Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality
In this paper, we presented results of influence of the dynamic range in fiber-optic streamer signal processing circuit on the quality of recorded seismograms. By contrast with the existing hydroacoustic systems, which based on piezoceramic transducers, dynamic range limitations in a fiber-optic tow...
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Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
2022
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Online Access: | https://doi.org/10.17586/2226-1494-2022-22-2-223-231 https://doaj.org/article/479bd22eed4148b1a85bd4052fc9ae58 |
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ftdoajarticles:oai:doaj.org/article:479bd22eed4148b1a85bd4052fc9ae58 2023-05-15T17:04:45+02:00 Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality Alina N. Arzhanenkova Michael Yu. Plotnikov George P. Miroshnichenko Pavel Yu. Dmitraschenko 2022-04-01T00:00:00Z https://doi.org/10.17586/2226-1494-2022-22-2-223-231 https://doaj.org/article/479bd22eed4148b1a85bd4052fc9ae58 EN RU eng rus Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) https://ntv.ifmo.ru/file/article/21115.pdf https://doaj.org/toc/2226-1494 https://doaj.org/toc/2500-0373 doi:10.17586/2226-1494-2022-22-2-223-231 2226-1494 2500-0373 https://doaj.org/article/479bd22eed4148b1a85bd4052fc9ae58 Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 22, Iss 2, Pp 223-231 (2022) fiber-optic streamer seismoacoustic research interferometric measurements dynamic range reflected wave method common depth point Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 article 2022 ftdoajarticles https://doi.org/10.17586/2226-1494-2022-22-2-223-231 2022-12-31T00:24:39Z In this paper, we presented results of influence of the dynamic range in fiber-optic streamer signal processing circuit on the quality of recorded seismograms. By contrast with the existing hydroacoustic systems, which based on piezoceramic transducers, dynamic range limitations in a fiber-optic towed streamer do not lead to clipping of acoustic signals, but to complex nonlinear distortions that affect both the amplitude and phase frequency characteristics of the recorded signals. Therefore, main task of this work is to assess the distortion of seismograms obtained from acoustic signals recorded under limited dynamic range conditions of fiber-optic towed seismic streamer. To solve this problem, seismic signals obtained during field tests for various types of seismic streamers in the water area of Kola Bay are used. The recorded acoustic signals in the form of digital readings, converted into radians, taking into account the known sensitivity coefficient of hydrophones of the towed seismic streamer, are converted into digital reports of optical interference signals. Interference signals in digital form are equivalent to real optical signals recorded by the receiving path in the signal processing unit of the fiber optic streamer. The digital form of the recorded acoustic signals makes it possible to amplify them by multiplying them by a given gain factor, simulating various energy levels of an acoustic source. Further, these signals served as input data in the mathematical model of the signal processing circuit of the fiber-optic towed streamer, which takes into account the fundamental limitations of the dynamic range due to the finite sampling frequency of the interference signal, the fixed frequency of the auxiliary phase modulation, and the finite bandwidth of the low-pass filters used. Thus, it is possible to simulate the process of recording acoustic signals of a fiber-optic towed seismic streamer both without distortion and under conditions of limited dynamic range. As a result, signals from the output of ... Article in Journal/Newspaper Kola Bay Directory of Open Access Journals: DOAJ Articles Scientific and Technical Journal of Information Technologies, Mechanics and Optics 22 2 223 231 |
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topic |
fiber-optic streamer seismoacoustic research interferometric measurements dynamic range reflected wave method common depth point Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 |
spellingShingle |
fiber-optic streamer seismoacoustic research interferometric measurements dynamic range reflected wave method common depth point Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 Alina N. Arzhanenkova Michael Yu. Plotnikov George P. Miroshnichenko Pavel Yu. Dmitraschenko Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
topic_facet |
fiber-optic streamer seismoacoustic research interferometric measurements dynamic range reflected wave method common depth point Optics. Light QC350-467 Electronic computers. Computer science QA75.5-76.95 |
description |
In this paper, we presented results of influence of the dynamic range in fiber-optic streamer signal processing circuit on the quality of recorded seismograms. By contrast with the existing hydroacoustic systems, which based on piezoceramic transducers, dynamic range limitations in a fiber-optic towed streamer do not lead to clipping of acoustic signals, but to complex nonlinear distortions that affect both the amplitude and phase frequency characteristics of the recorded signals. Therefore, main task of this work is to assess the distortion of seismograms obtained from acoustic signals recorded under limited dynamic range conditions of fiber-optic towed seismic streamer. To solve this problem, seismic signals obtained during field tests for various types of seismic streamers in the water area of Kola Bay are used. The recorded acoustic signals in the form of digital readings, converted into radians, taking into account the known sensitivity coefficient of hydrophones of the towed seismic streamer, are converted into digital reports of optical interference signals. Interference signals in digital form are equivalent to real optical signals recorded by the receiving path in the signal processing unit of the fiber optic streamer. The digital form of the recorded acoustic signals makes it possible to amplify them by multiplying them by a given gain factor, simulating various energy levels of an acoustic source. Further, these signals served as input data in the mathematical model of the signal processing circuit of the fiber-optic towed streamer, which takes into account the fundamental limitations of the dynamic range due to the finite sampling frequency of the interference signal, the fixed frequency of the auxiliary phase modulation, and the finite bandwidth of the low-pass filters used. Thus, it is possible to simulate the process of recording acoustic signals of a fiber-optic towed seismic streamer both without distortion and under conditions of limited dynamic range. As a result, signals from the output of ... |
format |
Article in Journal/Newspaper |
author |
Alina N. Arzhanenkova Michael Yu. Plotnikov George P. Miroshnichenko Pavel Yu. Dmitraschenko |
author_facet |
Alina N. Arzhanenkova Michael Yu. Plotnikov George P. Miroshnichenko Pavel Yu. Dmitraschenko |
author_sort |
Alina N. Arzhanenkova |
title |
Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
title_short |
Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
title_full |
Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
title_fullStr |
Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
title_full_unstemmed |
Investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
title_sort |
investigation of the dynamic range restrictions influence of the fiber-optic towed seismic streamer on the seismogram quality |
publisher |
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) |
publishDate |
2022 |
url |
https://doi.org/10.17586/2226-1494-2022-22-2-223-231 https://doaj.org/article/479bd22eed4148b1a85bd4052fc9ae58 |
genre |
Kola Bay |
genre_facet |
Kola Bay |
op_source |
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 22, Iss 2, Pp 223-231 (2022) |
op_relation |
https://ntv.ifmo.ru/file/article/21115.pdf https://doaj.org/toc/2226-1494 https://doaj.org/toc/2500-0373 doi:10.17586/2226-1494-2022-22-2-223-231 2226-1494 2500-0373 https://doaj.org/article/479bd22eed4148b1a85bd4052fc9ae58 |
op_doi |
https://doi.org/10.17586/2226-1494-2022-22-2-223-231 |
container_title |
Scientific and Technical Journal of Information Technologies, Mechanics and Optics |
container_volume |
22 |
container_issue |
2 |
container_start_page |
223 |
op_container_end_page |
231 |
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1766059076769284096 |