"For acoustic frequencies of interest in the development of undersea wireless wide-area networks, wind noise is the dominant contribution to channel noise. The large dynamic range of wind noise forces the network designer to consider wide variations in link margin and effective node-to-node range. Previous reported correlations of acoustic communication performance and wind speed led to multiple hypotheses explaining degradation, including noise variability as well as wind-driven sea-surface effects such as roughness, entrained bubbles, mixing, and stratification. This theses examines operations of a 40-node wide-area acoustic network in varying noise conditions. This data set is unique in that the environment is strongly downward refracting. Based on theoretical models, wind noise is assumed to dominate all other noise sources. Considerations include dependence of link margin and range on wind speed. Although the experiment was not designed to examine the correlation between transmission range and wind speed, a weak correlation was observed in the limited data set available." p. i.
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/1936 |
| Date | 09 1900 |
| Creators | Hurt, Christopher S. |
| Contributors | Rice, Joseph A., Stone, Rebecca, Naval Postgraduate School (U.S.). |
| Publisher | Monterey California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Detected Language | English |
| Type | Thesis |
| Format | xiv, 60 p. ;, application/pdf |
| Rights | Approved for public release, distribution unlimited |
Page generated in 0.0027 seconds