Publisher DOI: 10.1145/3291940.3291964
Title: A practical guide to chirp spread spectrum for acoustic underwater communication in shallow waters
Language: English
Authors: Steinmetz, Fabian 
Heitmann, Jan 
Renner, Bernd-Christian 
Issue Date: 3-Dec-2018
Source: ACM International Conference Proceeding Series: 1-8 (2018-12-03)
Journal or Series Name: ACM International Conference Proceeding Series 
Abstract (english): © 2018 Copyright held by the owner/author(s). Publication rights licensed to ACM. 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.
URI: http://hdl.handle.net/11420/2140
ISBN: 978-145036193-4
Institute: smartPORT E-EXK2 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
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