Synthetic Spectrum Approach for Brillouin Optical Time-Domain Reflectometry

Autor: Ken'ichi Nishiguchi, Che-Hsien Li, Artur Guzik, Kinzo Kishida

Publikováno v: Sensors, Vol 14, Iss 3, Pp 4731-4754 (2014)

We propose a novel method to improve the spatial resolution of Brillouin optical time-domain reflectometry (BOTDR), referred to as synthetic BOTDR (S-BOTDR), and experimentally verify the resolution improvements. Due to the uncertainty relation betwe

Externí odkaz: https://doaj.org/article/65b0a7a96ee04648beac04d27c8ef690

Near-Field Synthetic Spectrum Imaging Algorithm Based on Single-Frequency Sparse MIMO Array

Autor: Chao Li, Xiaojun Liu, Guangyou Fang, Hui Wang, Shiyou Wu

Publikováno v: IEEE Antennas and Wireless Propagation Letters. 18:1946-1950

This letter presents a two-dimensional near-field synthetic spectrum imaging algorithm based on a single-frequency sparse multiple-input–multiple-output (MIMO) array. By using an especially defined backward spreading function, the proposed algorith

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e64096795d9a68393e3f991b679ffdd6
https://doi.org/10.1109/lawp.2019.2934753

Implementation of Spectrum Analysis Functionality for IQ-Signal

Autor: Anbessa, Gedion Biredaw

The spectrum analyzer is a standard tool used to measure signals in the frequency domain. Traditional spectrum analyzers are based on sweeping a local oscillator and using this to mix signals down to an intermediate frequency (IF) and, subsequently f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______681::5cfb5141852bcc653a98f6d665579fe1
http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32025

Atmospheric model and synthetic spectrum of LL Aquarii using Kurucz model

Autor: M. B. Saputra

Publikováno v: Journal of Physics: Conference Series. 1523:012021

Not only have interior structures, but stars also have an atmosphere. Physical processes and phenomena that occur in the atmosphere of a star also have a relationship with the stellar interior. One of them is the energy transport process produced fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cde2b5a879317737e3dca1cb33a02331
https://doi.org/10.1088/1742-6596/1523/1/012021

Growing evidence that SNe Iax are not a one-parameter family: the case of PS1-12bwh

Autor: Darryl Wright, Nick Kaiser, Ryan Chornock, M. R. Magee, D. A. Howell, Edo Berger, Stephen J. Smartt, Ryan J. Foley, Stuart A. Sim, Rubina Kotak, R. Wainscot, Christopher Waters, Eugene A. Magnier

Publikováno v: Magee, M R, Kotak, R, Sim, S A, Wright, D, Smartt, S J, Berger, E, Chornock, R, Foley, R J, Howell, A, Kaiser, N, Magnier, E A, Wainscot, R & Waters, C 2017, ' Growing evidence that SNe Iax are not a one-parameter family: the case of PS1-12bwh ', Astronomy and Astrophysics, vol. 601, A62 . https://doi.org/10.1051/0004-6361/201629643

In this study, we present observations of a type Iax supernova, PS1-12bwh, discovered during the Pan-STARRS1 3$\pi$-survey. Our analysis was driven by previously unseen pre-maximum, spectroscopic heterogeneity. While the light curve and post-maximum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95abab9871ee8651ce78e0373a349797
https://pure.qub.ac.uk/en/publications/growing-evidence-that-sne-iax-are-not-a-oneparameter-family-the-case-of-ps112bwh(837031a4-2588-4302-9050-165ebbb7688c).html