著者

木村 隆一 鈴木 三郎 大比賀 直樹

出版者

公益社団法人 日本航海学会

雑誌

日本航海学会論文集 (ISSN:03887405)

巻号頁・発行日

vol.79, pp.83-90, 1988

---

Horn-signal is very important for the safety navigation. When horn-signal is generated by other ship, the direction of signal-source is only judged by sense of hearing. This paper describes the system detecting the signal direction automatically. In this system, when horn-signal is received by three microphones placed in different points, time-lags occurs among the times that signal is caught by each microphones. The direction of signal-source is calculated by the time-lags. As a result, when the signal-source is as much as 1,600 meters distant from measurement place, the direction of signal-source is detected within error value of ±5 [deg].