The Design and Development of AIS System Based on ECDIS

Automatic Identification System (AIS) has a powerful information processing function. How to real-time and efficiently parse and reuse all kinds of AIS message and how to directly and completely display all AIS information are key to promote AIS information using efficiency and fully exerting function of AIS aid-to-navigation. Therefore, an AIS system based on Electronic Chart Display and Information System (ECDIS) is designed, and the structure and function modules of the system are designed according to the users' demands, which are related to international standards. A double-deck interactive information system is proposed by using AIS as a lower computer and using ECDIS as an upper computer. According to the characteristics of AIS message and the particularity of displaying ECDIS, four key techniques of the system are summarized: AIS message information decoding technique, ECDIS display technique, AIS information processing and database technique, AIS and ECDIS superposition technique. Every key technique is discussed in detail and the realization way and special steps are given. The test and the project show that the system has good practical applicability and broad application prospects.