해상 선박용 초단파 디지털 트랜시버 구현에 관한 연구

Abstract

A new VHF band for use in VHF Data Exchange System(VDES) is determined by WRC-12 due to the overload of AIS VDL, and the system characteristics of the VDES is recommended as ITU-R M. 1842-1. Also a multiple access method of CS-TDMA and higher speed digital modulation are recommended for the VDES. Nowadays, many navigation and communication equipments are working on ships. Among them, VDES is defined as a wireless communication network between ship to ship and ship to shore ,which provides unceasing communication channel between ship to shore. For this reason, it has been expected to trigger various services and applications based on VDES. However, there are not specific technologies and developed products. In this thesis, a implementation of VHF digital transceiver is performed and the performance of the implemented system is verified by measurement equipment. This technology will serve to provide various services in e-Navigation. Also, this thesis gives an insight into why this technology is necessary to design the VDES. This concept will eventually help system designers to plan the VHF digital equipment design.