指向性アンテナを用いた船間無線LAN通信実験 [in Japanese] Radiocommunication Trial between Ships by Wireless LAN using Directional Antennas [in Japanese]
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Recently, Ship-to-Shore radiocommunication systems, such as the maritime broadband system, give safety and efficiency navigation supports to mariners and operators like the weather routing services. Furthermore radiocommunication system between ships is being developed. Exchanging navigational hazard information between encountered ships, such as appearances of fishing vessels, drift timber and whales, would be beneficial for keeping navigational safety. We have focused on wireless LAN for radiocommunication between ships. In preceding field trial, we used omni-directional antennas and measured a few hundred kbps throughput between ships, which was slower than our target. This time, in order to get faster throughput, we carried out a radiocommunication field trial again and used directional antennas. The trial was done by sailing a ship along the heading line of another ship moored to a pier. We measured RSSI (Received Signal Strength Indication) and throughput between ships at the same time. As a result, we confirmed 2-path model affected by the reflection of the sea surface, but the measured throughput was enough to our expectation.
- The Journal of Japan Institute of Navigation
The Journal of Japan Institute of Navigation 126(0), 283-288, 2012
Japan Institute of Navigation