Results 151 to 160 of about 11,947 (254)

Signal Analysis, Signal Demodulation and Numerical Simulation of a Quasi-Distributed Optical Fiber Sensor Based on FDM/WDM Techniques and Fabry-Pérot Interferometers. [PDF]

open access: yesSensors (Basel), 2019
Guillen Bonilla JT   +6 more
europepmc   +1 more source

Wavelet Transform‐Based Atomic Force Microscopy: A Computational Paradigm for Dynamic Nanoscale Imaging and Characterisation

open access: yesSmall Science, Volume 6, Issue 8, August 2026.
Wavelet transform‐based AFM enables real‐time nanoscale imaging by applying wavelet analysis to raw cantilever deflection signals. It reveals non‐linear, transient and multi‐frequency dynamics beyond conventional steady‐state methods. Integrated with adaptive filtering and digital twin modelling, it produces high‐resolution, information‐rich maps of ...
Pardis Biglarbeigi   +4 more
wiley   +1 more source

Multi-Band Torsional Vibration Amplitude Demodulation for Planetary Gearbox Fault Diagnosis Under Time-Varying Speed Conditions

open access: yesIEEE Access
Torsional vibration signal analysis is promising for diagnosing gear faults in planetary gearboxes. However, early-stage fault signatures are relatively-weak and may be ignored or wrongly identified in conventional demodulation analysis, especially under
Xiaowang Chen   +3 more
doaj   +1 more source

Digital signal processor-based fiber optic interferometric sensor phase demodulation [PDF]

open access: yes, 1996
This paper discusses digital signal processor-based techniques for the demodulation of phase-generated carrier signals returning from interferometric sensors. A discussion of the basics of sensor construction is included. Two phase extraction methods are
Bunn, James Brett
core   +1 more source

Analysis of the Charge Structure and Lightning Activity During a Severe Beijing Thunderstorm via an Innovative Balloon‐Borne 3D Electric Field Observation System

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract We developed an innovative balloon‐borne observation system based on China's BeiDou sounding platform that integrates a three‐axis electric field sensor for in‐cloud measurements of thunderstorm electrification. On 13 May 2025, this system was deployed during a severe convective storm over Beijing. In combination with multisource observations,
Ye Tian   +10 more
wiley   +1 more source

On Iterative Detection, Demodulation and Decoding for OFDM-CDM [PDF]

open access: yes, 2006
In this paper, we address iterative receiver processing for OFDM code division multiplexing (OFDM-CDM). The receiver algorithm we focus on is soft parallel interference cancellation in combination with a-priori demodulation.
Raulefs, Ronald   +3 more
core  

Broadband receiver of narrowband signal based on the cascaded stochastic resonance

open access: yesTongxin xuebao, 2015
To improve the demodulation gain of traditional narrowband receiver,a narrowband signal receiving method of broadband based on cascaded stochastic resonance is proposed.On one hand,the noise in the signal is converted to the signal energy by the ...
Cheng-guo HOU, Bo-wen LUO, Di LI
doaj  

Detection and Diagnosis of Rolling Element Bearing Faults Using Time Encoded Signal Processing and Recognition [PDF]

open access: yes
This thesis presents a systematic study of using TESPAR (Time Encoded Signal Processing and Recognition), which presently is in use as an effective tool for speech recognition and shows great advantages in computational demands and accuracy, to develop a
Abdusslam, Shukri Ali
core  

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