Investigation of the Propagation Stability of a Time Spread Underwater Acoustic Channel.
Abstract
An experimental investigation of analysis and display techniques for extracting stability information from underwater acoustic propagation data has shown the feasibility and usefulness of a specific display format called the Channel Digit Response. All of the complex nature of the channel reception is retained in the display, but the format compresses the data and enhances the extraction of qualitative stability information. The investigation and conclusions are limited to propagation tests using periodic transmissions, as periodic transmissions are the usual type used for studying varying multipath propagation. The investigation data base spanned 133 hours, from a 43 n. mile range across the Straits of Florida. The effective time resolution of the data was .02 seconds. Crosscorrelation, autocorrelation, and power spectrum analysis, and several threshold techniques based on time-lag crosscorrelation were investigated, and their effectiveness compared to the Channel Digit Response. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- AD0778683
Entities
People
- Raymond L. Veenkant
Organizations
- University of Michigan