Wideband acoustic positioning with precision calibration and joint parameter estimation
AssigneeSkyworks Solutions, Inc.
InventorsJames McNames, Amit Kumar
Life of this patent
Estimating the term…
Abstract
A system includes at least one processor and at least one memory storing program instructions that, when executed by the at least one processor, cause the system to send an acoustic ranging transmitter signal between a plurality of calibration reference positions and at least one anchor point, receive an acoustic ranging receiver signal associated with the acoustic ranging transmitter signal and with distances between the plurality of calibration reference positions and the at least one anchor point, and estimate a speed of sound based on the acoustic ranging receiver signal.
Claims22
A system, comprising:
- at least one processor;
- and at least one memory storing program instructions that, when executed by the at least one processor, cause the system to:
- send an acoustic ranging transmitter signal between a plurality of calibration reference positions and at least one anchor point, receive an acoustic ranging receiver signal associated with the acoustic ranging transmitter signal and with distances between the plurality of calibration reference positions and the at least one anchor point, and estimate a speed of sound, a signal acquisition delay, and a position of the at least one anchor point based on the acoustic ranging receiver signal.
A method, comprising:
- sending an acoustic ranging transmitter signal between a plurality of calibration reference positions and at least one anchor point;
- receiving an acoustic ranging receiver signal associated with the acoustic ranging transmit signal and with distances between the plurality of calibration reference positions and the at least one anchor point;
- and
- estimating a speed of sound, a signal acquisition delay, and a position of the at least one anchor point based on the acoustic ranging receiver signal.
A method, comprising:
- positioning an acoustic transmitter at each of a plurality of calibration reference positions;
- at each calibration reference position, sending an acoustic ranging transmitter signal from the acoustic transmitter and receiving the acoustic ranging transmitter signal with one or more acoustic receivers situated at respective anchor points of an acoustic detection volume;
- and estimating a speed of sound, a signal acquisition delay, and a position of the at least one anchor point based on the received acoustic ranging transmitter signals.
Dependencies are inferred from the claim text.