Patent ID: 11858625
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 4:
5. A method, comprising:
receiving, using one or more audio sensors of a vehicle and at a first time, a first noise produced by a first propulsion mechanism of a plurality of propulsion mechanisms of the vehicle;
receiving, using the one or more audio sensors and at a second time, a second noise produced by a second propulsion mechanism of the plurality of propulsion mechanisms;
receiving, using the one or more audio sensors and at a third time that is subsequent to the first time, a first reflection of the first noise reflected by an object within an environment;
receiving, using the one or more audio sensors and at a fourth time that is subsequent to the second time, a second reflection of the second noise reflected by the object within the environment;
determining, based at least in part on the first time and the third time, a first set of solutions corresponding to a first measured distance of the object with respect to the vehicle;
determining, based at least in part on the second time and the fourth time, a second set of solutions corresponding to a second measured distance of the object with respect to the vehicle; and
determining a distance and a direction of the object with respect to the vehicle as an intersection between the first set of solutions and the second set of solutions.