Forecast of the UHF TV duct over Japan Sea caused by water vapor, yellow sand, etc

2014 Fiscal Year Final Research Report

• Project/Area Number: 23560490
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: System engineering
• Research Institution: Ishikawa National College of Technology
• Principal Investigator: FUKAMI Tetsuo 石川工業高等専門学校, その他部局等, 教授 (60115269)
• Co-Investigator(Kenkyū-buntansha): HIGASHI Ryoichi 石川工業高等専門学校, その他部局等, 准教授 (10435422)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: UHFテレビ / ダクト伝搬 / 日本海上

Outline of Final Research Achievements

A reception disorder of UHF TV broadcastings sometimes occurs in the Japan Sea area. This reception disorder seems to occur by the duct propagation, caused by environmental parameter such as water vapor or the yellow sand over the Japan Sea. The last purpose of this study is to forecast occurrence of the duct propagation. So, we have steadily observed both the side of Japan Sea and Korean TV waves at Tsubata in the Ishikawa prefecture, and compared the weather data with the obtained data. As results, the duct propagation occurs at the fine weather time of summer from spring, but hardly occurs in winter from autumn. And correlation with the weather is very strong.

Free Research Field

電波工学，電子機器