This study aims to discuss a risk assessment of navigation safety for ferries. In this research, the factors (RFs) ferries are first investigated from relevant literature and ferry operational features. A fuzzy AHP (Analytic Hierarchical Process) approach is then proposed weight those RFs, after which continuous risk-matrix model developed determine RFs’ levels. Finally, validate practical appl...

The Automatic Identification System (AIS) tracks vessel movement by means of electronic exchange of navigation data between vessels, with onboard transceiver, terrestrial and/or satellite base stations. The gathered data contains a wealth of information useful for maritime safety, security and efficiency. This paper surveys AIS data sources and relevant aspects of navigation in which such data ...

Loran, is an attractive candidate to provide backup services for GPS because of its complementary area navigation (RNAV), stratum 1 timing, and data channel capabilities. However, for Loran to be accepted as a backup navigation system for aviation, it must meet the integrity, availability, continuity, and accuracy standards for Required Navigation Performance 0.3 (RNP 0.3). The Loran Integrity ...

Operational safety and health monitoring are critical matters for autonomous field mobile robots such as planetary rovers operating on challenging terrain. This paper describes relevant rover safety and health issues and presents an approach to maintaining vehicle safety in a mobility and navigation context. The proposed rover safety module is composed of two distinct components: safe attitude ...

Predicting the safety of urban roads for navigation via global satellite systems (GNSS) signals is considered. To ensure safe driving automated vehicles, vehicle must plan its trajectory to avoid navigating on unsafe (e.g., icy conditions, construction zones, narrow streets, etc.). Such information can be derived from roads' physical properties, vehicle's capabilities, and weather conditions. F...