Clutter removal improvement of marine radar for weather observation

Abstract

Clutter removal of marine radar for weather observation depends on the quality and consistency of clutter map. the clutter removal often become difficult since echoes from hard targets are much stronger than the rain reflection. There is also constraint due to different azimuth angle of each scan line in every scanner rotation resulting inconsistent map of clutter. The effort to obtain consistent clutter map to easily distinguish the rain echoes depends on the method of signal pre-processing and pulse integration. Oversampling factor influences the target detection result as higher value enable the radar to see large object more detail. The type of LPF determines the clarity of the radar image, thus better clutter map. While the pulse integration improves probability of detection and produces better clutter removal when the radar is applied for rain observation since it can provide much stable static clutter map.