Browsing Reprints by Subject "Underwater communications"
Now showing items 21-29 of 29
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NEMO: An architecture for software communications research in the maritime domain
(CMRE, 2019/06)This paper presents a high-level overview of NEMO, an implementation of a communications research software workspace with special focus on application scenarios involving underwater (e.g. acoustic), and other maritime ... -
On adaptive modulation for low SNR underwater acoustic communications
(CMRE, 2019/05)This paper deals with adaptive underwater acoustic (UWA) communications where the receiver must operate at low signal-to-noise ratios (SNRs). The proposed modem is equipped with a set of direct sequence spread spectrum ... -
A paradigm shift of interoperable submarine rescue operations: the usage of JANUS during the Dynamic Monarch 2017 exercise
(CMRE, 2019/05)The NATO Centre for Maritime Research and Experimentation (CMRE) participated for the first time in the Dynamic Monarch submarine rescue exercise, bringing to the operational players a new interoperable digital underwater ... -
Performance evaluation of underwater medium access control protocols: at-sea experiments
(CMRE, 2019/06)In this paper, we investigate the performance of three medium access control (MAC) protocols (CSMA, TLohi, and DACAP) representing simple, intermediate, and fully negotiated protocols, to access the underwater acoustic ... -
Real-time clock synchronisation in underwater acoustic networks
(CMRE, 2019/06)This paper proposes an algorithm for real-time clock synchronisation in underwater acoustic networks. The algorithm models modem clocks as linear functions and embeds the data necessary for the clock synchronisation procedure ... -
Recent technological advances in underwater autonomy
(2019/05)Underwater Unmanned systems (or more precisely systems of systems) will definitely play an important role in future maritime surveillance and environmental data collection. For many years, the NATO Centre for Maritime ... -
A robust, opportunistic clock synchronization algorithm for ad hoc underwater acoustic networks
(CMRE, 2019/06)The proliferation of deployed sea-going autonomous platforms, such as autonomous underwater vehicles (AUVs), unmanned surface vehicles (USV), and sensor nodes anchored to the seabed, makes the deployment of true underwater ... -
Supporting AUV localisation through next generation underwater acoustic networks: results from the field
(CMRE, 2017/11)This work describes how the localisation of autonomous underwater vehicles can be supported through net-worked acoustic communication. The localisation approach in-cludes timing information within acoustic messages to ... -
Underwater communications research and development at CMRE
(CMRE, 2019/06)A key to developing autonomous maritime systems for NATO is communication among data gathering platforms below and above the water. However, unlike the mature technologies that are used for terrestrial networks, underwater ...