Re: Calculating SNR of an incoming signal

[Marcus Müller]

Hi Alex,

can you make sure to reply to the mailing list, not just me alone? 
Others usually take interest in discussion, too :)

Well, then it's easy.

Total signal power is simply the average magnitude square of your 
received signal
You just need to subtract the power of the tone (that's its squared 
amplitude) and get the noise power.

Divide these two, and you get SNR.

However, since this is the description of a Radar that assumes its 
targets are stationary, you'd probably use a PLL to remove the noise 
bandwidth drastically, so not quite sure that kind of SNR measurement is 
extremely useful for realistic system comparison!

Best regards,
Marcus
On 24/06/2020 16.58, Alex Batts wrote:
> Hello,
>
> __ __
>
> The incoming signal is going to be a specific tone, probably around 5.8 
> GHz. I am going to be using it for radar range detection. My SDR will 
> just passively receive the reflected signal off of the object and use 
> the SNR in the range calculation.
>
> __ __
>
> Thank you,
>
> __ __
>
> Alex
>
> __ __

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