Extended search
Peculiarities of correlation processing of pseudonoise signals in electrical prospecting equipment
Research Station of the Russian Academy of Sciences, Bishkek, Kyrgyz Republic
Journal: Geophysical research
Tome: 23
Number: 2
Year: 2022
Pages: 39-54
UDK: 550.380.83 / 004.42 / 004.021
DOI: 10.21455/gr2022.2-3
Show citation
Bobrovsky V.V. Peculiarities of correlation processing of pseudonoise signals in electrical prospecting equipment // . 2022. Т. 23. № 2. С. 39-54. DOI: 10.21455/gr2022.2-3
@article{BobrovskyPeculiarities2022,
author = "Bobrovsky, V. V.",
title = "Peculiarities of correlation processing of pseudonoise signals in electrical prospecting equipment",
journal = "Geophysical research",
year = 2022,
volume = "23",
number = "2",
pages = "39-54",
doi = "10.21455/gr2022.2-3",
language = "English"
}
Copy link
Copy BibTex
Keywords: geoelectrical exploration, pseudonoise signals, correlation processing of signals, structural disturbances
Аnnotation: The paper presents an algorithm for eliminating structural disturbances arising on the transient response curve in the process of correlation processing of the registered pseudonoise signals. The algorithm is based on the detection and selection of impulse signals of structural disturbances against the background of smoothly (slowly) varying transient. The energy of detected impulse signals of structural disturbances exceeds the optimal detection threshold calculated from the transient response curve. This method provided reliable, with a high probability of correct detection and a low probability of a false alarm, detection and further elimination on the resulting transient response curve of structural disturbances. A criterion for automatic calculation of the optimal threshold for detecting structural disturbances is proposed, based on the maximum approximation to the normal distribution law of the disturbances and noises remaining on the transient response curve after removing structural disturbances from it. The choice and determination of the optimal detection threshold is carried out in the process of sequential enumeration of its values (from maximum to minimum) with a set step that determines the accuracy of determining the threshold. The procedure for finding the detection threshold is reduced to finding the maximum value of the Pearson correlation coefficient calculated at each step between the probability density distribution functions and the calculated normal distribution law of the amplitudes of noises and disturbances remaining on the transient response curve after removing the structural disturbances. This made it possible to automate the data processing process to the maximum and increase its speed, which is very important when performing work in the field. The algorithm was worked out on transient signals, obtained at the experimental point “Chunkurchak”, during the field work with an electrical prospecting measuring complex with pseudonoise signals. The application of the algorithm made it possible to significantly (approximately by 450 times) improve the signal-to-noise ratio on the transient response curve in the region of large times.
Bibliography: Aleksanova E.D., Bobachev A.A., Bol’shakov D.K., Gorbunov A.A., Ivanova S.V., Kulikov V.A., Modin I.N., Pushkarev P.Yu., Khmelevskoi V.K., Shustov N.L., Yakovlev A.G., Elektrorazvedka: Posobie po elektrorazvedochnoi praktike dlya studentov geofizicheskikh spetsial’nostei (Electrical Prospecting: A Guide to Electrical Exploration Practice for Students of Geophysical Specialties), Moscow: GERS, 2005, pp. 240, 251-253. [In Russian].
Bénéteau C., Centner R., A survey of optimal polynomial approximants, applications to digital filter design, and related open problems, Complex Analysis and its Synergies, 2021, no. 7, pp. 1-26.
Bobrovskii V.V., Il'ichev P.V., Mathematical modeling of alleged sources (causes) of “structural interference” in geoelectrical prospecting equipment with pseudonoise sounding signals, in Problemy geodinamiki i geoekologii vnutrikontinental’nykh orogenov: Materialy dokl. VII Mezhdunar. simpoziuma, g. Bishkek, 19–24 iyunya 2017 g. (Problems of Geodynamics and Geoecology of Inland Orogens: Proc. VII Int. Symposium), Bishkek: NS RAN, 2018, pp. 360-370. [In Russian].
Bobrovskii V.V., Il'ichev P.V., Software for processing data of registration and modeling of an electrical prospecting complex with pseudonoise signals, Vestnik KRSU (Vestnik KRSU), 2019, vol. 19, no. 12, pp. 77-83. [In Russian].
Bobrovskii V.V., Il'ichev P.V., Lashin O.A., Broadband Measuring Complex with Pseudonoise Signals for Electromagnetic Monitoring of Modern Geodynamic Processes in Seismically Active Zones, Seismic Instruments, 2021, vol. 57, no. 4. pp. 384-396. DOI: 10.3103/S0747923921040034
Dikusar N.D., Higher-order polynomial approximation, Mathematical Models and Computer Simulations, 2016, vol. 8, pp. 183-200. DOI: 10.1134/S2070048216020058
Duncan P.M., Bailey R.C., Edwards R.N., Garland G.D., Ywang A., The development and applications of a wide band electromagnetic sounding system using pseudo-noise source, Geophysics, 1980, vol. 45, no. 8, pp. 1276-1296.
Groisman F.E., Trapeznikov Yu.A., Apparaturnye razrabotki dlya geofizicheskikh issledovanii elektromagnitnymi metodami (Hardware Advances for Geophysical Research by Electromagnetic Methods), Moscow: IFZ AN SSSR, 1986, pp. 86-98. [In Russian].
Gutnikov V.S., Fil'tratsiya izmeritel'nykh signalov (Filtration of measuring signals), Leningrad: Energoatomizdat, Leningrad. department, 1990, 193 p. [In Russian].
Il'ichev P.V., Technological aspects of using pseudonoise signals in active geoelectrical prospecting systems, mathematical modeling, in Sovremennye problemy geodinamiki i geoekologii vnutrikontinental’nykh orogenov: Materialy 5-go Mezhdunarodnogo simpoziuma, g. Bishkek, 19–24 iyunya 2011 g. (Current Problems of Geodynamics and Geoecology of Inland Orogens: Proc. 5th International Symposium, Bishkek, June 19–24, 2011), Bishkek: NS RAN, 2012, vol. 2, pp. 165-178. [In Russian].
Ilyichev P.V., Bobrovsky V.V., Application of pseudonoise signals in systems of active geoelectric exploration (Results of mathematical simulation and field experiments), Seismic Instruments, 2015, vol. 51, no. 1, pp. 53-64. DOI: 10.3103/S0747923915010089
Il'ichev P.V., Bobrovskii V.V., Variations in the level of nonlinear distortions of electrical signals in the Earth’s crust as a controlled parameter of geophysical monitoring, Vestnik KRSU (Vestnik KRSU), 2018, vol. 18, no. 12, pp. 108-112. [In Russian].
Il'ichev P.V., Bragin V.D., Shchelochkov G.G., Bobrovskii V.V., Myasnikov D.S., Zakupina G.S., System of active electromagnetic monitoring of seismically active zones of the earth's crust, RF Patent 2408037 kl. G01V3/08, 2010.
Il'ichev P.V., Aladiev A.V., Bogomolov L.M., Bobrovskii V.V., Zakupin A.S., Sychev V.N., Parameters of acoustic emission signals initiated by electric impact on loaded samples, in Geodinamika i geoekologicheskie problemy vysokogornykh regionov: Sbornik materialov Vtorogo mezhdunarodnogo simpoziuma, Bishkek, 29 oktyabrya – 3 noyabrya 2002 g. (Geodynamics and geoecological problems of high mountain regions: Collection of materials of the Second International Symposium, Bishkek, October 29 – November 3, 2002), Bishkek: OIVTAN, 2003, pp. 286-303. [In Russian].
Markochev V.M., The approximation of experimental dependences describing the abrupt change of condition of object of research, Matematicheskoe modelirovanie (Mathematical modeling), 2018, vol. 30, no. 4, pp. 73-83. [In Russian].
Rababah A., High order approximation of degree nine and order eighteen, Journal of Inequalities and Applications, 2019, vol. 2019, pp. 1-10. DOI: 10.1186/s13660-019-2103-x
Shumilov B.M., Multiwavelets of the third degree Hermitian splines, orthogonal to cubic polynomials, Mathematical Models and Computer Simulations, 2013, vol. 5, pp. 511-519.
Svetov B.S., Alekseev D.A., Ageev V.V., Karinskiy S.D., Yakovlev A.G., Field establishment probe with noise-like signals, Geofizika (Geophysics), 2012, no. 1, pp. 52-60. [In Russian].
Trapeznikov Yu.A., Bragin V.D., Il’ichev P.V., Orlenko N.N., Ivanov E.I., Matiks A.I., Konovalov S.M., Geophysical system for collecting and processing information, RF Patent 2091820, kl. G01V3/08, 1997.
Velikin A.B., Electrical prospecting method and device for its implementation, RF Patent No. 2354999, 2009.
Velikin A.B., Velikin A.A., A new correlation transient electromagnetic method with noise-like signals (CTEM) for earth electromagnetic sounding in oil and gas, Voprosy yestestvoznaniya (Questions of natural science), 2016, no. 1, pp. 103-115. [In Russian].
Bénéteau C., Centner R., A survey of optimal polynomial approximants, applications to digital filter design, and related open problems, Complex Analysis and its Synergies, 2021, no. 7, pp. 1-26.
Bobrovskii V.V., Il'ichev P.V., Mathematical modeling of alleged sources (causes) of “structural interference” in geoelectrical prospecting equipment with pseudonoise sounding signals, in Problemy geodinamiki i geoekologii vnutrikontinental’nykh orogenov: Materialy dokl. VII Mezhdunar. simpoziuma, g. Bishkek, 19–24 iyunya 2017 g. (Problems of Geodynamics and Geoecology of Inland Orogens: Proc. VII Int. Symposium), Bishkek: NS RAN, 2018, pp. 360-370. [In Russian].
Bobrovskii V.V., Il'ichev P.V., Software for processing data of registration and modeling of an electrical prospecting complex with pseudonoise signals, Vestnik KRSU (Vestnik KRSU), 2019, vol. 19, no. 12, pp. 77-83. [In Russian].
Bobrovskii V.V., Il'ichev P.V., Lashin O.A., Broadband Measuring Complex with Pseudonoise Signals for Electromagnetic Monitoring of Modern Geodynamic Processes in Seismically Active Zones, Seismic Instruments, 2021, vol. 57, no. 4. pp. 384-396. DOI: 10.3103/S0747923921040034
Dikusar N.D., Higher-order polynomial approximation, Mathematical Models and Computer Simulations, 2016, vol. 8, pp. 183-200. DOI: 10.1134/S2070048216020058
Duncan P.M., Bailey R.C., Edwards R.N., Garland G.D., Ywang A., The development and applications of a wide band electromagnetic sounding system using pseudo-noise source, Geophysics, 1980, vol. 45, no. 8, pp. 1276-1296.
Groisman F.E., Trapeznikov Yu.A., Apparaturnye razrabotki dlya geofizicheskikh issledovanii elektromagnitnymi metodami (Hardware Advances for Geophysical Research by Electromagnetic Methods), Moscow: IFZ AN SSSR, 1986, pp. 86-98. [In Russian].
Gutnikov V.S., Fil'tratsiya izmeritel'nykh signalov (Filtration of measuring signals), Leningrad: Energoatomizdat, Leningrad. department, 1990, 193 p. [In Russian].
Il'ichev P.V., Technological aspects of using pseudonoise signals in active geoelectrical prospecting systems, mathematical modeling, in Sovremennye problemy geodinamiki i geoekologii vnutrikontinental’nykh orogenov: Materialy 5-go Mezhdunarodnogo simpoziuma, g. Bishkek, 19–24 iyunya 2011 g. (Current Problems of Geodynamics and Geoecology of Inland Orogens: Proc. 5th International Symposium, Bishkek, June 19–24, 2011), Bishkek: NS RAN, 2012, vol. 2, pp. 165-178. [In Russian].
Ilyichev P.V., Bobrovsky V.V., Application of pseudonoise signals in systems of active geoelectric exploration (Results of mathematical simulation and field experiments), Seismic Instruments, 2015, vol. 51, no. 1, pp. 53-64. DOI: 10.3103/S0747923915010089
Il'ichev P.V., Bobrovskii V.V., Variations in the level of nonlinear distortions of electrical signals in the Earth’s crust as a controlled parameter of geophysical monitoring, Vestnik KRSU (Vestnik KRSU), 2018, vol. 18, no. 12, pp. 108-112. [In Russian].
Il'ichev P.V., Bragin V.D., Shchelochkov G.G., Bobrovskii V.V., Myasnikov D.S., Zakupina G.S., System of active electromagnetic monitoring of seismically active zones of the earth's crust, RF Patent 2408037 kl. G01V3/08, 2010.
Il'ichev P.V., Aladiev A.V., Bogomolov L.M., Bobrovskii V.V., Zakupin A.S., Sychev V.N., Parameters of acoustic emission signals initiated by electric impact on loaded samples, in Geodinamika i geoekologicheskie problemy vysokogornykh regionov: Sbornik materialov Vtorogo mezhdunarodnogo simpoziuma, Bishkek, 29 oktyabrya – 3 noyabrya 2002 g. (Geodynamics and geoecological problems of high mountain regions: Collection of materials of the Second International Symposium, Bishkek, October 29 – November 3, 2002), Bishkek: OIVTAN, 2003, pp. 286-303. [In Russian].
Markochev V.M., The approximation of experimental dependences describing the abrupt change of condition of object of research, Matematicheskoe modelirovanie (Mathematical modeling), 2018, vol. 30, no. 4, pp. 73-83. [In Russian].
Rababah A., High order approximation of degree nine and order eighteen, Journal of Inequalities and Applications, 2019, vol. 2019, pp. 1-10. DOI: 10.1186/s13660-019-2103-x
Shumilov B.M., Multiwavelets of the third degree Hermitian splines, orthogonal to cubic polynomials, Mathematical Models and Computer Simulations, 2013, vol. 5, pp. 511-519.
Svetov B.S., Alekseev D.A., Ageev V.V., Karinskiy S.D., Yakovlev A.G., Field establishment probe with noise-like signals, Geofizika (Geophysics), 2012, no. 1, pp. 52-60. [In Russian].
Trapeznikov Yu.A., Bragin V.D., Il’ichev P.V., Orlenko N.N., Ivanov E.I., Matiks A.I., Konovalov S.M., Geophysical system for collecting and processing information, RF Patent 2091820, kl. G01V3/08, 1997.
Velikin A.B., Electrical prospecting method and device for its implementation, RF Patent No. 2354999, 2009.
Velikin A.B., Velikin A.A., A new correlation transient electromagnetic method with noise-like signals (CTEM) for earth electromagnetic sounding in oil and gas, Voprosy yestestvoznaniya (Questions of natural science), 2016, no. 1, pp. 103-115. [In Russian].
