Accession Number : AD0872123

Title :   Joint Active and Passive Sonar Signal Processing Using Arrays.

Descriptive Note : Rept. for Jun 68-May 69,

Corporate Author : NAVAL UNDERSEA RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA

Personal Author(s) : Stradling, C. S. ; Baggeroer, A. B.

Report Date : 10 DEC 1969

Pagination or Media Count : 223

Abstract : A significant portion of the research in sonar data processing involves attempts to devise systems with improved capabilities for detecting, classifying, and tracking signals. Weak signals are of particular concern since a very high premium is placed on achieving maximum attainable performance in these situations. One method for improving system performance is to employ arrays of hydrophones. This enables one to exploit the spatial information contained in the signals. While arrays have been used extensively in sonar systems, it has been only recent that the problem of optimizing their performance for a given noise environment has been considered. Whereas the theory associated with the problem is a well-established topic in detection and estimation theory, it is not generally available to the engineers who must consider the application of the theory to realworld systems. The purpose of this report is therefore to collect, under one cover, the theory of optimum array processing and the requisite background material to facilitate its understanding. It is believed that this will stimulate the consideration of these techniques for future sonar data processing systems. (Author)

Descriptors :   (*SONAR RECEIVERS, SONAR ARRAYS), (*SONAR SIGNALS, DATA PROCESSING), HYDROPHONES, MATHEMATICAL PREDICTION, VECTOR ANALYSIS, PROBABILITY DENSITY FUNCTIONS, INTEGRAL TRANSFORMS, MATRICES(MATHEMATICS), CORRELATORS, OPTIMIZATION.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE