Results 11 to 20 of about 72,121 (192)
, 2008 The underwater acoustic channel is characterized by a path loss that depends not only on the transmission distance, but also on the signal frequency.
Lucani, Daniel E. +2 more
core +3 more sources
A novel cooperative opportunistic routing scheme for underwater sensor networks [PDF]
, 2016 Increasing attention has recently been devoted to underwater sensor networks (UWSNs) because of their capabilities in the ocean monitoring and resource discovery.
Abello +8 more
core +1 more source
Coherence extrapolation for underwater ambient noise
The Journal of the Acoustical Society of America, 2014 This paper considers extrapolation of the vertical coherence of surface-generated oceanic ambient noise to simulate measurements made on a longer sensor array. The extrapolation method consists of projecting the noise coherence measured with a limited aperture array into the domain spanned by prolate spheroidal wave functions, which are an orthogonal ...
Quijano, Jorge +3 more
openaire +4 more sources
Underwater noise due to precipitation [PDF]
The Journal of the Acoustical Society of America, 1989 In 1959, G. Franz published a thorough investigation of the underwater sound produced by liquid drop impacts [G. Franz, J. Acoust. Soc. Am. 31, 1080 (1959)]. He discovered that, under certain conditions, a gas bubble was entrained by the impacting droplet, and the subsequent oscillation of this bubble resulted in a large amount of radiated sound ...
Crum, Lawrence A. +3 more
openaire +2 more sources
Valley-projected edge modes observed in underwater sonic crystals
, 2018 Recently, the topological physics in acoustics has been attracting much attention. However, all the studies are aimed to elastic or airborne sound systems.
Cai, Xiangxi +6 more
core +1 more source
TS-MUWSN: Time synchronization for mobile underwater sensor networks [PDF]
, 2016 Time synchronization is an important, yet challenging, problem in underwater sensor networks (UWSNs). This challenge can be attributed to: 1) messaging timestamping; 2) node mobility; and 3) Doppler scale effect. To mitigate these problems, we present an
Bouvet, Pierre-jean +2 more
core +2 more sources
On the BER of Multiple-Input Multiple-Output Underwater Wireless Optical Communication Systems
, 2015 In this paper we analyze and investigate the bit error rate (BER) performance of multiple-input multiple-output underwater wireless optical communication (MIMO-UWOC) systems.
Jamali, Mohammad Vahid, Salehi, Jawad A.
core +1 more source
Airborne sound propagation over sea during offshore wind farm piling [PDF]
, 2014 Offshore piling for wind farm construction has attracted a lot of attention in recent years due to the extremely high noise emission levels associated with such operations.
Botteldooren, Dick +2 more
core +2 more sources
, 2017 In this paper, we analytically study the bit error rate (BER) performance of underwater visible light communication (UVLC) systems with binary pulse position modulation (BPPM).
Jamali, Mohammad Vahid +2 more
core +1 more source
Low-frequency active noise control of an underwater large-scale structure with distributed giant magnetostrictive actuators [PDF]
, 2017 A light and thin underwater large-plate active acoustic structure is developed that satisfies the particular requirements of high pressure resilience, low frequency and high efficiency encountered in underwater work environments.
Thomas, P. J. (Peter J.), Wang, Wenjie
core +1 more source