A Statistical Analysis of the Performance of a Towed Array System

In November 1974, a set of experiments were conducted in the Mediterranean using a three section towed array. Data were both analyzed on-line and recorded for later analysis. This report presents the results of a detailed off-line analysis for the SEAGUARD Project of a portion of the data recorded d...

Full description

Saved in:
Bibliographic Details
Main Authors: Heitmeyer, Richard M, Wales, Stephen C, Deihl, David T
Format: Report
Language:English
Subjects:
Acoustic Detection and Detectors
ACTIVE SONAR
ANTISUBMARINE WARFARE
APERTURES
BANDWIDTH
BEAM FORMING
GAIN
GAUSSIAN NOISE
HYDROPHONES
IONIAN SEA
MEDITERRANEAN SEA
SEAGUARD PROJECT
SIGNAL PROCESSING
SIGNAL TO NOISE RATIO
SONAR ARRAYS
STATISTICAL ANALYSIS
SUBMARINE DETECTION
SUPERLOW FREQUENCY
TOWED SONAR
Undersea and Antisubmarine Warfare
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In November 1974, a set of experiments were conducted in the Mediterranean using a three section towed array. Data were both analyzed on-line and recorded for later analysis. This report presents the results of a detailed off-line analysis for the SEAGUARD Project of a portion of the data recorded during a radial source tow in the Ionian Basin. The objectives of the analysis are to measure the performance of the three arrays and to determine the relationship between the system performance and the three basic system parameters: array length, analysis bandwidth, and averaging time. These objectives provide a firm basis for SEAGUARD design and experiment. The approach is as follows: The system performance is characterized in terms of the mean values of the signal gain, the noise gain and the array gain. The gains are computed for three aperture lengths, quarter, half and full on each array to determine their dependence on array length. Histograms for these quantities show their general character. Standard deviations provide a simple measure of the fluctuations about the means. The means and standard deviations of the constituents of the system gains are also computed as a function of aperture.