Distributed acoustic sensing systems are fiber optic based optoelectronic instruments measuring acoustic interactions along the fiber optic sensing cable.
A system and method for detecting a change in strain for sensing changes in an optical sensing fiber is provided.A plurality of optical probe pulses of different optical frequencies (F1, F2,... FN) spaced apart by. Delta. F are transmitted into the sensing fiber.The backscattered light from...
An acoustic signal for flowing wells was obtained in all cases and for most of the wells it was possible to also extract qualitative information on the flow regime, speed of sound and an estimate for flow velocity in at least parts of the wells.Fiber optics based sensing has been used in...
Distributed acoustic sensing 申请(专利)号: GB20170000994 申请日: 2017-01-20 专利号: GB2558922A 公开公告日: 2018-07-25 主分类号: G01H9 分类号: G01H9; H04B10/25 申请权利人: FOCUS SENSORS LIMITED 发明设计人: EDWARD AUSTIN; WEIZHONG ZHAO 公开国代码: GB 申请国代码: GB 优先权国家: GB ...
AcoustiSens Wideband Single-Mode Optical Fibers, are vibration sensing fibers and cables with optimal performance for Distributed Acoustic Sensing (DAS) systems. Using a waveguide design based on the ITU-T G.657.A1 telecom-grade single-mode standard, AcoustiSens Wideband Optical Fibers significantly...
This application describes methods and apparatus for distributed acoustic sensing providing enhanced sensitivity for certain acoustic signals. The method uses a fibre optic distributed acoustic sensing (DAS) apparatus () to detect acoustic signals wherein the fibre optic distributed acoustic sensor comprises...
Due to the inherent characteristic of coherent fading phenomenon, the performance of distributed acoustic sensing system will be severely degraded, producing anomalous information and positioning errors. In order to suppress the influence of this phenomenon, the data array of demodulated results is obtaine...
求翻译:distributed acoustic sensing是什么意思?待解决 悬赏分:1 - 离问题结束还有 distributed acoustic sensing问题补充:匿名 2013-05-23 12:21:38 分布式声传感 匿名 2013-05-23 12:23:18 分布的音响感觉 匿名 2013-05-23 12:24:58 分布的音响感觉 匿名 2013-05-23 12:26:38 分布式声传感...
The perspectives of distributed acoustic sensors not only in biology and natural sciences, but also in arts, humanitarian sciences and culture are subjects of interest. In the next section, we will discuss how realistic and close these prospects are. 6. Acoustic Sensing and DAS in Humanitarian ...
AP Sensing offers distributed optical sensing technology (DTS, distributed temperature sensing, DAS, distributed acoustic sensing, DVS, distributed vibration sensing) for a wide range of applications. Based on our HP/Agilent heritage, with over 35 years of optical measurement expertise, we stand for ...