Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer
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. Nonlinear factors such as phase modulation depth(C) varia...
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| Format: | Article |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8957523/ |
| _version_ | 1818577865542729728 |
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| author | Changbo Hou Guowei Liu Shuai Guo Shuaifei Tian Yonggui Yuan |
| author_facet | Changbo Hou Guowei Liu Shuai Guo Shuaifei Tian Yonggui Yuan |
| author_sort | Changbo Hou |
| collection | DOAJ |
| description | 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. Nonlinear factors such as phase modulation depth(C) variation and light intensity disturbance (LID) have an important impact on performance of traditional PGC demodulation algorithms. This paper introduces a new demodulation algorithm called Kalman filtering ellipse (PGC-Arctan-EKF) demodulation algorithm, which can improve the robustness of the fitting. In order to meet the requirements of high performance and low power consumption of seafloor sensing, Tri-Component fiber optic seismometer based on SoC(ARM +FPGA) is proposed in this paper. The phase self-noise of the system is better than -115 dB re rad/Hz<sup>1/2</sup>,and the large signal can reach 66 dB re rad/Hz<sup>1/2</sup> @220Hz with the THD is -61.22 dB. |
| first_indexed | 2024-12-16T06:36:42Z |
| format | Article |
| id | doaj.art-5f867b87d2ba46c2ac1235089b7c1399 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T06:36:42Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-5f867b87d2ba46c2ac1235089b7c13992022-12-21T22:40:46ZengIEEEIEEE Access2169-35362020-01-018150851509210.1109/ACCESS.2020.29662808957523Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic SeismometerChangbo Hou0https://orcid.org/0000-0002-6421-3481Guowei Liu1https://orcid.org/0000-0001-7793-1426Shuai Guo2https://orcid.org/0000-0001-8970-3914Shuaifei Tian3https://orcid.org/0000-0002-0835-7560Yonggui Yuan4https://orcid.org/0000-0001-9165-9537College of Information and Communication Engineering, Harbin Engineering University, Harbin, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin, ChinaCollege of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, ChinaCollege of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, ChinaThree-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. Nonlinear factors such as phase modulation depth(C) variation and light intensity disturbance (LID) have an important impact on performance of traditional PGC demodulation algorithms. This paper introduces a new demodulation algorithm called Kalman filtering ellipse (PGC-Arctan-EKF) demodulation algorithm, which can improve the robustness of the fitting. In order to meet the requirements of high performance and low power consumption of seafloor sensing, Tri-Component fiber optic seismometer based on SoC(ARM +FPGA) is proposed in this paper. The phase self-noise of the system is better than -115 dB re rad/Hz<sup>1/2</sup>,and the large signal can reach 66 dB re rad/Hz<sup>1/2</sup> @220Hz with the THD is -61.22 dB.https://ieeexplore.ieee.org/document/8957523/Tri-component fiber optic seismometerPGC-arctan-EKFellipse fittingSoC |
| spellingShingle | Changbo Hou Guowei Liu Shuai Guo Shuaifei Tian Yonggui Yuan Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer IEEE Access Tri-component fiber optic seismometer PGC-arctan-EKF ellipse fitting SoC |
| title | Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer |
| title_full | Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer |
| title_fullStr | Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer |
| title_full_unstemmed | Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer |
| title_short | Large Dynamic Range and High Sensitivity PGC Demodulation Technique for Tri-Component Fiber Optic Seismometer |
| title_sort | large dynamic range and high sensitivity pgc demodulation technique for tri component fiber optic seismometer |
| topic | Tri-component fiber optic seismometer PGC-arctan-EKF ellipse fitting SoC |
| url | https://ieeexplore.ieee.org/document/8957523/ |
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