公开(公告)号：US20190155396A1

公开(公告)日：2019-05-23

申请号：US16252477

申请日：2019-01-18

Applicant: Google LLC ,  The Board of Trustees of the Leland Stanford Junior University

Inventor： Jaime Lien ,  Erik M. Olson ,  Patrick M. Amihood ,  Ivan Poupyrev

IPC: G06F3/01 ,  G01S13/58 ,  G01S13/66 ,  G01S7/41 ,  G01S13/89 ,  G01S13/88

Abstract: This document describes techniques for radio frequency (RF) based micro-motion tracking. These techniques enable even millimeter-scale hand motions to be tracked. To do so, radar signals are used from radar systems that, with conventional techniques, would only permit resolutions of a centimeter or more.

公开(公告)号：US20180348339A1

公开(公告)日：2018-12-06

申请号：US15928386

申请日：2018-03-22

Applicant: Google LLC

Inventor： Jaime Lien ,  Changzhan Gu ,  Erik M. Olson

IPC: G01S7/00

Abstract: Techniques and apparatuses are described that enable radar modulations for radar sensing using a wireless communication chipset. A controller initializes or controls modulations performed by the wireless communication chipset. In this way, the controller can enable the wireless communication chipset to perform modulations for wireless communication or radar sensing. In some cases, the controller can further select a wireless communication channel for setting a frequency and a bandwidth of a radar signal, thereby avoiding interference between multiple radar signals or between the radar signal and a communication signal. In other cases, the controller can cause the wireless communication chipset to modulate a signal containing communication data using a radar modulation. This enables another device that receives the signal to perform wireless communication or radar sensing. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.