在音响定位发展的初期,首先是音响脉冲传播时間的測量以及声学定向的可能性引起人們的注意。近几年中,专业化的方向越来越清楚了。从无数軍用新产品看来,在声学原理导航設备方面,多普勒式仪器的发展是特别值得注意的。多普勒测量可提供一个信息:即速度的測量。除此以外任何别的声学方法都是做不到 At the beginning of the development of the sound localization, the first is the attention of the measurement of acoustic pulse propagation time and the possibility of acoustic orientation. In recent years, the direction of specialization has become clearer and clearer. From the myriad military new products, the development of Doppler instruments is particularly noteworthy with regard to acoustical navigation devices. Doppler measurements provide a message: speed measurement. In addition to any other acoustic methods can not be done