منابع مشابه
Shallow Water Propagation and Surface Reverberation Modeling
The primary long-term goal is to measure and model high-frequency acoustic propagation in the presence of surface gravity waves and breaking waves to better understand the effects of surface reverberation on shallow water, underwater acoustic communications (ACOMS). Secondary long-term goals are to exploit measurements of breaking wave noise to infer bubble cloud populations at the sea surface ...
متن کاملModeling of Mid-Frequency Reverberation in Very Shallow Water
A specific objective of this research is to develop a mid-frequency shallow-water reverberation model relevant to specific conditions (1 – 10 kHz, ~20 m water depth, ~ 5 km range) of the ONR Target and Reverberation experiment [1] performed during the spring of 2013 (TREX13). The research is to result in developing computer simulation codes and algorithms for the TREX13 acoustic data analysis b...
متن کاملChirp sounding the shallow water acoustic channel
Characterisation of the shallow water acoustic communications channel involves the analysis of sounding data. Chirp signals have many properties which make them an attractive choice for channel sounding. They are easily generated and channel responses can be processed in the time or frequency domain for channel estimation. In the rapidly varying shallow water environment time domain techniques ...
متن کاملImplementation of an adaptive burst DQPSK receiver over shallow water acoustic channel
In an environment such as underwater channel where placing test equipments are difficult to handle, it is much practical to have hardware simulators to examine suitably designed transceivers (transmitter/receiver). The simulators of this kind will then allow researchers to observe their intentions and carry out repetitive tests to find suitable digital coding/decoding algorithms. In this p...
متن کاملUncertainty of Propagation and Reverberation in Shallow Water Environments due to Seafloor Variability
Evaluate the relative importance of various types of seafloor variability on the predictability of the temporal evolution of acoustic transmissions and reverberation in shallow water waveguides. The measures of uncertainty include the predictability of the levels of the transmissions/reverberation, the decay rates, and the coherent features of the time-depth evolution of the receptions. Seafloo...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1985
ISSN: 0001-4966
DOI: 10.1121/1.2022133