• Sonuç bulunamadı

Field test and fading measurement of a distributed acoustic sensor system over a 50 km-long fiber

N/A
N/A
Protected

Academic year: 2021

Share "Field test and fading measurement of a distributed acoustic sensor system over a 50 km-long fiber"

Copied!
8
0
0

Yükleniyor.... (view fulltext now)

Tam metin

Şekil

Fig . 3 shows the Rayleigh backscattering trace of the DAS along the fiber without disturbance, which exhibits a jagged
Figure 4 .  Sensing fiber link and field test configuration for DAS system
Figure 6. Histograms of SNRs at distances 100 m, 12 km, 21 km, 30 km, 40 km and 50 km
Figure 7. Mean SNR values in 6 different regions. It shows a linear decrease in dB scale and the system has a performance  of 22.5 dB at 50 km

Referanslar

Benzer Belgeler

Multivariate analysis of these variables revealed that age >60, ASA grade ≥3, APACHE II score ≥11, operations performed within on-call hours, and presence of peritonitis were

Cardiac syndrome X (CSX), also called microvascular angina, is defined as patients with angina-like chest pain with detectable ischemia in various tests [such as exercise stress

Then, the production of electrospun nanofibers from CD-ICs of flavour/fragrances without using a polymer matrix was achieved and the release and shelf life of these

It can be observed that for positive gate volt- ages the signal increases and for negative gate voltages it decreases on the entire sensitivity range of PbS.. Similar re- sults

It is shown that in contrast to a purely cohesive or purely elastic interface model that results in a uniform size dependent response, the general imperfect interfaces lead to

Özge ¸S afak, Özlem Çavu ¸s , M. Our model differs from the existing two-stage stochastic models by consider- ing not only flight timing and potential passenger demand, but

Figure 3.7: BER performance of rate 0.78 (28% OH) RS2-Polar code under SC List 4 decoding and 6 iterations on AWGN channel and BPSK modulation.. Figure 3.9 shows the third

The spider genus Zodarion Walckenaer, 1826 includes 138 species, which are distributed throughout the Mediterranean basin (Platnick, 2013) but have limited distribution