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Abstrakt
Performances of underwater acoustic communication (UAC) systems are strongly related to specific propagation conditions of the underwater channel; conditions that can additionally change in time due to the movement of the acoustic system transmitter and receiver or to reflection by underwater objects of the transmitted signal. The time-varying impulse response is a comprehensive description of dynamically changing transmission properties of the UAC channel. It is a basis for estimation of stochastic parameters used for designing the signaling scheme of the communication system. The paper presents the results of a measurement experiment conducted in a shallow water environment. The channel impulse response was measured by the correlation method with the use of two kinds of broadband signals: pseudo-random binary sequence (PRBS) and hyperbolic frequency modulation chirp (HFM). For each measurement result statistical transmission parameters, namely delay spread, Doppler spread, coherence time, and coherence bandwidth were estimated.
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
- Opublikowano w:
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HYDROACOUSTICS
nr 20,
strony 149 - 158,
ISSN: 1642-1817 - Język:
- angielski
- Rok wydania:
- 2017
- Opis bibliograficzny:
- Schmidt J., Kochańska I., Schmidt A.: Measurement of Impulse Response of Shallow Water Communication Channel by Correlation Method// HYDROACOUSTICS. -Vol. 20., (2017), s.149-158
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 221 razy