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Signal design for underwater acoustic positioning systems based on orthogonal waveforms

机译：基于正交波形的水下声学定位系统信号设计

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摘要

Autonomous underwater vehicles (AUVs) or remotely operated vehicles (ROVs) are commonly used in deep water industries. Because the sound wave is the most effective carrier for transmitting information underwater, underwater acoustic positioning systems (UAPSs) are regarded as essential positioning and navigation components of AUVs or ROVs. Multi-target positioning is the most important emergent trend being explored for current UAPSs, within which signal design is a major issue. The designed waveforms determine the detection performance, user number, and system complexity of the UAPS. Conventional UAPSs use chirp signals or FM signals, which are disadvantaged by low user number, complex implementation, and low utilization bandwidth. In effort to solve these problems, we designed a group of signals based on orthogonal waveforms, then used a genetic algorithm to design a group of phase-coding signals, and finally analyzed the system as established in terms of time measurement precision, performance in the multipath environment, and the aliasing effects of multi-target signals. Simulation results showed that the signals we designed have ideal correlation performance and high time resolution. We further conducted an experiment in shallow water to test the proposed method's performance, and again found that the signals are suitable for multi-target UAPSs and thus show favorable potential in ocean engineering applications. (C) 2016 Elsevier Ltd. All rights reserved.
机译：自主水下航行器（AUV）或遥控车辆（ROV）通常在深水工业中使用。由于声波是在水下传输信息的最有效载体，因此水下声定位系统（UAPS）被视为AUV或ROV的基本定位和导航组件。多目标定位是当前UAPS正在探索的最重要的新兴趋势，其中信号设计是一个主要问题。设计的波形决定了UAPS的检测性能，用户数量和系统复杂性。传统的UAPS使用线性调频信号或FM信号，这不利于用户数量少，实现复杂和利用率低。为了解决这些问题，我们设计了一组基于正交波形的信号，然后使用遗传算法设计了一组相位编码信号，最后从时间测量精度，性能方面对所建立的系统进行了分析。多径环境以及多目标信号的混叠效应。仿真结果表明，我们设计的信号具有理想的相关性能和较高的时间分辨率。我们进一步在浅水中进行了实验，以测试该方法的性能，并再次发现该信号适用于多目标UAPS，因此在海洋工程应用中显示出良好的潜力。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean Engineering》 |2016年第1期|15-21|共7页
  • 作者

    Han Yunfeng; Zheng Cuie; Sun Dajun;

  • 作者单位

    Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China|Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China;

    Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China|Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China;

    Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China|Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Orthogonal waveforms; Genetic algorithm; Multi-target positioning; Underwater acoustic positioning system;

    机译：正交波形遗传算法多目标定位水下声定位系统;

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