Fuzzy CFAR Detectors for MIMO Radars in Homogeneous and Non-Homogeneous Pareto Clutter

Journal of Communications Technology and Electronics volume 66, pages62–69(2021)Cite this article

Abstract

In this paper, we propose to use fuzzy fusion rules to improve the performances of the CA-CFAR and OS-CFAR detectors for non-coherent MIMO radars in homogenous and non-homogenous Pareto background. First, the membership function for each individual detector is computed. At the fusion center, the membership functions are combined using four fuzzy fusion rules, namely; the “MIN”, “MAX”, “algebraic product” and the “algebraic sum” to yield a binary decision after defuzzification. The obtained results show that for a number of nodes equal to four, the performance is the best for a high number of receivers. In homogeneous background, the “algebraic product” fusion rule gives the best result when SCR > 4 dB whereas the “algebraic sum” is the best when SCR < 4 dB for the CA-CFAR. For the OS-CFAR, it is clearly shown that the “algebraic product” is the best. In non-homogenous case, the “algebraic sum” fusion rule gives the best results for the CA-CFAR, and the “algebraic product” for the OS-CFAR.

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Affiliations

  1. Laboratoire Signaux et Systèmes de Communication, Université de Constantine, 25000, Constantine, Algérie

    F. Khaldi, F. Soltani & M. Baadeche

  2. Département d’Electronique, Université de Constantine, 25000, Constantine, Algérie

    F. Soltani

Authors
  1. F. Khaldi
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  2. F. Soltani
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  3. M. Baadeche
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Correspondence to F. Soltani.

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Khaldi, F., Soltani, F. & Baadeche, M. Fuzzy CFAR Detectors for MIMO Radars in Homogeneous and Non-Homogeneous Pareto Clutter. J. Commun. Technol. Electron. 66, 62–69 (2021). https://doi.org/10.1134/S1064226921010046

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Keywords:

  • MIMO Radars
  • Fuzzy rules
  • non-homogeneous clutter
  • CFAR detection