Accession Number:

ADA045665

Title:

The Mathematical Theory of the Multiple Scattering of an Acoustic Pulse from a Random Collection of Volume Scatterers with Application to Scattering from Fish Schools.

Descriptive Note:

Preliminary rept.,

Corporate Author:

TRACOR INC ROCKVILLE MD

Personal Author(s):

• Boyles,C. A.

Report Date:

1969-08-31

Pagination or Media Count:

86.0

Abstract:

This study evaluates the character and extent of the long range classification problem. It was decided to investigate first the BB mode of propagation, reserving the CZ mode for future work. An investigation has shown that schools of fish are probable sources of false contacts for sonars operating with a CW pulse in the BB mode.

Descriptors:

• *ACOUSTIC DETECTION
• *TARGET CLASSIFICATION
• *ANTISUBMARINE WARFARE
• COHERENT RADIATION
• RAYLEIGH SCATTERING
• ACOUSTIC SCATTERING
• RAY TRACING
• SONAR ECHOES
• FALSE TARGETS
• FISHES
• TARGET STRENGTH
• DEEP SCATTERING LAYERS
• BOTTOM BOUNCE
• CONVERGENCE ZONES

Subject Categories:

• Undersea and Antisubmarine Warfare
• Acoustic Detection and Detectors
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE