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Author Topic: Measuring Beat Frequency
simon
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Posts: 1
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Post Measuring Beat Frequency
on: March 27, 2016, 14:55
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Hi,

Regarding the beat frequency of a stationary single target.
Consider the case of a sawtooth FM signal with modulation period of 1 ms. Is it necessary to measure the mixed signal (beat frequency) synced i.e. read 1 ms of the signal and then compute the FFT? What if I instead measure several modulation periods, lets say 10, and take the FFT of that. Would that clutter my spectrum, or what will be the difference?

We are currently trying to implement FMCW functionality as a Bachelor Project. But were having problems with spikes at frequencies of (integer number)/(modulation period) that clutter our spectrum. We do not use a sync pulse.

Best regards
Simon

argento
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Posts: 2
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Post Re: Measuring Beat Frequency
on: April 4, 2016, 09:02
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Can you provide an example of array you are trying to analyze?

Which detailed steps are you doing?

Any plot will help too

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