Achieving subclutter visibility using estimation of clutter intensity and phase shift

This paper presents a new method for detection of a weak, near zero-Doppler signal against a clutter for a pulse-Doppler radar. The proposed detector exploits clutter traits i.e. limited span of an intensity and a phase shift. An estimation of distributions of these parameters allows distinguishing a clutter alone and a useful signal against the clutter. Performed simulations revealed that a significant improvement of the probability of detection is achieved for comparable signal and clutter intensities compared to conventional method of detection.