Adaptive RF stealth beamforming for frequency diverse array radar

This paper proposes an adaptive radio frequency (RF) stealth beamforming for frequency diverse array (FDA) radar using spoiled frequency increments. Since active radars are highly visible to intercept receivers, traditional high-gain phased-array antenna beam is replaced by a series of low-gain FDA beam with nonlinear frequency increments to reduce the system visibility, and it achieves the same performance as the original high-gain by jointly exploiting the spoiled beams. Equivalently the detection performance is not degraded. Numerical simulation results verify the proposed method.