Stduy on CFAR in GMTI for airborne fire-control radar

One kind of CFAR named VI-CA/OS-CFAR and based on variable test statistics is proposed in this paper. By calculating two variable test statistics including normalized square deviation and mean ratio real-timely, current clutter environment is judged automatically and different kinds of CFAR detectors are selected. Theoretical analysis and verification results by flight data shows that this detector has good performance and robustness in homogeneous clutter, multiple jamming targets or clutter edge environment faced by GMTI in actual use.