公开(公告)号：US20150219755A1

公开(公告)日：2015-08-06

申请号：US14170879

申请日：2014-02-03

Applicant: Google Inc.

Inventor： Geoffrey Allen Borggaard ,  Daniel George Koulomzin ,  Christopher Richard Wren

IPC: G01S11/14

CPC classification number: G01S11/14 ,  G01S5/0284 ,  G01S5/186 ,  G01S5/30 ,  G01S15/74

Abstract: Disclosed are methods and systems for determining distance between two or more mobile devices utilizing a sound emitted from each device such as a chirp. Each device may determine or receive an indication of a time reference for each instance the device emits or detects a chirp. Utilizing the time reference data, the distance between the two or more devices may be determined assuming the sound travels at a constant speed of 340.29 m/s. Techniques for disambiguating orientation of the devices relative to one another rare also disclosed.

Abstract translation: 公开了用于确定利用从每个设备发出的声音（诸如啁啾声）的两个或多个移动设备之间的距离的方法和系统。 每个设备可以确定或接收设备发射或检测啁啾的每个实例的时间参考的指示。 假设声音以340.29m / s的恒定速度行进，则可利用时间参考数据来确定两个或多个设备之间的距离。 用于消除装置相对于彼此的取向的技术也被公开。