{"title":"浅水水声通信中的啁啾扩频实用指南","authors":"Fabian Steinmetz, J. Heitmann, C. Renner","doi":"10.1145/3291940.3291964","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":429405,"journal":{"name":"Proceedings of the 13th International Conference on Underwater Networks & Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"A practical guide to chirp spread spectrum for acoustic underwater communication in shallow waters\",\"authors\":\"Fabian Steinmetz, J. Heitmann, C. Renner\",\"doi\":\"10.1145/3291940.3291964\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":429405,\"journal\":{\"name\":\"Proceedings of the 13th International Conference on Underwater Networks & Systems\",\"volume\":\"10 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-12-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 13th International Conference on Underwater Networks & Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/3291940.3291964\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 13th International Conference on Underwater Networks & Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3291940.3291964","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A practical guide to chirp spread spectrum for acoustic underwater communication in shallow waters
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.