一、概述水下声波显象装置是一种有发展前途的水下观察和监视仪器,它通过超声波传递情报信息,能直接显示出较清晰的水下目标图象。在进行海底地貌调查、海中生物考察、水下打捞回收、海下工程作业中,都需要有直接观测和显示水下目标的仪器装置。而且,这种仪器装置性能的优劣,关系到上述水下作业的效果。随着海洋开发事业的发展,各种深海作业正日益增多和复杂,对远距离、高分辨率的水下探测仪器的需要也就更加迫切。目前,所使用的水下探测仪器有光学观测装置和声学探测装置两大类。但是,这两类仪器在海洋考察和海洋工程中用于显示水下目标的图象都是不够理想的。光学观测装置包括水下电视摄象机、水下照相机和水下电影摄影机等。它们的观测距离 First, an overview Underwater acoustic imaging device is a promising underwater observation and monitoring instruments, which transmit information by ultrasound intelligence, can directly display a clear image of the underwater target. In the survey of the seabed geomorphology, in the sea biological investigation, underwater salvage recovery, underwater engineering operations, there is a need for direct observation and display of underwater instrumentation devices. Moreover, the merits of this instrument device performance, related to the above underwater effect. With the development of marine development, a variety of deep-sea operations are increasingly and complicatedly needed, and the need for long-range and high-resolution underwater detection instruments is even more pressing. At present, the underwater detection instruments used are optical observation devices and acoustic detection devices in two broad categories. However, these two types of instruments are not ideal for displaying images of underwater targets in marine investigations and marine engineering. Optical observation devices include underwater video cameras, underwater cameras and underwater movie cameras. Their observation distance