A practical guide to chirp spread spectrum for acoustic underwater communication in shallow waters
A practical guide to chirp spread spectrum for acoustic underwater communication in shallow waters
复制标题
DOI：
10.1145/3291940.3291964
复制
发表时间：
2018-12
期刊：
影响因子：
--
通讯作者：
Fabian Steinmetz;J. Heitmann;C. Renner
中科院分区：
文献类型：
--
作者：
Fabian Steinmetz;J. Heitmann;C. Renner
小型和廉价的微型AUV能够在浅近岸沃茨中实现各种水下监测应用;例如，检查水下资产、观察水质和查明污染源。群体成员的形成和协作还需要基于廉价、微型声学设备的通信和自我定位。然而，这是严重阻碍了多路径传播和散射的影响，在浅水沃茨。总的来说，我们发现了基于啁啾的改进，即，频率扫描---同步在这些情况下。本文提出了寻找合适的啁啾参数的策略。首先，我们研究了基于啁啾的调制对FSK的好处和适用性。其次，我们讨论了在现实世界的情况下，啁啾参数的影响，并确定扫描点w.r.t.带宽以将时域中的位置的标准偏差提高到高于该点的86%。第三，我们提出的指示，选择这些参数在一个有效的和适当的方式为任何浅水场景。
Small and cheap micro AUVs enable diverse underwater monitoring applications in shallow inshore waters; e.g., inspection of underwater assets, observation of water quality, and identification of pollution sources. The formation and collaboration of swarm members yet requires communication and self-localization based on cheap, miniature acoustic devices. However, this is severely hampered by the effects of multi-path propagation and scattering in shallow waters. In general, we discovered improvements of chirp-based---i.e., frequency-sweep---synchronization in these scenarios. This paper presents strategies to find proper chirp parameters. First, we study the benefits and applicability of chirp-based modulation against FSK. Second, we discuss the impact of the chirp parameters in real-world scenarios and identify sweep spots w.r.t. bandwidth to improve the standard deviation of the position in the time domain up to 86 % above this point. Third, we present instructions to choose these parameters in an efficient and appropriate way for any shallow water scenario.