| 发明名称 |
DUAL FREQUENCY ULTRASONIC LOCATIONING SYSTEM |
| 摘要 |
A dual frequency ultrasonic locationing system includes an emitter operable to emit two different ultrasonic frequencies simultaneously in one ultrasonic burst. A receiver with at least two microphones is operable to receive the ultrasonic burst. A correlator is operable to correlate the signals obtained from each microphone to derive a time difference of arrival of the ultrasonic burst at each microphone. The time difference of arrival of the ultrasonic signal from the emitter impinging on each microphone of the receiver is utilized to determine a location of the emitter. |
| 申请公布号 |
US2015212190(A1) |
申请公布日期 |
2015.07.30 |
| 申请号 |
US201514679244 |
申请日期 |
2015.04.06 |
| 申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
CALVARESE RUSSELL E.;LAVERY RICHARD J. |
| 分类号 |
G01S3/80 |
主分类号 |
G01S3/80 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A dual frequency ultrasonic locationing system, comprising:
at least one emitter operable to emit two different ultrasonic frequencies simultaneously in one ultrasonic burst; a receiver with at least two microphones operable to receive the ultrasonic burst; and a correlator operable to correlate the signals obtained from each microphone to derive a time difference of arrival of the ultrasonic burst between each microphone, wherein the time difference of arrival of the ultrasonic burst from the emitter impinging on each microphone is utilized with a multilateration locationing technique to determine a location of the emitter. |
| 地址 |
Lincolnshire IL US |
