The Improvement of Marine Traffic Survey Using Radar and The Way of Its Analsis

Abstract

Authors improved the marine traffic survey system using radar and developed an automatic processing system using ARPA (Automatic Radar Plotting Aids) for analysis of marine traffic. These systems provide a hard copy of an image on a radar PPI on real time at an arbitrary time interval and semi-automatically analyze a marine traffic situation. The proposed traffic survey system consists of a color radar, a video printer and modulate and demodulate equipments to record raw radar signals into VTR. The automatic processing system consists of a personal computer and ARPA linked with the survey system. These systems were applied to the marine traffic survey in Akashi channel in order to realize its validity. Then there were much improvement on increasing the accuracy of observed data and significantly reducing working time on the steps of the analysis comparing with the conventional way. The data in a personal computer linked with ARPA make us easy to analyze the marine traffic from various points of view.