Mathematical modeling of moving FMCW radar: signal at receiver input

O. I. Pavlov; Elena Guseva; Yevhen Yashchyshyn; Teodor Narytnyk; Volodymyr Saiko; Hlib Avdieienko

doi:10.3103/S073527272211005X

Authors

O. I. Pavlov National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0000-0003-1091-3009
Elena Guseva National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0000-0002-6353-6123
Yevhen Yashchyshyn Politechnika Warszawska, Warsaw, Poland https://orcid.org/0000-0001-8378-1399
Teodor Narytnyk Institute of Fundamental Technological Research of the Polish Academy of Sciences, Warsaw, Ukraine https://orcid.org/0009-0008-3152-4356
Volodymyr Saiko Kruty Heroes Military Institute of Telecommunications and Information Technologies, Kyiv, Ukraine https://orcid.org/0000-0002-3059-6787
Hlib Avdieienko National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0000-0002-4788-7273

DOI:

https://doi.org/10.3103/S073527272211005X

Keywords:

mathematical simulation, radar, Doppler effect, terahertz range, modeling of signal at receiver input, frequency modulated continuous wave radar, FMCW radar, linear frequency modulated law, LFM law

Abstract

The paper presents models that allow us to determine the influence of the primary parameters of a moving radar on the features of secondary signals that occur in the receiver when calculating the range of a moving target. This makes it possible to model various signal processing methods, determine the limitations of these methods, and formulate recommendations for the construction and the hardware and software solutions that should be included in the scheme of a moving radar that tracks a moving target.

It has been shown that applying an equilateral triangular LFM law with period 20 µs in a probing signal with carrier frequency 24 GHz and frequency deviation 250 MHz makes it possible to determine the range of a moving target relative to a moving radar. The distance between them is defined uniquely using a coherent processing of received signals. The ideal case of signal propagation has been considered.

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