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Nikita R. Poddubrovskii, Ivan A. Lobach and Sergey I. Kablukov
We report on the development of an optical frequency domain reflectometry (OFDR) system based on a continuous-wave Er-doped self-sweeping fiber laser. In this work, we investigate the influence of the input data processing procedure in an OFDR system on ...
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Gi-Won Shin, Jae-Hyeon Kim, Sun-Hee Lee, In-Young Bang, Ji-Hwan Kim, Yeon-Soo Park, Hee-Tae Kwon, Woo-Jae Kim and Gi-Ching Kwon
Upon reentering the Earth?s atmosphere from space, a reentry vehicle becomes enshrouded in an ionization layer. This layer is known as the reentry plasma sheath and is caused by aerodynamic heating. Owing to the oscillation of charged particles in the re...
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Agata Romanova and Vaidotas Barzdenas
The work reports on the development of a detailed noise current model for a low-noise capacitive feedback transimpedance amplifier (TIA) in CMOS. The proposed TIA circuit implements the programmable-gain using an array of discretely controlled feedback c...
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Dmitry N. Ignatenko, Alexey V. Shkirin, Yakov P. Lobachevsky and Sergey V. Gudkov
The review contains a systematization of the main approaches to the practical implementation of Mueller matrix polarimetry and the prospects for its application in biology and agriculture. The most typical optical layouts for measuring the Mueller matrix...
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Yi-Sha Ku, Po-Yi Chang, Han-Wen Lee, Chun-Wei Lo, Yi-Chang Chen and Chia-Hung Cho
We developed a telecentric 3D measurement system based on the fringe projection technique to measure phases corresponding to the 3D shape of bumps on a surface. A measurement algorithm based on an area scan camera with a flexibly programmable region of i...
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Victor D. Telekh, Aleksei V. Pavlov, Daniil V. Kirillov, Evgeny V. Vorob?ev, Alexander G. Turyanskiy, Viacheslav M. Senkov, Petr A. Tsygankov, Freddy F. Parada-Becerra, Vladimir R. Vesnin and Andrei S. Skriabin
This study discusses the main features of the irradiation of prospective multilayer coatings by VUV/UV radiation from compressed plasma flows. Such radiation is characterized by a broadband spectrum and high brightness fluxes. Oxide and Mo/Si bilayers we...
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Sang-Hyeon Kang, Youngjin Kim, Sangbong Lee, Heetae Kim and Minyoung Kim
The demand for efficient water use and automatic systems has been increasing due to the frequent drought damage to crops as a result of climate change, the shortage of water resources in rural areas, and the aging of farmers. The existing automatic irrig...
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Khurram Naeem, Bok Hyeon Kim, Dong-Jin Yoon and Il-Bum Kwon
We propose a weighted singular value decomposition (WSVD) to reduce the random noise in the Rayleigh backscattering signal of the phase-sensitive optical time domain reflectometry (F-OTDR) to enhance the detection performance of the distributed vibration...
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Sajad Tabibi, Renaldo Sauveur, Kelly Guerrier, Gerard Metayer and Olivier Francis
Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale. Geodetic GNSS-R is based on the simultaneous reception of Line-of-Sight (LoS) and its coh...
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Yajie Shi, Chao Ren, Zhiheng Yan and Jianmin Lai
Soil moisture is one of the critical variables in maintaining the global water cycle balance. Moreover, it plays a vital role in climate change, crop growth, and environmental disaster event monitoring, and it is important to monitor soil moisture contin...
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