Results 91 to 100 of about 2,083,913 (216)
Design of underground precise positioning system based on CSS technology
Gong-kuang zidonghua, 2014 Most underground positioning systems can only provide regional positioning function and are unable to provide accurate real-time location information for personnels or equipments, a design scheme of underground precise positioning system based on CSS ...
ZHANG Kefan, ZHU Haixia, BAO Jianjun
doaj +1 more source
Coherent Stokes Raman Scattering for Simultaneous Measurement of CO2 and CH4 Temperatures
Journal of Raman Spectroscopy, Volume 57, Issue 10, Page 1644-1653, October 2026.A three‐beam hybrid fs/ps CSRS method is employed to excite the rovibrational transitions in the Fermi‐dyad of CO 2 and the v2 mode of CH 4. Time‐domain spectroscopic models are developed to extract the fuel and flame temperature profiles from experimental CH 4 and CO 2 spectra in a diffusion flame.
Alexander M. Warner +3 more
wiley +1 more source
New Trends in Computer SciencesLow-Power Wide-Area Networks (LPWANs) based on LoRa technology have gained prominence in Internet of Things (IoT) deployments due to their long-range communication capabilities and low power consumption.
Osemwegie Sam Omorogiuwa +2 more
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Ultra‐High Isolation Decoupling and Matching Network for mmWave Antennas in Near‐Range FMCW Radars
Microwave and Optical Technology Letters, Volume 68, Issue 10, October 2026.ABSTRACT A decoupling and matching network (DMN) based on substrate integrated coaxial line technique is proposed to suppress the mutual coupling between a pair of transmitting and receiving antennas operating at 35 GHz. The distorted radiation patterns, typically observed in closely spaced antennas, were improved by introducing carefully designed ...
Zhi Yue Xu, Xinyi Tang, Zhi Ning Chen
wiley +1 more source
Comparative Analysis Spread Spectrum and Parity Coding Steganography in E-commerce [PDF]
The transaction data online has increased compared to the previous communications that mostly in the form of voice and text messaging. To improve the security, data must be protected such a way that it cannot be attacked by unauthorized parties.
Brahim , W +3 more
core
Journal of ICT Research and Applications, 2013 The aim of this research is to investigate the performance of Welch based de-noising technique for a set of chirp signals corrupted by Gaussian noises.
Fendy Santoso
doaj
River, Volume 5, Issue 3, Page 369-387, August 2026.Abstract Estimating suspended sediment concentration (SSC) in river channels is essential for understanding hydro‐sedimentological processes, managing water quality, and conserving aquatic ecosystems. This study evaluated different empirical equations to estimate SSC in the lower Madeira River and analyzed its hydro‐sedimentary dynamics based on MODIS ...
Matheus Silveira de Queiroz +5 more
wiley +1 more source
Performance of Differential Chirp Spread Spectrum in Underwater Acoustic Channel
, 2023 International audienceIn recent years, connecting fishing nets underwater has received much interest in carrying out fishing activities efficiently and protecting the ocean from pollution, especially from ghost fishing.
Ferré, Guillaume, Rezzouki, Marwane
core
3D chirp sub-bottom imaging system: design and first 3D volume
, 2005 Chirp sub-bottom profilers are marine acoustic devices that use a known and repeatable source signature (1 – 24 kHz) to produce decimetre vertical resolution crosssections of the sub-seabed.
Henstock, Timothy J. +6 more
core +1 more source
SmartMat, Volume 7, Issue 5, October 2026.Azobenzene materials possess reversible photofluidization, promising for surface patterning. This review summarizes state‐of‐the‐art advances in azo‐material photofluidization, including photoisomerization mechanisms, molecular/polymer structural categories, emerging patterning applications, remaining challenges and future outlooks.
Jian Chen +4 more
wiley +1 more source