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Multipath Propagation of Acoustic Signal in a Swimming Pool—Source Localization Problem
- Source :
- Sensors, Vol 22, Iss 1162, p 1162 (2022), Sensors; Volume 22; Issue 3; Pages: 1162
- Publication Year :
- 2022
- Publisher :
- MDPI AG, 2022.
-
Abstract
- This paper explores the problem of severe multipath propagation of underwater acoustic signals in a swimming pool. The problem appeared in a study that examined a system used to signal emergency situations (i.e., pre-drowning symptoms detected by a wearable device on a pool user’s wrist) and locate the signal source. A swimming pool acoustic environment is characterized by the presence of large flat reflecting planes surrounding a small volume of water. The reflections are numerous and much stronger than in typical hydroacoustic applications. In this paper, we attempted to create a model of the swimming pool response, one that is suitable for simulation experiments with detection and localization of emergency signals. Then, we explore the possible remedies for the localization system, applied on the transmit side (waveform design) and on the receive side (receiver placement and signal processing). Finally, we present an algorithm for object localization, considering the possible reflections with a multi-hypothesis approach.
- Subjects :
- Chemical technology
multipath propagation
underwater propagation modeling
multi-hypothesis testing
detection
Signal Processing, Computer-Assisted
TDOA
Acoustics
TP1-1185
Biochemistry
Atomic and Molecular Physics, and Optics
Analytical Chemistry
Swimming Pools
Computer Simulation
Electrical and Electronic Engineering
Instrumentation
Algorithms
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 22
- Issue :
- 1162
- Database :
- OpenAIRE
- Journal :
- Sensors
- Accession number :
- edsair.doi.dedup.....5dc5db61de0f7010b6e16a561abb36e0