An Experimental Study of Infrastructure Configuration for Improving AIS Coverage Area

Abstract

In 2002 the International Maritime Organization (IMO) issued Regulation 19 and Annex 17, which requires the Automatic Identification System (AIS) to be installed on every ship with a size of 300 gross tonnages and above. One potential use of AIS as an assistance for anti-collision devices. AIS is not only to be installed on the ship but also can be installed on the shore and act as a base station. Hence, the monitoring of vessel traffic can be done by this base station. Indonesia is an archipelagic country with more than 17,000 islands spread over the country and also known as the second longest coastline in the world at 108,000 km. This paper aims to give some ideas on the establishment of land-based monitoring system infrastructure in Indonesia. Main Base Station (MBS) is used for AIS data storage, AIS data integration and processing in the core while Remote Base Station (RBS) is used for receiving AIS data from ships and then sent to MBS. In general, RBS uses two antenna are omnidirectional and yagi directional, each antenna will connect the AIS receiver. According to this configuration, the coverage of MBS is limited to 100 km into the sea from land. To increase the coverage area, a modification was done by adding several types of antennas and applying into the MBS and RBS integration system. The modification shows that the number of RBS to be installed to cover the same coverage area can be reduced. The MBS and RBS integration are not only covered the Surabaya but also Rembang, Semarang, Cilacap, Cirebon, Jakarta and Cilegon. The result of integration is the total ship each day for almost North Java Island and one place in South Java Island is 507 ship and average ship each day is 240.