公开(公告)号：US20230251345A1

公开(公告)日：2023-08-10

申请号：US18191998

申请日：2023-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiajia YOU ,  Yong CHEN ,  Jianhui LI ,  Zengcai SUN ,  Qi WANG

IPC: G01S5/18 ,  G06F3/14

CPC classification number: G01S5/18 ,  G06F3/1446

Abstract: A first electronic device determines that a first trigger condition is satisfied, sends a first instruction to enable a first sound wave transmitter to send a first sound wave signal, and sends a second instruction to enable a second sound wave transmitter to send a second sound wave signal. A second electronic device sends a third instruction to enable a first sound wave receiver to receive the first sound wave signal and the second sound wave signal, calculates a first receiving start moment and a second receiving start moment, obtains first location information, determines second location information based on the first receiving start moment, the second receiving start moment, and the first location information, and sends the second location information to the first electronic device. The first electronic device updates third location information by using the second location information.