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雷达,对我们每个人来说并不陌生.在电影中,我们看到呼呼旋转的雷达天线,或高踞于军舰之顶,或矗立于群山之巅,十分壮观而引人注目.但是这个发现空中之物的眼睛,探测风云雷电、预报气象的有力工具,在水中却成了“近视眼”.而利用声波传递信息的声纳成了船舶舰艇的水中耳目.什么是声纳“声纳”(SONAR)一词是第二次世界大战期间由声音(SOund)、导航(NAvigation)和测距(Ranging)三个英文字母的字头构成的.当时的声纳系统确实只限于导航和测距的功能.但经过四十多年的发展,今天声纳的定义就大大扩充了.我们应当把声纳理解为“利用水下声波判断海洋中物体的存在、位置及类型的方法和设备”.这就包括了除通讯之外的所有水声的
Radar, which is no stranger to each of us, is spectacular and spectacular in the movie where we see the whirring radar antenna, or the top of a warship, or the summit of the mountains. The discovery of the eyes of the air thing, the detection of lightning storm, a powerful tool for forecasting the weather, has become a “myopia” in the water, while the use of sound waves to transmit information sonar became the eyes and ears of ships and ships what is sonar The term SONAR consisted of the prefixes of the three English alphabets SOUND, NAvigation and Ranging during World War II, when the sonar system was indeed limited to navigation and However, after more than 40 years of development, the definition of sonar today has been greatly expanded.We should interpret sonar as "methods and equipment for using underwater sound waves to determine the existence, location and type of objects in the ocean This includes all underwater sound except communication