RT info:eu-repo/semantics/article
T1 Sidelobe apodization in optical pulse compression reflectometry for fiber optic distributed acoustic sensing
A1 Mompó, J.J.
A1 Martín López, Sonia
A1 González Herráez, Miguel
A1 Loayssa, A.
K1 Remote sensing and sensors
K1 Fiber optics sensors
K1 Scattering
K1 Rayleigh
K1 Optical time domain reflectometry
K1 Pulse compression
K1 Ciencias tecnológicas
K1 Electrónica
K1 Technology
K1 Electronics
AB We demonstrate a technique to reduce the sidelobes in opticalpulse compression reflectometry for distributed acousticsensing. The technique is based on using a Gaussianprobe pulse with linear frequency modulation. This isshown to improve the sidelobe suppression by 13 dB comparedto the use of square pulses without any significantpenalty in terms of spatial resolution. In addition, a 2.25 dBenhancement in signal-to-noise ratio is calculated comparedto the use of receiver-side windowing. The method is testedby measuring 700 Hz vibrations with a 140 nϵ amplitudeat the end of a 50 km fiber sensing link with 34 cm spatialresolution, giving a record 147,058 spatially resolvedpoints.
PB Optical Society of America
SN 0146-9592
YR 2018
FD 2018-04
LK http://hdl.handle.net/10017/33079
UL http://hdl.handle.net/10017/33079
LA eng
NO European Commission
DS MINDS@UW
RD 20-abr-2024