Some Analysis of Fuzzy CAGO/SO CFAR Detector in Non-Gaussian Background

In order to improve radar's detection performance under non-Gaussian background clutter. We design a new distributed fuzzy CAGO/SO-CFAR detection system including two sensors. Both sensors compute the value of the membership function mapping to the false alarm space according to the samples of the reference cells, in the fusion centre two values are combined according to four kinds of fusion rule to estimate the background clutter power. The simulation results prove the detection improvement of CASO based on algebraic-sum rule under multi-target environment, and present better false-alarm-control capacity of CAGO based on MIN rule under clutter-edge environment.

[1]  H. M. Finn,et al.  Adaptive detection mode with threshold control as a function of spatially sampled clutter level estimates , 1968 .

[2]  J. W. Minett,et al.  A fuzzy approach to signal integration , 2002 .

[3]  R. D. Pierce.  Application of the positive alpha-stable distribution , 1997, Proceedings of the IEEE Signal Processing Workshop on Higher-Order Statistics.

[4]  Faouzi Soltani,et al.  Performance analysis of some CFAR detectors in homogeneous and non-homogeneous Pearson-distributed clutter , 2006, Signal Process..

[5]  Hermann Rohling,et al.  Radar CFAR Thresholding in Clutter and Multiple Target Situations , 1983, IEEE Transactions on Aerospace and Electronic Systems.

[6]  John G. Proakis,et al.  Probability, random variables and stochastic processes , 1985, IEEE Trans. Acoust. Speech Signal Process..

[7]  Saralees Nadarajah.  Comments on "Performance analysis of some CFAR detectors in homogeneous and non-homogeneous Pearson-distributed clutter" , 2007, Signal Process..

[8]  A. Zaimbashi,et al.  Binary and fuzzy distributed CFAR detectors , 2008, 2008 European Radar Conference.

[9]  Chrysostomos L. Nikias,et al.  Performance assessment of CFAR processors in Pearson-distributed clutter , 2000, IEEE Trans. Aerosp. Electron. Syst..

[10]  James W. Minett,et al.  The use of fuzzy spaces in signal detection , 2000, Fuzzy Sets Syst..

[11]  V. G. Hansen,et al.  Constant false alarm rate processing in search radars , 1973 .

[12]  G. Trunk.  Range Resolution of Targets Using Automatic Detectors , 1978, IEEE Transactions on Aerospace and Electronic Systems.

[13]  Zoubeida Messali,et al.  Performance of Distributed CFAR Processors in Pearson Distributed Clutter , 2007, EURASIP J. Adv. Signal Process..

[14]  F. Soltani,et al.  Distributed CA-CFAR and OS-CFAR detection using fuzzy spaces and fuzzy fusion rules , 2004 .