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Can I implement a LFM method for autocorrelation process using an Arduino? For example if I have a signal input LFM as a real signal and other signal as an imaginer signal.

My question is can I correlate the real signal and imaginer signal using an Arduino?

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closed as unclear what you're asking by Gerben, fuenfundachtzig, Nick Gammon, LoganBlades, TheDoctor Aug 13 at 15:29

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
    
Where does LFM stand for? –  Gerben Jul 22 at 15:35
    
LFM is in arduino to generate the real signal –  Guntur Rangga Jul 22 at 16:15
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Little Flying Men? / Lick Fluted Molasses? / Low Frequency Module? / Linda Ford Millinerey? / Zenith Projection TV ???????????????? –  Russell McMahon Jul 22 at 19:14
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Linear Frequency Modulation –  Igor Stoppa Jul 22 at 19:21
    
The OP has asked the same question on the Arduino forums but with little joy. It seems like an interesting project but the Arduino could be a little underpowered for such a task. –  Greenonline Aug 11 at 21:45

1 Answer 1

up vote 1 down vote

Since you are talking about Arduino, I suppose you want to do it digitally.

The answer is: it depends.

It depends on:

  • Desired frequency of the carrier
  • Desired maximum frequency of the input signal
  • Desired accuracy (compared to the equivalent done with analog components)

But in general I'd say that it's unlikely it will have sufficient computational power. I'm assuming the question is for the 16MHz 8 bit UNO. The Cortex M3 on the DUE might stand some chance, being a 32bit core @ 84MHz.

It might be possible to do some trick using a PWM signal and a digital output with a wired AND, but I'll leave to others to comment about its feasibility.

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if I need to make the signal transfer function LFM or arduino can manufacture its own signals as in MATLAB –  Guntur Rangga Jul 24 at 9:47
    
My point is that the 8-bit AVR might not be sufficiently powerful and/or accurate to implement the transfer function. MATLAB runs on much more powerful processors that, for example, are capable of doing floating point calculations. –  Igor Stoppa Jul 24 at 18:53

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