Detection of ship targets near coastline by using Doppler Beam Sharpening technique

If ship targets are near the coastline or islands, it´s very difficult for the conventional anti-ship missile to detect them because the echo signal from the land inside the beam-width and same range resolution with the target can hide the target. As the missile approaches the target, the area and RCS of the land patch gets smaller, so that the conventional anti-ship missile can only detect the target at the very short range. The DBS(Doppler Beam Sharpening) technique is known to have been applied to the anti-ship missile to detect the ship target at the long range by discriminating the target from the land by using the difference of Doppler frequency. In this paper we investigate the principle of DBS technique theoretically and analyze the effectiveness by computer simulation.