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Author Topic: Doppler Experiment demo
charvatg
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Posts: 115
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Post Doppler Experiment demo
on: November 3, 2012, 17:08
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enginefrea-
k
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Posts: 14
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Post Re: Doppler Experiment demo
on: January 28, 2013, 00:37
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Hello there Mr Charvat!

As posted, we have problems on signal processing. There's a lot to be figured out on this project, but as of now we wish to find out how the raw data could be manipulated into finding the values of velocity, distance and direction (if possible) of an object. From your MATLAB demo, we have learned how to see the Doppler data into an image. From there we are having trouble figuring out how to gather the accurate velocity of the object received. Is there any sort of formula, or rather what could we manipulate to accomplish this?

Here's an example of what we're trying to achieve:

charvatg
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Posts: 115
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Post Re: Doppler Experiment demo
on: January 28, 2013, 07:52
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Good question! Yes there is, the frequency of this radar is fo = 2.4 GHz = 2.4 x 10^9 Hz. You can use the first equation on this wikipedia page on Doppler, then solve for velocity vr:

http://en.wikipedia.org/wiki/Doppler_effect

enginefrea-
k
Newbie
Posts: 14
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Post Re: Doppler Experiment demo
on: February 11, 2013, 08:08
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f = [(c+vr)/(c+vs)]*fo

fo = 2.4GHz
c = 3x10^8m/s
vs = we already know how to find this

How about the f? The results we're getting is a matrix, so we're assuming we only need to get the highest frequency out of all of them? Or is there another way of getting the frequency we need? Thanks for your response.

charvatg
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Posts: 115
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Post Re: Doppler Experiment demo
on: February 11, 2013, 08:17
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You want the strongest frequency, you will see many frequencies. Try it and playback the doppler with a pair of amplified computer speakers. If you try and listen to it it will make sense.

yaya
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Posts: 1
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Post Re: Doppler Experiment demo
on: November 29, 2017, 22:57
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hello there.. I am now doing this tin can radar. may I know on how to do this experiment in details?

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