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

  • THEORY AND METHODS OF SIGNAL PROCESSING
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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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Authors and 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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  • DOI: https://doi.org/10.1134/S1064226921010046

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