公开(公告)号：US20210250087A1

公开(公告)日：2021-08-12

申请号：US17301515

申请日：2021-04-05

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Justin Hayward ,  Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01D5/353 ,  G01H9/00 ,  G01M11/00

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US20210226698A1

公开(公告)日：2021-07-22

申请号：US17301516

申请日：2021-04-05

Applicant: AT&T Intellectual Property II, L.P.

Inventor： ANDREW LEWIS ,  Stuart Russell

IPC: H04B10/071 ,  G01M11/00 ,  G01D5/353 ,  G01H9/00

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US10972181B2

公开(公告)日：2021-04-06

申请号：US16817517

申请日：2020-03-12

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Justin Hayward ,  Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01D5/353 ,  G01H9/00 ,  G01M11/00

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US20190386740A1

公开(公告)日：2019-12-19

申请号：US16555344

申请日：2019-08-29

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Justin Hayward ,  Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01D5/353 ,  G01M11/00

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US10454573B2

公开(公告)日：2019-10-22

申请号：US15673852

申请日：2017-08-10

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Justin Hayward ,  Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01D5/353 ,  G01M11/00

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US10447388B2

公开(公告)日：2019-10-15

申请号：US15678546

申请日：2017-08-16

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01M11/00 ,  G01D5/353

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US20170366257A1

公开(公告)日：2017-12-21

申请号：US15673852

申请日：2017-08-10

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Justin Hayward ,  Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01D5/353 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01D5/353 ,  G01D5/35358 ,  G01M11/3109

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US09787394B2

公开(公告)日：2017-10-10

申请号：US14622193

申请日：2015-02-13

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01D5/35364 ,  G01M11/3127 ,  G01M11/3172

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US20170346551A1

公开(公告)日：2017-11-30

申请号：US15678546

申请日：2017-08-16

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Andrew B. Lewis ,  Stuart Russell

IPC: H04B10/071 ,  G01M11/00

CPC classification number: H04B10/071 ,  G01D5/35364 ,  G01M11/3127 ,  G01M11/3172

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

公开(公告)号：US20150160092A1

公开(公告)日：2015-06-11

申请号：US14622193

申请日：2015-02-13

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Andrew B. Lewis ,  Stuart Russell

IPC: G01M11/00

CPC classification number: H04B10/071 ,  G01D5/35364 ,  G01M11/3127 ,  G01M11/3172

Abstract: An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected.

Abstract translation: 在一个实施例中，用于声学感测的改进技术涉及向介质发射多组脉冲调制电磁波。 组内脉冲中的电磁波频率与组内另一脉冲电磁波的频率不同。 检测由介质散射的能量，并且在一个实施例中，拍频信号可以用于确定介质的环境的特性。 例如，如果介质是根据本发明已经发射光脉冲的掩埋光纤，则可以检测在埋入光纤的区域内的声波的存在。