Adap tive Clutter Cancellation for Element-Digitised Airborne Radar

We describe a multi-layer adaptive beamforming method, for a large element-digitised array radar (EDAR). Range-dependent gain adaption (RDGA) at each array element offers egective cancellation of clutter. Simulations of airborne intercept (AI) radar demonstrate the power of this approach and illustrate its robustness to random phase and amplitude errors in the array.