Adaptive array processing for airborne radar

For airborne wide area surveillance radar, clutter rejection for high subclutter visibility becomes arduous due to several effects, including an increase in clutter backscatter at high grazing angles, clutter spectral spreading due to platform motion, and wide variation in ground clutter returns with changing terrain. The detection performance of an adaptive array radar employing an angle-Doppler joint domain localized-generalized likelihood ratio (JDL-GLR) test is compared to that of a displaced phase center aperture (DPCA) radar. The results presented are for targets in a highly nonhomogeneous clutter and jamming environment where conventional adaptive array processing is not feasible