公开(公告)号：US20210311186A1

公开(公告)日：2021-10-07

申请号：US17195538

申请日：2021-03-08

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Ting WANG ,  Hansi LIU

IPC: G01S15/42 ,  G01V1/18 ,  G01V1/30 ,  G01D5/353

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing systems, methods, and structures that advantageously are employed to determine the location and depth of underground fiber-optic facilities that may be carrying telecommunications traffic.

公开(公告)号：US20210180997A1

公开(公告)日：2021-06-17

申请号：US17118529

申请日：2020-12-10

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Hansi LIU ,  Ting WANG

IPC: G01D5/353 ,  G01H9/00

Abstract: Aspects of the present disclosure describe systems, methods and structures providing non-destructive localization of underground optical fiber cables utilizing distributed fiber optic sensing (DFOS) and time difference of arrival techniques.