Risposto
Notice of amplitude modulation in FMCW example
This is due to the distortion of the propagation. In your setup, the distance between the radar and the target is approximately ...

circa 10 anni fa | 0

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How to use the fast fourier transform to calculate the output of a transfer function?
I assume your X, H, and Y are all in frequency domain? In that case, your H has to match the size of X and it should be a elemen...

circa 10 anni fa | 2

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Is it possible to create an L-shaped phased array using the Phased Array Toolbox?
Yes you can use Phased Array System Toolbox to do this, here is a small example to show that d = 0.5; N = 4; pos_alon...

circa 10 anni fa | 0

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Toolbox Phased - GCC Estimate of Direction of Arrival at Microphone Array - MATLAB Example
You may want to check the spacing of the array and the sampling rate. The GCC algorithm essentially does a correlation between c...

circa 10 anni fa | 0

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How can I use "beamscan" for a wideband signal (Phased Array System Toolbox)
The main idea behind beamscan is to form a beam toward all directions and then select the strongest return. For wideband signals...

oltre 10 anni fa | 0

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How do I generate a pulse train of sine waveforms?
You can take a look at the pulstran function in Signal Processing Toolbox. Here is an example prf = 1; pw = 0.1; fs ...

oltre 10 anni fa | 2

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How frequency response can be calculated from set of filter coefficients ????
Say if you have coefficients in a vector |a|, e.g., c = [1 1 1] Just do freqz(c) HTH

oltre 10 anni fa | 0

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How do I pass variables between functions
It seems you didn't explicitly return and pass in the properties you computed? Could you try properties = readProperties(...

oltre 10 anni fa | 0

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calculating auto-correlation function of a matrix
Do you mean you want to compute autocorrelation for each column? If so, you can always use a |for| loop to do that, e.g., ...

oltre 10 anni fa | 0

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How to use set() to put multiple y-data points on plot
Do you know the size of data? If so, you can do something like x = [rand(100,6) (1:100)']; % 100x7 matrix plotdata = pl...

oltre 10 anni fa | 1

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Phased.LinearFMWaveform Function + For Loop
Your code runs just fine, could you elaborate what your question is? My guess is you want to see the signal itself? If so, you c...

oltre 10 anni fa | 0

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SLL problems in a large phased array antenna
Hi Sricharan, Could you share a bit more info how you determine the SLL, is it by looking the beam pattern plotted in the fig...

oltre 10 anni fa | 0

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How to set propagation speed?
300000 km/s is the speed of light, I guess this is just a physical limitation of the propagation speed as nothing moves faster t...

oltre 10 anni fa | 0

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How does the phased array toolbox realize the off-grid time delay with phased.FreeSpace system object?
Hi Cole, You are right that the grid is defined by the sampling rate of the signal. If the time delay is not corresponding to...

oltre 10 anni fa | 0

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Risposto
Wideband Radar System Design
You can always contact Rick directly via Phased Array System Toolbox product page at http://www.mathworks.com/products/phased...

oltre 10 anni fa | 1

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How to export 3D data from Matlab as a stl or obj file
I have never done this so I cannot guarantee the workflow. However, the figure generated by the above code is a surf plot and th...

oltre 10 anni fa | 1

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how to simulate a pulsed radar system with Matlab ?
Could you be more specific with your question. I think the example "Desigining a Basic Monostatic Pulse Radar" already contains ...

oltre 10 anni fa | 0

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Relation between steering vector and radiation pattern
You can think of steering vector as the field received at each element in the array. Hence, the field radiation pattern for a gi...

oltre 10 anni fa | 0

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How to convert the values in the spatial spectrum returned from the MVDREstimator2D to dB ?
You should be able to use |mag2dB| for this. For example, let's say |y| is your spatial spectrum, then you can do the following ...

oltre 10 anni fa | 0

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Risposto
how to write a m file code to cfar for fmcw radar
You may also want to take a look at CFAR detector offered in Phased Array System Toolbox. The noise is estimated using training ...

oltre 10 anni fa | 0

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How can I use the Welch's method to obtain the Power Spectrum?
You can use |pwelch| if you have Signal Processing Toolbox http://www.mathworks.com/help/signal/ref/pwelch.html

oltre 10 anni fa | 0

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Modeling an ultrasonic transducer in Phased Array toolbox
It would be hard to answer that question without some context. There is no native support for ultrasound sensor yet but some ana...

oltre 10 anni fa | 0

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Detecting two targets in Radar sound signal processing
Take a look at Phased Array System Toolbox, http://www.mathworks.com/products/phased-array/ and its examples http://ww...

oltre 10 anni fa | 0

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sampling rate requirements in radar end-to-end simulations
For a bandpass signal, in theory the sampling rate only needs to be the same as the bandwidth. Unfortunately right now the wa...

oltre 10 anni fa | 0

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How can I reshape the data to plot vorticity?
From your data, you may want to do y_new = reshape(x,numel(xu),numel(yu)); x_new = reshape(y,numel(xu),numel(yu)); p...

oltre 10 anni fa | 0

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Risposto
modelling custom time-varying radar cross-section (RCS)
This sounds like an interesting problem, is it possible for you to share what kind of application requires this? I'll be interes...

oltre 10 anni fa | 0

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simulating radar targets vibrating at a low frequency
There is no existing solution for this in Phased Array System Toolbox, but if the purpose is to model a sphere, it can be done m...

oltre 10 anni fa | 0

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target/environment modelling using phased array toolbox
Yes, it's doable. The following example shows three targets in the same direction yet the return from all three are modeled. ...

oltre 10 anni fa | 0

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Risposto
Problem with matrix as input for pwelch()
Hi Jan, can you run which pwelch and see if you are indeed running the correct |pwelch|? Also it will be helpful if you...

oltre 10 anni fa | 0

Risposto
Signal_Blocks Licensing error: -5,357
|fdesign.notch| is a feature from DSP System Toolbox. You may want to check if you have the license for that product. HTH.

oltre 10 anni fa | 1

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