Accession Number:

ADA629917

Title:

High Frequency Acoustics and Signal Processing for Weapons

Descriptive Note:

Annual rept.

Corporate Author:

PENNSYLVANIA STATE UNIV STATE COLLEGE APPLIED RESEARCH LAB

Personal Author(s):

Report Date:

2003-09-30

Pagination or Media Count:

14.0

Abstract:

Task 1 The long-term goal of this task is to determine, for a broad range of frequencies nominally 10-100 kHz, the limitations imposed by the oceanic environment on the exploitation of coherent signal structure. This understanding is required in order to optimize sonar signal processing structures e.g. channel conditioning, especially in shallow water, for wideband signal and processor design, and for acoustic propagation modeling. Task 2 The long-term goal of this task is to develop the capability to predict the dynamic and spatial characteristics, and the corresponding acoustic response attenuation, local sound speed, and backscattering strength, of the bubbly wakes of Navy warships. We seek a predictive capability for how acoustic propagation and scattering vary with frequency, source-receiver geometry relative to the wake, and the shape and speed of the vessel, as well as the spatial and temporal statistics of attenuation and scattering strength in the wake.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE