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Fluctuation characteristics of autodyne radars with frequency modulation

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Abstract

A mathematical model of the autodyne radar with frequency modulation has been developed. The model is presented in the form of a self-excited oscillator with single-loop oscillating system adjusted in terms of frequency by varying the varicap capacitance. This model takes into account the impact of intrinsic radiation reflected from the object of location and inherent noises of the generator, as well as the power source noises. Basic expressions were derived for the calculation of the signal accompanying the spurious response of generator, components of the legitimate signal and the noise during the registration of autodyne response both in the power supply circuit and in terms of the variation of oscillation amplitude. Calculations of noise characteristics were carried out at small and large values of the feedback parameter. The phenomenon of periodic nonstationarity of noise levels at the autodyne generator output was detected in conditions of strong feedback. The results of calculations and experiments were obtained for the autodyne built on an 8 mm-band Gunn diode.

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References

  1. S. A. Alidoost, R. Sadeghzade, R. Fatemi, “Autodyne system with a single antenna,” Proc. of 11th Int. Radar Symp., IRS–2010, 16–18 Jun. 2010, Lithuania, Vilnius (IEEE, 2010), Vol. 2, pp. 406–409, http://ieeexplore. ieee.org/document/5547497/.

    Google Scholar 

  2. S. Kim, B.-H. Kim, J.-G. Yook, G.-H. Yun, “Proximity vital sign sensor using self-oscillating mixer,” Proc. of URSI Asia-Pacific Radio Science Conf., URSI AP-RASC, 21-25 Aug. 2016 (IEEE, 2016), pp. 1446–1448, DOI: 10.1109/URSIAP-RASC.2016.7601402.

    Google Scholar 

  3. V. Ya. Noskov, K. A. Ignatkov, A. P. Chupakhin, “Application of two-diode autodynes in devices for radiowave control of product dimensions,” Meas. Tech. 59, No. 7, 715 (2016), DOI: 10.1007/s11018-016-1035-9.

    Article  Google Scholar 

  4. G. P. Ermak, I. V. Popov, A. S. Vasilev, A. V. Varavin, V. Ya. Noskov, K. A. Ignatkov, “Radar sensors for hump yard and rail crossing applications,” Telecom. Radio Eng. 71, No. 6, 567 (2012), DOI: 10.1615/TelecomRadEng. v71.i6.80.

    Article  Google Scholar 

  5. V. Ya. Noskov, A. V. Varavin, A. S. Vasiliev, G. P. Ermak, N. M. Zakarlyuk, K. A. Ignatkov, S. M. Smolskiy, “Modern hybrid-integrated autodyne oscillators of microwave and millimeter wave ranges and their application. Part 9. Autodyne radar applications,” Uspekhi Sovremennoi Radioelektroniki. Zarubezhnaya Radioelektronika, No. 3, 32 (2016), http://www.radiotec.ru/catalog.php?cat=jr4&art=17683.

    Google Scholar 

  6. I. V. Komarov, S. M. Smolskiy, Fundamentals of Short-Range FM Radar (Artech House, Norwood, 2003), DOI: 10.1109/MAES.2004.1346903.

    Google Scholar 

  7. S. D. Votoropin, V. Ya. Noskov, S. M. Smolskiy, “An analysis of the autodyne effect of oscillators with linear frequency modulation,” Russ. Phys. J. 51, No. 6, 610 (2008), DOI: 10.1007/s11182-008-9083-5.

    Article  MATH  Google Scholar 

  8. V. Ya. Noskov, K. A. Ignatkov, A. P. Chupakhin, A. S. Vasiliev, G. P. Ermak, S. M. Smolskiy, “Peculiarities of signal formation of the autodyne short-range radar with linear frequency modulation,” Visn. NTUU KPI, Ser. Radioteh. Radioaparatobuduv., No. 67, 50 (2016), http://radap.kpi.ua/en/radiotechnique/article/view/1366.

    Google Scholar 

  9. V. Ya. Noskov, K. A. Ignatkov, “Peculiarities of noise characteristics of autodynes under strong external feedback,” Russ. Phys. J. 56, No. 12, 1445 (2013), DOI: 10.1007/s11182-014-0198-6.

    Article  Google Scholar 

  10. V. Ya. Noskov, G. P. Ermak, “Signal and fluctuation characteristics of autodyne vibration and displacement meters,” Telecom. Radio Eng. 73, No. 19, 1727 (2014), DOI: 10.1615/ TelecomRadEng.v73.i19.30.

    Article  Google Scholar 

  11. V. Ya. Noskov, K. A. Ignatkov, “About applicability of quasi-static method of autodyne systems analysis,” Radioelectron. Commun. Syst. 57, No. 3, 139 (2014), DOI: 10.3103/S0735272714030054.

    Article  Google Scholar 

  12. V. Ya. Noskov, K. A. Ignatkov, “Autodyne signals in case of random delay time of the reflected radiation,” Telecom. Radio Eng. 72, No. 16, 1521 (2013), DOI: 10.1615/TelecomRadEng.v72.i16.70.

    Article  MATH  Google Scholar 

  13. A. V. Varavin, A. S. Vasiliev, G. P. Yermak, I. V. Popov, “Autodyne Gunn-diode transceiver with internal signal detection for short-range linear FM radar sensor,” Telecom. Radio Eng. 69, No. 5, 451 (2010), DOI: 10.1615/TelecomRadEng.v69.i5.80.

    Article  Google Scholar 

  14. V. Ya. Noskov, K. A. Ignatkov, “Noise characteristics of autodynes with frequency stabilization by means of an external high-Q cavity,” J. Commun. Technol. Electron. 61, No. 9, 1052 (2016), DOI: 10.1134/S1064226916090102.

    Article  Google Scholar 

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Authors and Affiliations

  1. Ural Federal University, Yekaterinburg, Russia

    V. Ya. Noskov, K. A. Ignatkov & A. P. Chupakhin

  2. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine

    A. S. Vasilev & Gennadiy P. Ermak

Authors
  1. V. Ya. Noskov
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  2. A. S. Vasilev
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  3. Gennadiy P. Ermak
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  4. K. A. Ignatkov
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  5. A. P. Chupakhin
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Corresponding author

Correspondence to V. Ya. Noskov.

Additional information

Original Russian Text © V.Ya. Noskov, A.S. Vasilev, Gennadiy P. Ermak, K.A. Ignatkov, A.P. Chupakhin, 2017, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Radioelektronika, 2017, Vol. 60, No. 3, pp. 154–165.

This study was carried out in accordance with the Agreement on scientific and technical cooperation between UrFU University and IRE Institute of NASU and with financial support of the Russian Government, Resolution No. 211, Contract No. 02.A03.21.0006.

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Noskov, V.Y., Vasilev, A.S., Ermak, G.P. et al. Fluctuation characteristics of autodyne radars with frequency modulation. Radioelectron.Commun.Syst. 60, 123–131 (2017). https://doi.org/10.3103/S0735272717030049

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  • DOI: https://doi.org/10.3103/S0735272717030049

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