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

Claim 14:
15. An aerial vehicle apparatus, comprising:
a first propulsion mechanism;
a second propulsion mechanism;
one or more audio sensors;
one or more processors; and
a memory storing program instructions that when executed by the one or more processors cause the one or more processors to at least:
receive a first noise detected by the one or more audio sensors at a first time, the first noise produced by the first propulsion mechanism;
receive a second noise detected by the one or more audio sensors at a second time, the second noise produced by the second propulsion mechanism, wherein the first noise is different than the second noise;
receive a first reflection of the first noise detected by the one or more audio sensors at a third time;
receive a second reflection of the second noise detected by the one or more audio sensors at a fourth time;
determine, 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 an object with respect to the aerial vehicle apparatus;
determine, 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 aerial vehicle apparatus; and
determine a distance and a direction of the object with respect to the aerial vehicle apparatus as an intersection of the first set of solutions and the second set of solutions.