Recognition using frequency sweep sonar

G. Lindstedt
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引用次数: 4

Abstract

This paper describes the use of arbitrarily chosen transmission signals (e.g. frequency sweeps) in a pulse-echo sonar system. An experimental platform has been built where software generated signals can be loaded into a transmission unit and echoes can be sampled and analyzed by the software. The current experiments utilizes electrostatic transducer elements. The multi-frequency measurement methods in sonar systems gives a much larger statistical material than those using a single frequency. Standing wave phenomena that may result in a zero amplitude at a certain frequency and distance do not deteriorate the measurement since the frequency is varied. Multi-frequency methods can be applied to pure distance measurements as well as to more complicated tasks. An experiment where the system is used for recognition is described.
使用扫频声纳识别
本文描述了在脉冲回波声纳系统中使用任意选择的传输信号(如扫频)。搭建了一个实验平台,将软件产生的信号装入传输单元,利用软件对回波进行采样和分析。目前的实验采用静电换能器元件。声纳系统中的多频测量方法比单频测量方法提供的统计资料要大得多。驻波现象在一定频率和距离上可能导致振幅为零,但由于频率是变化的,因此不会影响测量结果。多频方法既可以用于纯距离测量,也可以用于更复杂的任务。描述了一个将该系统用于识别的实验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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