Construction of the Real-time Sea Hazard Map by Wireless LAN Radiocommunication between Ships

重点研究船舶间的无线局域网无线电通信，实现船舶间相互交换危险信息，构建海上危险地图，保证航行安全。无线电通信的性能目标是在船与船之间3-5公里的距离上实现1mbps以上的吞吐量。考虑到正对的情况，我们对两艘船进行了定向天线的海上试验。我们达到了上述无线电通信的性能目标。最后，通过FTP命令在各船之间交换图像文件，构建海险图。

We focused on wireless LAN radiocomminication between ships exchanging the hazard information each other and constructing the sea hazard map for safety of navigation. The performance target of the radiocommunication was over 1 Mbps throughput at 3-5 km distance between ships. We carried out on-sea trial by sailing two ships using directional antennas considering in head-on situation. We achieved the above performance target of the radiocommunication. Finally, we constructed the sea hazard map exchanging the image files between ships each other by FTP command.