METHOD AND DEVICE FOR TIME-OF-FLIGHT ESTIMATE

A method (200A; 200B) for providing an estimate of a time-of-flight between an ultrasonic signal emitted by a device (100) and an ultrasonic echo signal returned by a target object (T) hit by the ultrasonic signal and received at the device. The method comprises:- acquiring (205) the ultrasonic echo...

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Bibliographische Detailangaben
Hauptverfasser:	SCHIANO LO MORIELLO, Rosario, LICCARDO, Annalisa, CAIAZZO, Giuseppe, RUGGIERO, Davide
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A method (200A; 200B) for providing an estimate of a time-of-flight between an ultrasonic signal emitted by a device (100) and an ultrasonic echo signal returned by a target object (T) hit by the ultrasonic signal and received at the device. The method comprises:- acquiring (205) the ultrasonic echo signal thereby obtaining an electric echo signal;- determining (210) a noise power of the electric echo signal;- determining (215) an envelope signal indicative of an envelope of the electric echo signal;- determining (220) a portion of the envelope signal based on at least one operative parameter (OPK), said at least one operative parameter being determined according to Particle Swarm Optimization;- processing (225) the portion of the envelope signal and the noise power of the echo ultrasonic signal according to an Unscented Kalman Filter to obtain an estimate of the envelope signal, wherein the estimate of the envelope signal is a regenerated version of the envelope signal being regenerated from the portion of the envelope signal, said processing being based on at least one Unscented Kalman Filter parameter (UKFPK) determined according to the Particle Swarm Optimization, and- providing (230) said estimate of the time-of-flight according to the estimate of the envelope signal.