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Methods of ultrashort pulse identification of parameters of material media by the configuration of non-stationary fields in radio vision

 

M. S. Kostin, P. V. Sevryugin, I. A. Steshin

MIREA - Russian Technological University, prospekt Vernadskogo, 78, Moscow 119454, Russia

 

The paper is received on July 9, 2019

 

Abstract. The radiophysical features of the application of ultrashort pulses of non-stationary configuration in solving radio problems of radio wave identification of parameters of material media are considered. The main reference identifiers have been identified that allow the analysis of radio images of equivalent medium inhomogeneities with subnanosecond resolution using signature decomposition and self-resonant scattering of equivalent inhomogeneities. Numerical methods for recognizing radio responses and synthesizing radio repeats by given impulse characteristics: adaptive damping impulse, genetic and pole functions are proposed. It was found that the transfer function of the irradiated in homogeneities of the medium contains two components: stimulated – dependent on such parameters of the exciting ultrashort pulse (USP) as polarization, field distribution profile, direction of propagation, etc., and the mode itself – USP scattering (independent of wave parameters USP - own complex resonant frequency scattering). A resonance model of the scattering of an USP of an irradiated medium, based on the singular decomposition method on the pole plane, is proposed. The results of numerical simulation of the radio-wave identification of an object based on a given equivalent inhomogeneity and the instantaneous radiophysical state of the gyromagnetic medium are presented.

Key words: radio wave identification, ultrashort pulse, non-stationary field, genetic function, pole function, quenching pulse, equivalent inhomogeneity, material medium, radiovision.

References

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For citation:

M. S. Kostin, P. V. Sevryugin, I. A. Steshin. Methods of ultrashort pulse identification of parameters of material media by the configuration of non-stationary fields in radio vision. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 7. Available at http://jre.cplire.ru/jre/jul19/5/text.pdf

DOI  10.30898/1684-1719.2019.7.5