Patent ID: 11921242
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A method, comprising:
obtaining an electric echo signal representing a time-of-flight signal from a device and reflected back from an object;
determining a noise power of the electric echo signal;
generating a first envelope signal indicative of an envelope of the electric echo signal;
determining a portion of the first envelope signal;
generating a second envelope signal based on the portion of the first envelope signal and the noise power of the electric echo signal using an Unscented Kalman Filter; and
calculating a travel time of the time-of-flight signal based on the second envelope signal,
determining an operative parameter of the first envelope signal based on Particle Swarm Optimization, wherein the determining of the portion of the first envelope signal includes determining the portion of the first envelope signal based on the operative parameter.