Fig. 12From: Reverberation suppression using non-negative matrix factorization to detect low-Doppler target with continuous wave active sonarObjective functions with varying α and β. The values of the objective functions are calculated for a the Kullback–Leibler divergence with β=10 and varying α, b the Kullback–Leibler divergence with α=1 and varying β, c Eq. (20) with β=10 and varying α, and d Eq. (20) with α=1 and varying βBack to article page