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Rem function yields wrong output.
This is due to the round off error from floating point computation. The following link might be helpful <https://www.mathwork...

8 years ago | 2

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Is there a way to extract numerical information on the antenna directivity as opposed to just visualizing it using the pattern command?
Yes, if you want the entire pattern, you can just specify an output, like [D,az,el] = pattern(array,fc,az,el,'Type','direct...

8 years ago | 0

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Answered
How can we represent phased.waveform mathematically for sweep direction being up ?
The equation can be considered as x = exp(1i*2*pi*beta/2*t^2) where |beta| is |SweepBandwidth/PulseWidth|. HTH

8 years ago | 0

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Filter design toolbox dont have quantization pane
Could you share the result of "ver" command? I think you need to have DSP System Toolbox to access that functionality. HTH

8 years ago | 0

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What is the difference between designfilt and fdesign
Could you share which release you are using? You can find the info by runnig |ver| at the command prompt. HTH

8 years ago | 0

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Beamforming using Frost beamformer
Below is a popular paper about Frost beamformer. It is also the reference used for Frost beamformer shipped in Phased Array Syst...

8 years ago | 0

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How to use GUI to have some input values
How are you writing the GUI? In summary you need to write a callback function for the button so it knows what to do when you pre...

8 years ago | 0

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how to find lomb periodogram in matlab
Have you tried |plomb|? <https://www.mathworks.com/help/signal/ref/plomb.html> HTH

8 years ago | 0

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Answered
how to get fft of a signal?
The first figure is your signal, which has a DC component. You may want to remove that before running the FFT, like c = fft...

8 years ago | 1

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How can I get the phase of the radiation pattern of a phased array?
Since you want a complex pattern, it will be a field pattern instead of power pattern. I would use ArrayResponse. Here is an exa...

8 years ago | 0

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Direction of arrival estimation of a chirp (noised and attenuated) using Capon (MVDR) beamformer
If you have access to Phased Array System Toolbox, maybe you want to take a look at the following example. It may help you under...

8 years ago | 0

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Undefined function 'pattern' for input arguments of type 'phased.ULA'.
In your release, you will have to use |plotResponse| instead. You should be able to find reference page for this function in the...

8 years ago | 0

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Undefined function or variable 'Tw'
Looks like the issue is more on the |fprintf| line, not the function call. Indeed you are using variable name |Tw| in |fprintf| ...

8 years ago | 0

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Split column data into two columns
Could you elaborate what you have as a matrix? If you are using character arrays, it should just be a 5-column matrix to star...

8 years ago | 0

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我装完高阶谱的工具箱后每次启动matlab就弹出一个警告，说是INFO.XML不合法，请问这个怎么解决？
高阶谱工具箱是第三方工具箱，根据下面链接中的信息，最后更新是在2003年，所以它的info.xml可能不符合最新的格式。 <https://www.mathworks.com/matlabcentral/fileexchange/3013-hosa-...

8 years ago | 1

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Answered
Convert Matrix to Vector in Simulink
You should be able to use Selector to do it. In your dialog, set Number of input dimensions to 2 set Index mode to one base...

8 years ago | 0

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MIMO Multipath for specific array geometry
comm.MIMOChannel does not specify the array geometry directly. Rather it uses correlation matrix to include the array effect. To...

8 years ago | 0

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Questions in FMCWExample about plotresponse and Nsweep
When you use a sweep time of 2 ms, as mentioned in the published example <https://www.mathworks.com/help/phased/examples/auto...

8 years ago | 0

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Answered
How to plot loudspeaker frequency response from its impulse response?
Frequency response is the Fourier transform of the impulse response so you should be able to use |freqz| to compute it if you ar...

8 years ago | 1

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target angle set up in a radar simulation without phase shifter
You should use |tgtang|. Note that what you do here is to synthesize the data. Therefore, even though the radar is not steering,...

8 years ago | 0

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3D Rotation Matrix
I'm not sure if I fully follow your question, but here is my understanding. The first step is to find the coordinates of all po...

8 years ago | 1

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FMCW FFT processing (range time plot)
I'm just speculating but if your processing result matches the ground truth, it will be hard to argue against it. For a FMCW,...

8 years ago | 0

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fprintf size without knowing the dimension
You can just do fprintf(' %s\n',num2str(size(array))); HTH

8 years ago | 0

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How to plot polar directivity pattern through beamform audio.wav ?
The pattern is associated with the array itself. Once the beamform is obtained, the wav file is just a time domain representatio...

8 years ago | 0

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Sum up rows of several columns with the same element in the first column
You can also use |accumarray| if you have an earlier version hm = str2double(h); [u,~,idx] = unique(hm(:,1),'stable'...

8 years ago | 0

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How to assign a structure name using an index?
Here is a simple example how you can achieve that Abb = {'file1','file2'}; temp = struct('a',3,'b',4); index = 1; ...

8 years ago | 0

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How to extract the amplitude from Hilbert Transformation?
The magnitude of an analytical signal (which is what hilbert gives you) is the envelope of the signal. Is that what you want? I'...

8 years ago | 0

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question about the signal smoothing example
For the first question, the data is recorded hourly, so the samples are done in 1:31*24. However, in the display, the x axis is ...

8 years ago | 0

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What's the correct syntax for the rocsnr function for a multiple pulse noncoherent detector?
You could do something like this SNRdB = [-3 0 3]; rocsnr(SNRdB,'SignalType','NonfluctuatingNoncoherent','NumPulses',10)...

8 years ago | 0

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Answered
Range and DOA for spherical wave
Phased Array System Toolbox does not have that particular algorithm. However there is an example on localization that uses corre...

8 years ago | 0