Results 11 to 20 of about 4,455,887 (219)
Shock and Vibration, 2015 When a local defect occurs in gearbox, the vibration signals present as the form of multicomponent amplitude modulation and frequency modulation (AM-FM). Demodulation analysis is an effective way for this kind of signal.
Songrong Luo +2 more
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Self-Mixing Demodulation for Coherent Phase-Sensitive OTDR System
Sensors, 2016 Phase-sensitive optical time domain reflectometry (Ф-OTDR) attracts much attention due to its capability of telling the type and position of an intrusion simultaneously.
Haijun He +7 more
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Applied SciencesThe four buckets phase demodulation method is a widely used sinusoidal modulation and demodulation technique in interferometry. Strict calibration is essential to minimize nonlinear errors in subsequent measurements. The core of the algorithm calibration
Qi Liu +5 more
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Improving the demultiplexing performances of the multiple Bessel Gaussian beams (mBGBs)
Results in Physics, 2021 As approximate non-diffracted beams, Bessel Gaussian (BG) beams are more suitable to be used in free-space optical (FSO) communication system than Laguerre Gaussian (LG) vortex beams because of its self-recovering property. However, due to the limitation
Chaofan Gong +5 more
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IEEE Access, 2020 Three-component fiber optic seismometers are widely used in the detection of seismic signals. The arctangent approach of phase-generated carrier (PGC-Arctan) demodulation algorithm is one of the commonly used demodulation techniques in FOISs.
Changbo Hou +4 more
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Meitan kexue jishu, 2023 Whether the self-demodulation of mechanism interference can be realized in the self-driven execution process of filling operation is the basis for the solid filling hydraulic support to achieve intelligence.
Tingcheng ZONG +5 more
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Asymmetric Acoustic Propagation of Wave Packets Via the Self-Demodulation Effect [PDF]
Physical Review Letters, 2015 This article presents the experimental characterization of nonreciprocal elastic wave transmission in a single-mode elastic waveguide. This asymmetric system is obtained by coupling a selection layer with a conversion layer: the selection component is provided by a phononic crystal, while the conversion is achieved by a nonlinear self-demodulation ...
Devaux, Thibaut +3 more
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Electronics Letters, 2023 This letter presents an improved Self‐Interference Cancellation (SIC) receiver with Demodulation Reference Signal (DMRS)‐based power estimation for In‐band Full‐duplex (IBFD) transmission.
J. K. Kim
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High Precision Self-Mixing Interferometer Based on Reflective Phase Modulation Method
IEEE Access, 2020 In this paper, a novel self-mixing interferometer based on reflective phase modulation (RPM) method has been developed to perform micro-displacement reconstruction with nanometer accuracy. Broaden harmonic components spectrum of the self-mixing signal is
Liping Lu +5 more
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High Precision Estimation of Laser FM-Noise Using RF Quadrature Demodulation Techniques
IEEE Access, 2022 We report on a technique that uses RF quadrature demodulation to measure laser FM-noise based on a delayed self-heterodyne setup. The measurement is self-referencing and the FM-noise can be measured with high precision over a sufficiently long duration ...
Sean P. O'duill, Liam P. Barry
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