Signals Features from Distributed Targets of Autodyne SRR with Simultaneous Pulse Amplitude and Linear Frequency Modulations

Authors

  • V. Ya. Noskov Ural Federal University, Russian Federation
  • K. A. Ignatkov Ural Federal University, Russian Federation
  • A. P. Chupahin Ural Federal University, Russian Federation
  • A. S. Vasiliev O.Ya. Usikov Institute for Radiophysics and Electronics, Ukraine
  • A. V. Fateev O.Ya. Usikov Institute for Radiophysics and Electronics, Ukraine
  • S. M. Smolskiy National Research University "Moscow Power Engineering Institute", Russian Federation

DOI:

https://doi.org/10.20535/RADAP.2017.71.28-35

Keywords:

autodyne, autodyne effect, autodyne signal, radio pulse autodyne, autodyne with frequency modulation, feedback parameter, short-range radar.

Abstract

A mathematical model for signals description of the autodyne short-range radar (ASRR) with the simultaneous pulse amplitude modulation (PAM) and the linear frequency modulation (FM) is considered. The peculiarities of signal formation are described, which are obtained from the radar distributed object in the form of an ensemble of an arbitrary number of point-type reflectors. Signal calculations are carried out by the offered approach of the step method for the case of two point reflectors on the radar object located at various distances from ASRR. The distinctive signal properties formed at reception of the first and further emissions reflected form the radar object are established. After sending of the probe emission, the reception of the first reflected emission from the set of shining points is accompanied by linear signal superposition formation from separate reflectors. The reception of further reflections causes an appearance of combinational signal interaction from separate reflectors. The character and degree of such an interaction is defined by the feedback parameter of ASRR, which depends on the autodyne frequency deviation and delay time of reflected emission. Results of ASRR experimental investigations with simultaneous PAM and the linear FM are obtained using the oscillating module made on the Gunn diode of 8mm-range.

Author Biographies

V. Ya. Noskov, Ural Federal University

Noskov V. Ya., Doc. of Sci (Techn.), Professor of Technologies and Communication Means Departament

K. A. Ignatkov, Ural Federal University

Ignatkov K. A., Cand. of Sci (Tecn.), Assoc. Prof. of Technologies and Communication Means Departament

A. P. Chupahin, Ural Federal University

Chupahin A. P., Postgraduate student of Technologies and Communication Means Departament

A. S. Vasiliev, O.Ya. Usikov Institute for Radiophysics and Electronics

Vasiliev A. V., Scientific researcher

A. V. Fateev, O.Ya. Usikov Institute for Radiophysics and Electronics

Fateev O. V., Scientific researcher

S. M. Smolskiy, National Research University "Moscow Power Engineering Institute"

Smolskiy S. M., Doc. of Sci (Tech), Professor of Departament of Radio Signals Formation and Processing

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Published

2017-12-30

Issue

71

Section

Telecommunication, navigation and radar systems, electroacoustics

License

Copyright (c) 2020 V. Ya. Noskov, K. A. Ignatkov, A. P. Chupahin, A. S. Vasiliev, A. V. Fateev, S. M. Smolskiy

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