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david1412 / Time-varying--MIMO

Time varying system identification of MIMO Acoustics systems
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System distances for different angular speeds Ω ( SNR) #6

Closed david1412 closed 6 years ago

david1412 commented 6 years ago

If i want to calculate the average speed distance at Ω ..

can i use the formula Ω=360/7/8/9

7,8,9 are ?

actual formula for Ω= c/ro*N

narahahn commented 6 years ago

I guess you mean the average "System" distance, right?

So far, you have one value (System distance) for each target angle. The average system distance is the system distance averaged over all angles.

Please notice that you are saving 20*np.log10(system_distance) to D, but that is actually the system distance represented in dB scale. If you want to average the system distance, the value of system_distance has to be averaged, not 20*np.log10(system_distance).

The Formular you mentioned looks similar to the anti-aliasing condition for the angular speed, but it's not correct. It is

Omega = c / r0 / N

But I still don't understand what it has to do with the average system distance. What's 7, 8, 9?

david1412 commented 6 years ago

in your paper i saw Ω= 360/7 , 360/8

narahahn commented 6 years ago

Those are the angular speeds (in degree).

I think I still don't understand your question. What are you going to do with Omega?

david1412 commented 6 years ago

doubt is cleared .. I am not doing anything with Omega .. But in the average distance implementation i need omega value to draw the dotted line.