Accession Number:

ADA063218

Title:

Investigation of the Potentialities of Using Seismic Sensors for the Detection of Ships and Other Naval Platforms.

Descriptive Note:

Final rept.,

Corporate Author:

UNDERWATER SYSTEMS INC SILVER SPRING MD

Personal Author(s):

• Hecht,Richard J.
• Holmer,Curtis I.
• Mole,Louis A.

Report Date:

1978-09-24

Pagination or Media Count:

90.0

Abstract:

The potential of using geophones and seismic paths for the acoustic detection of ships is investigated using available data and theory. The use of seismic paths offer the potential of a reliable detection range that is independent of the sound velocity profile in the water. An estimate of the achievable reliable range using a multiaxial geophone is 10 to 20 km. The attenuation of sound in the sediment is the controlling factor in signal propagation. The estimates need to be confirmed by experimental investigation. Author

Descriptors:

• *SEISMIC DETECTION
• *GEOPHONES
• MATHEMATICAL MODELS
• NAVAL VESSELS
• SIGNAL TO NOISE RATIO
• ACOUSTIC DETECTION
• SHALLOW WATER
• WAVE PROPAGATION
• SOUND TRANSMISSION
• SEISMIC WAVES
• ATTENUATION
• RANGE(DISTANCE)
• SEDIMENTS
• OCEAN BOTTOM
• BACKGROUND NOISE
• SEISMIC ARRAYS
• EXTREMELY LOW FREQUENCY

Subject Categories:

• Seismology
• Seismic Detection and Detectors
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE