HF Broadband Time/Frequency Spreading

Culver, Richard L

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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Mots clés AGROVOC

acoustics algorithms baltic sea hydrophones north sea ocean bottom topography statistical analysis wind

Informations bibliographiques

D'autres materias

*time frequency spread models; *matched filter output; *broadband; *time spread; *shallow water; *sonar signals; Signal ambiguity function; Acoustic propagation; Wideband processing; *signal processing; Sound transmission; *spreading function; Basis functions; Radiofrequency wave propagation; *spread spectrum; Processor design; Shallow depth; *frequency spread; *high frequency; Physical and dynamic oceanography; *underwater; Signal design; Acoustic velocity; *optimization

Langue

anglais

Note

FAO AGRIS - Système international des sciences et technologies agricoles

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HF Broadband Time/Frequency Spreading

1998

Mots clés AGROVOC

Informations bibliographiques