Results 51 to 60 of about 33,601 (184)
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
IEEE Access, 2019 Underwater localization is used as a key element in most applications of underwater communications. Despite the global positioning system (GPS) receivers are usually employed in terrestrial wireless sensor networks, they cannot be exploited for ...
Inam Ullah +4 more
doaj +1 more source
Optimal Fair Scheduling in S-TDMA Sensor Networks for Monitoring River Plumes [PDF]
, 2016 Underwater wireless sensor networks (UWSNs) are a promising technology to provide oceanographers with environmental data in real time. Suitable network topologies to monitor estuaries are formed by strings coming together to a sink node.This network ...
Luque-Nieto, Miguel Ángel +3 more
core +4 more sources
ORIT: A Transport Layer Protocol Design for Underwater DTN Sensor Networks
IEEE Access, 2019 Research challenges have focused on underwater acoustic sensor networks characterized by long propagation delay, narrow bandwidth, and frequently disconnected interruption, among others, which can be viewed as delay/disruption tolerant networks (DTNs ...
Yishan Su, Rong Fan, Zhigang Jin
doaj +1 more source
Sensor enclosures: example application and implications for data coherence [PDF]
, 2013 Sensors deployed in natural environments, such as rivers, beaches and glaciers, experience large forces and damaging environmental conditions. Sensors need to be robust, securely operate for extended time periods and be readily relocated and serviced ...
Akyildiz +9 more
core +4 more sources
Sensors, 2014 Nowadays, there is a greater need for energy efficient and stable underwater sensor networks (UWSNs). Underwater sensors usually do not have enough power, so the goal of underwater sensor networks is to make the network have a long lifetime.
Fei Wang +5 more
doaj +1 more source
Optimization of depth-based routing for underwater wireless sensor networks through intelligent assignment of initial energy [PDF]
, 2017 Underwater Wireless Sensor Networks (UWSNs) are extensively used to explore the diverse marine environment. Energy efficiency is one of the main concerns regarding performance of UWSNs.
Ahmed, Tanveer +4 more
core +3 more sources
The performance of directional flooding routing protocol for underwater sensor networks [PDF]
, 2015 The specific characteristic of underwater environment introduces new challenges for the networking protocols. Underwater Wireless Sensor Networks (UWSN) and terrestrial Wireless Sensor Networks (WSN) share some common properties but their differences too.
Idrus, Nur Asfarina
core +1 more source
TDA-MAC : TDMA without clock synchronization in underwater acoustic networks [PDF]
, 2018 This paper investigates the application of underwater acoustic sensor networks for large scale monitoring of the ocean environment. The low propagation speed of acoustic signals presents a fundamental challenge in coordinating the access to the shared ...
Mitchell, Paul Daniel +2 more
core +1 more source
Range-only underwater target localization : error characterization [PDF]
, 2016 Locating a target from range measurements using only one mobile transducer has been increased over the last years. This method allows us to reduce the high costs of deployment and maintenance of traditional fixed systems on the seafloor such as Long
Gomáriz Castro, Spartacus +5 more
core +2 more sources