MATLAB: Simple Equation, writing formula

equation

I Truly appreciate if somebody check my code. I should measure a parameter of a long vector and I have wrtten the code but my prof. says it is something wrong. I am new in MATLAB:( .Thank you.

The equation is:

RC = ½(deltaVp/averageVp + deltaRHO/averageRHO). % reflection coefficients

My code is:

for j=2:l;

r2(j)=1/2.*((v(j)-v(j-1))/(v(j)+v(j-1))+(d(j)-d(j-1))/(d(j)+d(j-1))); % reflection coefficients

end

Best Answer

Average is sum divided by two. You do not divide by two.

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MATLAB: How to calculate passband and stopband coefficients for signal filtering

If you are concerned with an anti-aliasing filter for the time-domain signal, you need to go back and design a hardware Bessel (besself) lowpass anti-aliasing filter with a cutoff frequency that is equal to the Nyquist frequency (half the sampling frequency), then do the sampling. Frequencies higher than the Nyquist frequency are already aliased in your signal and now cannot be removed.

The frequency of ‘6562 per kilometer’ is obviously a spatial frequency, and I assume normal signal processing approaches would apply, so use the lowpass function, or design your own elliptic filter (ellip and related functions), each with a cutoff frequency of 3218 samples/km, as the anti-aliasing filter. Use filtfilt to do the actual filtering.

Then do whatever signal processing you want on the remaining signal. Use a highpass or bandpass filter to eliminate baseline offset and baseline drift. Using elliptic filters to do these are also straightforward to design in MATLAB.

MATLAB: How to divide and times in matlab

*  % matrix multiply
.* %scalar multiply
/  % matrix divide
./ % scalar divide
^  % exponentiation
.^ % element-by-element exponentiation

so for your equation:

1./sqrt((R.^2+(w.*L-1/(w.*c)).^2));

Best Answer

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MATLAB: How to divide and times in matlab

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