HF Broadband Time/Frequency Spreading
1998
Culver, Richard L
The long-term goal is to provide underwater weapon system designers with a means of testing broadband signals and signal processing algorithms in shallow ocean scenarios where time and frequency (T/F) spread are often significant. This capability is required for sonar signal processing optimization and wideband signal and processor design. The scientific objectives are to measure T/F spread directly along with relevant environmental parameters (primarily wind speed, sound speed profile, and bottom properties) at several shallow ocean regions, and from those data develop an empirical, environment-driven T/F spread model. Essentially, the model will be a correction to ray tracing predictions made using validated boundary scattering and reflection models.
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