A Statistical Analysis of the Performance of a Towed Array System
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1976
- Accession Number
- ADC009459
Entities
People
- David T. Deihl
- Richard M. Heitmeyer
- Stephen C. Wales
Organizations
- United States Naval Research Laboratory