ArticleSensors (Basel, Switzerland)2020
Performance Improvement of Dual-Pulse Heterodyne Distributed Acoustic Sensor for Sound Detection.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Hardware-Efficient Phase Demodulation for DigitalSensors (Basel, Switzerland) · 2025Article
- Decoding Fluid Flow Characteristics Through Distributed Acoustic Sensing: A Novel Approach.Sensors (Basel, Switzerland) · 2025Article
- Detection of Gas Pipeline Leakage Using Distributed Optical Fiber Sensors: Multi-Physics Analysis of Leakage-Fiber Coupling Mechanism in Soil Environment.Sensors (Basel, Switzerland) · 2023Article
- Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective.Sensors (Basel, Switzerland) · 2022Review
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Authors and funding
6 authors.
Funding
Abstract
Phase fading is fatal to the performance of distributed acoustic sensors (DASs) influencing its capability of distributed measurement as well as its noise level. Here, we report the experimental observation of a strong negative correlation between the relative power spectrum density (PSD) at the heterodyne frequency and the noise floor of the detected phase for the heterodyne demodulated distributed acoustic sensor (HD-DAS) system. We further propose a weighted-channel stack algorithm (WCSA) to alleviate the phase fading noise via an enhancement of the relative PSD at the heterodyne frequency. Experimental results show that the phase noise of the demodulated signal can be suppressed by 13.7 dB under optimal condition. As a potential application, we exploited the improved HD-DAS system to retrieve a piece of music lasted for 205 s, demonstrating the reliability of detecting wideband sound signal without distortion.
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Registered trials
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