Sea Spikes Suppression for high range and high Doppler resolution radars

High resolution in range and Doppler are recommended to border surveillance X-band radars for the detection of small RCS ground targets in a severe clutter environment. This kind of radars can also be employed for sea border control. However, in this case the radar processor should suppress the sea spike echoes that can be otherwise mistaken with small boats. In this paper a solution for mitigating the problem connected with sea spikes is proposed. A 2D CFAR that uses the information from both the range and Doppler characteristics of the echoes is presented. The performance of this algorithm is compared with the one of a classical CFAR which can instead be efficiently employed in a ground environment.