I think you asked the same question yesterday, did you delete that one? Please do not delete the question and restart a new one....

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What is the difference between filter and conv?
I don't know the detail about your signal. But if the question is between |filter| and |conv|, they are only similar when you ta...

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What is the reason for choosing a rectangular pulse as an incoming signal?
There is no particular reason. Certainly the sine wave will work if the focus is just on the beamforming algorithm itself. In de...

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