Patent ID: 7885421

Claim:
A method comprising: receiving a noise signal (w(t), w(μ·Δt)) including at least one sinusoidal interference signal (A k ·e j(ω k t+φ k ) , A k ·e j(μ·ω k Δt+φ k ) ); splitting a frequency range of the noise signal (w(t), w(μ·Δt)) into a plurality of frequency bands (ν) via a Fast Fourier Transform (FFT) filter bank; determining, for each of the frequency bands (ν), an autocorrelation matrix ({circumflex over (R)} ν ), wherein parameters of the autocorrelation matrices ({circumflex over (R)} ν ) are variably adjusted based on whether the at least one sinusoidal interference signal (A k ·e j(ω k t+φ k ) , A k ·e j(μ·ω k Δt+φ k ) ) is to be measured, identified, and/or removed and further based on at least one averaging; and utilizing, jointly, the autocorrelation matrices ({circumflex over (R)} ν ) for one or more of measuring, identifying, or removing the at least one sinusoidal interference signal (A k ·e j(ω k t+φ k ) , A k ·e j(μ·ω k Δt+φ k ) ) in the noise signal (w(t), w(μ·Δt)).