公开(公告)号：US20240201351A1

公开(公告)日：2024-06-20

申请号：US18532939

申请日：2023-12-07

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Davide RUGGIERO ,  Rosario SCHIANO LO MORIELLO

IPC: G01S7/52

CPC classification number: G01S7/52025

Abstract: Method to provide a TOF estimate by a TOF device. The method comprises: generating an electric echo signal indicative of an ultrasonic echo signal returned by a target body by the ultrasonic source signal; determining an envelope signal indicative of an envelope of the electric echo signal; generating a first TOF estimate by processing the electric echo signal; determining an envelope signal portion of the envelope signal based on a non-PSOA hyperparameter; and generating a second TOF estimate by processing the envelope signal portion through PSOA, the second TOF estimate having a measurement accuracy value greater than that of the first TOF estimate. PSOA is optimized based on a PSOA hyperparameter set. The non-PSOA hyperparameter and the PSOA hyperparameter set are selected among a plurality of choices based on the first TOF estimate, so as to obtain the second TOF estimate which has greater accuracy than the first TOF estimate.