Agnieszka Czapiewska - Profil naukowy - MOST Wiedzy

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  • Reduction of the Multipath Propagation Effect in a Hydroacoustic Channel Using Filtration in Cepstrum

    - SENSORS - Rok 2020

    During data transmission in a hydroacoustic channel, one of the problems is the multipath propagation effect, which leads to a decrease in the transmission parameters and sometimes completely prevents it. Therefore, we have attempted to develop a method, which is based on a recorded hydroacoustic signal, that allows us to recreate the original (generated) signal by eliminating the multipath effect. In our method, we use cepstral...

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  • A Method for Underwater Wireless Data Transmission in a Hydroacoustic Channel under NLOS Conditions

    - SENSORS - Rok 2021

    Wireless data transmission in the hydroacoustic channel under non-line-of-sight (NLOS) propagation conditions, for example, during a wreck penetration, is difficult to implement reliably. This is mostly due to the multipath propagation, which causes a reduction in the quality of data reception. Therefore, in this work an attempt has been made to develop a reliable method of wireless underwater communication test it under the NLOS...

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  • Analysis of Impulse Responses Measured in Motion in a Towing Tank

    - Electronics - Rok 2022

    The growing interest in developing autonomous underwater vehicles (AUVs) and creating underwater sensor networks (USNs) has led to a need for communication tools in underwater environments. For obvious reasons, wireless means of communication are the most desirable. However, conducting research in real conditions is troublesome and costly. Moreover, as hydroacoustic propagation conditions change very significantly, even during...

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