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Octrooi

Reconstruction system and method

A method for estimating a full signal X from a subset of the full signal B is disclosed. The method comprises the steps of: receiving a plurality of randomly sampled multichannel radio-frequency or in- phase and quadrature signals acquired from a physical environment comprising a transmitter, the transmitter comprising one or more transmitting elements for emitting ultrasound excitation pressure waves, a propagation medium containing non-uniformities capable of reflecting said pressure waves, and a receiver for receiving the full signal, wherein the receiver comprises one or more receiver elements; modelling the full signal X as a matrix comprising a plurality of vector signals, each vector signal corresponding to the full signal incident on a corresponding receiver element, wherein each vector signal comprises a plurality of samples representing the full signal sampled from a corresponding receiver element, wherein each sample comprises a weighted sum of complex sinusoids, wherein the full signal X is expressed as a matrix product of a first matrix Y and a second matrix D; updating the second matrix D based on an objective function, wherein the objective function is configured to estimate the second matrix D based on the randomly sampled signals, to produce an updated second matrix D1; determining a convergence parameter in dependence upon the evaluated objective function; and modifying the updated second matrix D1 in dependence upon the convergence parameter.
Octrooi-publicatienummer: WO2019162485
Jaar aanvraag: 2019
Jaar toekenning: 2020
Jaar van publicatie: 2019
Status: Aangevraagd
Technologiedomeinen: Meting
Gevalideerd voor IOF-sleutel: Ja
Toegewezen aan: Associatie KULeuven