DACWIN (Divide and Conquer With Noise) method

H₀(s) is calculated applying standard frequency domain identification techniques for linear systems based on quotient of polynomials. DACWIN divides the frequency band into smaller sub-bands that uses smaller orders to fit the frequency response H₀(jω_s). This method is better suited for the identification of wide-band transfer functions with high number of resonances thanks to its methodology based on the partition of the frequency band in smaller sub-bands.

$H_0\left(s\right)=\frac{{\prod }_{i=1}^{N_Z}\left(s-z_i\right)}{{\prod }_{i=1}^{N_p}\left(s-p_i\right)}$ $$ with z_i:i=1... N_z zeros and p_i:i=1...N_p poles