-
1.发明公开
公开(公告)号：EP4386371A3
公开(公告)日：2024-09-11
申请号：EP24166968.8
申请日：2020-09-11
CPC分类号： G01N29/2418 , G01N2291/0282720130101 , G01N29/4436 , G01N2291/0288120130101 , Y02A90/10 , G01N29/04
摘要： The invention relates to a signal processing method for optical fiber distribution measurement, using an optical fiber distribution measurement system (100), the method comprising: with use of two kinds of signals that are an elastic wave measurement signal obtained by analyzing a phase shift of Rayleigh scattering light measured in a measurement time of 1 millisecond or less, and a temperature-strain distribution measurement signal obtained by analyzing a frequency shift of Rayleigh scattering light measured in a measurement time of 30 seconds or more by tunable wavelength coherent optical time domain reflectometry, calculating the phase error from the temperature-strain distribution measurement signal, and correcting the elastic wave measurement signal by the phase error.
-
-
3.发明公开
公开(公告)号：EP4386371A2
公开(公告)日：2024-06-19
申请号：EP24166968.8
申请日：2020-09-11
IPC分类号： G01N29/04
CPC分类号： G01N29/2418 , G01N2291/0282720130101 , G01N29/4436 , G01N2291/0288120130101 , Y02A90/10 , G01N29/04
摘要： The invention relates to a signal processing method for optical fiber distribution measurement, using an optical fiber distribution measurement system (100), the method comprising: with use of two kinds of signals that are an elastic wave measurement signal obtained by analyzing a phase shift of Rayleigh scattering light measured in a measurement time of 1 millisecond or less, and a temperature-strain distribution measurement signal obtained by analyzing a frequency shift of Rayleigh scattering light measured in a measurement time of 30 seconds or more by tunable wavelength coherent optical time domain reflectometry, calculating the phase error from the temperature-strain distribution measurement signal, and correcting the elastic wave measurement signal by the phase error.
-
公开(公告)号：EP4014080A1
公开(公告)日：2022-06-22
申请号：EP20855316.4
申请日：2020-08-14
IPC分类号： G02B6/44 , E21B47/117
-
5.发明公开
公开(公告)号：EP4028757A1
公开(公告)日：2022-07-20
申请号：EP20862088.0
申请日：2020-09-11
-
6.发明公开
公开(公告)号：EP4018211A1
公开(公告)日：2022-06-29
申请号：EP20855199.4
申请日：2020-08-21
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.01 秒)
