A high-resolution underwater acoustic communication propagation simulator with multi-path transient sea-surface interactions
MetadataShow full item record
A channel simulation has been developed to explore the fine time-scale Doppler and multi-path arrival-time delay spreading imparted to underwater communication signals by interaction with the transient ocean surface. The simulation provides a configurable ocean test-bed for the purpose of testing and developing acoustic signal data coding and decoding strategies that are more reliable and resistant to the natural reverberation, arrival delay distortion and Doppler distortion that are inherent in relatively shallow underwater signal propagation. The simulator operates by calculating the transmit impulse response for successive realisations of a three-dimensional ocean surface with configurable sea and swell parameters. A unique transmit impulse response history is calculated for each of the underlying flat-surface ray-paths, capturing time-varying fluctuations of the rough surface around the mean-plane response. The realism of the synthetic multi-path channel response history is then evaluated against an experimental channel.
Showing items related by title, author, creator and subject.
Wide-band shallow acoustic channel simulation with realistic Doppler and delay spreading for 3D evolving rough surfacesCaley, M.; Duncan, Alec (2016)© 2016 IEEE.A phase-coherent shallow underwater multipath channel simulation is described that combines the eigenpath amplitude/delay responses from a ray-tracing model for the flat-surface channel geometry, with the ...
Loh, Ruen Chze (2010)Most of today’s computer communications use only a single (s,t) path to transmit a message from a source node s to a destination node t. There are two major problems with this single path communication. Firstly, the ...
Keshavarz Faraj Khah, Nasser (2007)Sequestration has been suggested as a solution for resolving the problem of increasing greenhouse gas emissions. CO2 is the major greenhouse gas which results from using fossil fuels for domestic and industrial purposes. ...