Fig. 4From: Robust adaptive filtering using recursive weighted least squares with combined scale and variable forgetting factorsExperimental results for RRWLSV algorithm in zero-mean white Gaussian noise (see Fig. 3a). a Estimated (solid line) and true parameter (dashed line) trajectories (see Fig. 2). b Scale factor estimation, s(k). c VFF calculation, ρ(k). d Discrimination function calculation, Q(k)Back to article page