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Adaptive Cooperative Ship Identification for Coastal Zones Based on the Very High Frequency Data Exchange System
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Adaptive Cooperative Ship Identification for Coastal Zones Based on the Very High Frequency Data Exchange System
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Journal Article
Adaptive Cooperative Ship Identification for Coastal Zones Based on the Very High Frequency Data Exchange System
2024
Overview
The International Telecommunication Union (ITU) proposed the very high frequency data exchange system (VDES) to improve the efficiency of ship–ship and ship–shore communication; however, its existing single-hop transmission mode is insufficient for identifying all ships within a coastal zone. This paper proposes an adaptive cooperative ship identification method based on the VDES using multihop transmission, where the coastal zone is divided into a grid, with the ships acting as nodes, and the optimal sink and relay nodes are calculated for each grid element. An adaptive multipath transmission protocol is then applied to improve the transmission efficiency and stability of the links between the nodes. Simulations were performed utilizing real Automatic Identification System (AIS) data from a coastal zone, and the results showed that the proposed method effectively reduced the time-slot occupancy and collision rate while achieving a 100% identification of ships within 120 nautical miles (nm) of the coast with only 4.8% of the usual communication resources.
Publisher
MDPI AG
Subject
