Journal of Systems Engineering and Electronics ›› 2014, Vol. 25 ›› Issue (4): 580-.doi: 10.1109/JSEE.2014.00068

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Switching variability index based multiple strategy CFAR detector

Yang Li1,2,*, Zhenyuan Ji1, Bingfei Li3, and Gil Alterovitz2   

  1. 1. Department of Electronic Engineering, Harbin Institute of Technology, Harbin 150001, China;
    2. Center for Biomedical Informatics, Harvard University, Boston MA 02115, USA;
    3. Chinese Aeronautical Radio Electronics Research Institute, Shanghai 200233, China
  • Online:2014-08-22 Published:2010-01-03


A switching variability index (SVI) constant false alarm rate (CFAR) detector is proposed for improving the detection performance of VI-CFAR detectors in multiple targets backgrounds. When the presence of non-homogeneity in CFAR reference windows is indicated by a VI-CFAR detector, a switching-CFAR detector is introduced to optimize the performance of the VI-CFAR detector in homogeneous, multiple targets and clutter edge backgrounds. The structure and parameters selection method of the SVI-CFAR detector is presented. Comparisons with classic CFAR detectors and recently proposed detectors are also given. Theoretical analysis and simulation results show that SVICFAR detector maintains the good performance of the VI-CFAR detector in homogeneous and clutter edge backgrounds, while greatly improving the capacity of anti-multi targets.