How to use Fourier Transform to convert time to frequency domain for real time data ?

Question

Esakki Ponraj Esakkimuthu 2018-6-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/407016-how-to-use-fourier-transform-to-convert-time-to-frequency-domain-for-real-time-data

评论： umut senturk 2019-6-25

Hello, I have been doing my scientific project in Radar Sensor with Arduino. I am reading the receiver value in voltage with respect to time. I use Matlab Arduino tool to read the real time voltage values which is in time domain. I need to convert those values in frequency domain. How can i get the frequency domain with FFT function in Matlab ??? I have just a simple code to read voltage values from Radar. Radar Info : 24 GHz.

%%% code %%%%%%% clear a; a = arduino('COM4','Nano'); x = 0;

while(1==1) v =readVoltage(a, 'A0'); disp(v); x =[x v]; plot(x); drawnow; grid;

Kindly shed some light in this area !!!!!

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Answer 1

Tamir Suliman 2018-6-23

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https://ww2.mathworks.cn/matlabcentral/answers/407016-how-to-use-fourier-transform-to-convert-time-to-frequency-domain-for-real-time-data#answer_325988

Please search the MATLAB documentation

https://www.mathworks.com/help/matlab/math/fourier-transforms.html

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Answer 2

Elyes Hadj belgacem 2019-2-25

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Hello

i already tried this but not with radar sensor actually i used the simulink with arduino and log all the data coming from arduino (I mean here my FSR sensor) to the workspace (in array form, u can do it in the scope part) therefore i applied the FFT (or whatever you want) to the data in the workspace .

I hope this gives you some help