Angular velocity sensing using arrays of antennas

US11035944B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Sanghoek Kim · Palo Alto, US
• Stephen Bennett · San Francisco, US
• Ricky Keangpo Ho · San Jose, US
• Shi Cheng · Sunnyvale, US
• Sohrab Emami · Hillsboro, US
• Ou Yang · 戴家巷社区, CN

Key dates

• Filing date: May 28, 2020
• Grant date: Jun 15, 2021
• Expiry date: May 28, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/12
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Various techniques are provided to efficiently detect the position and angular velocity of an object relative to a compact radar system including a transmitter antenna array and a receiver antenna array. In one example, a method includes repeatedly scanning a transmitter antenna array and a receiver antenna array of an object sensing system through a plurality of designated transmitter and receiver channels over a period of time to generate a time series of measured channel responses corresponding to each one of the designated channels, determining a time series of directional vectors to or from an object scanned by at least one of the designated channels, and/or a corresponding time series of average phase differences, based, at least in part, on the time series of measured channel responses, and determining an angular velocity of the object from the time series of directional vectors and/or the corresponding time series of average phase differences.