Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. No. 8
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DOI: https://doi.org/10.30898/1684-1719.2021.8.15

UDC: 621.371+537.87

 

Methods of subsurface microwave tomography with application of sensors based on pieces of twin-wire line

 

K. P. Gaikovich 1, A. I. Smirnov 2

 

1 Institute for Physics of Microstructures RAS, GSP-105, Nizhny Novgorod, 603950, Russia

2 Institute of Applied Physics RAS, 46 Ul'yanov Street, Nizhny Novgorod, 603950, Russia

 

The paper was received July 19, 2021

 

Abstract. In this paper, methods of near-field microwave tomography of the subsurface structure of dielectric inhomogeneities are proposed and studied based on the use of resonance probes with pieces of twin-wire lines as sensors. In frameworks of the quasi-static approximation, the integral equation of the inverse problem that relates measured variations of the complex capacity of the resonance system of probes placed above a medium with the inhomogeneous distribution of the complex permittivity. Based on this equation, methods and algorithms of tomography and holography have been proposed and worked out that used data of 2D scanning with variable offset between the sensor wires: (a) with the fixed direction of wires of sensor; (b) in two orthogonally related directions of sensor wires; (c) with the sensor of crossed twin-wire lines. Results of the numerical simulation demonstrate the efficiency of developed algorithms of subsurface tomography and holography.

Key words: near-field microwave subsurface diagnostics, tomography, holography, dielectric inhomogeneities.

References

 

1. Gaikovich K.P. Subsurface near-field scanning tomography. Physical Review Letters. 2007. V.98. №18. P.183902. https://doi.org/10.1103/PhysRevLett.98.183902

2. Gaikovich K.P., Gaikovich P.K. Inverse problem of near-field scattering in multilayer media. 2010. Inverse Problems. 2010. V.26. №12. P.125013.

     https://doi.org/10.1088/0266-5611/26/12/125013

3. Gaikovich K.P., Gaikovich P.K., Maksimovitch Ye.S., Badeev V.A. Pseudopulse near-field subsurface tomography. Physical Review Letters. 2012. V.108. №16. P.163902. https://doi.org/10.1103/PhysRevLett.108.163902

4. Gaikovich K.P., Gaikovich P.K., Maksimovitch Ye.S., Badeev V.A. Subsurface near-field microwave holography. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 2016. V.9. №1. P.74-82. https://doi.org/10.1109/JSTARS.2015.2443035

5. Gaikovich K.P., Gaikovich P.K., Maksimovitch Ye. S., Smirnov A.I., and Sumin M.I. Dual regularization in non-linear inverse scattering problems. Inverse Problems in Science and Engineering. 2016. V.24. №7. P.1215-1239. https://doi.org/10.1080/17415977.2016.1160389

6. Gaikovich K.P., Maksimovitch Ye.S., Sumin M.I. Inverse scattering problems of near-field subsurface pulse diagnostics. Inverse Problems in Science and Engineering. 2018. V.26. №11. P.1590-1611.  https://doi.org/10.1080/17415977.2017.1417405

7. Gaikovich K.P., Smirnov A.I., Yanin D.V. Methods of near-field resonance microwave diagnostics of biology tissues. Zhurnal radioelectroniki [Journal of Radioelectronics] [online]. 2017. №2. http://jre.cplire.ru/jre/feb17/5/text.pdf (In Russian)

 

For citation:

Gaikovich K.P., Smirnov A.I. Methods of subsurface microwave tomography with application of sensors based on pieces of twin-wire line. Zhurnal radioelectroniki [Journal of Radioelectronics] [online]. 2021. №8. https://doi.org/10.30898/1684-1719.2021.8.15 (In Russian)