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Particular attention is placed on the hardware structure of the system and on the research of the best network performances for an efficient and secure streaming. Specifically, these acoustic and video sensors, microphone arrays and video cameras respectively, can be employed in any robotic vehicles and systems, both mobile and fixed. The main objective is to intercept unidentified sources, like any kind of vehicles or robotic vehicles, drones, or people whose identity is not a-priory known whose instantaneous location and trajectory are also unknown. The proposed multimedia network infrastructure is analysed and studied in terms of efficiency and robustness, and experiments are conducted on the field to validate it. The hardware and software components of the system were developed using suitable technologies and multimedia transmission protocols to meet the requirements and constraints of computation performance, energy efficiency, and data transmission security.<\/jats:p>","DOI":"10.1007\/s11042-023-14677-7","type":"journal-article","created":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T09:03:41Z","timestamp":1678871021000},"page":"29753-29768","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Performance evaluation of a Wi-Fi-based multi-node network for distributed audio-visual sensors"],"prefix":"10.1007","volume":"82","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9701-8650","authenticated-orcid":false,"given":"Niccol\u00f2","family":"Cecchinato","sequence":"first","affiliation":[]},{"given":"Andrea","family":"Toma","sequence":"additional","affiliation":[]},{"given":"Carlo","family":"Drioli","sequence":"additional","affiliation":[]},{"given":"Giovanni","family":"Ferrin","sequence":"additional","affiliation":[]},{"given":"Gian Luca","family":"Foresti","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,3,15]]},"reference":[{"issue":"9","key":"14677_CR1","doi-asserted-by":"publisher","first-page":"13389","DOI":"10.1007\/s11042-020-10307-8","volume":"80","author":"P Barello","year":"2021","unstructured":"Barello P, Hossain MS (2021) Multimodal person detection system. 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