Parametric clutter elimination

Details Parametric clutter elimination Parametric clutter elimination

1992-04-10

1993-07-13

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

367 7, 367 11, 367901, 36441325, 12826109, G03B 4206

Patent

active

052280098

ABSTRACT:
Signal processing apparatus and methods for elimination of undesirable clutter signals from desirable signals. This is performed without the use of filters by subtracting orthonormal basis functions from signal samples until the appropriate degree of clutter removal is achieved. Estimates of frequency information such as Doppler shifts due to fluid flow may thus be achieved with superior discrimination of true flow signals from sources of clutter or artifact, greater sensitivity to low flow rates, minimal computational effort and with fewer samples than the prior art.

REFERENCES:
patent: 3869601 (1975-03-01), Metcalf
patent: 5058593 (1991-10-01), Forestieri et al.

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