Accession Number : AD0370623

Title :   INVESTIGATIONS OF VERY LOW FREQUENCY DETECTION TECHNIQUES IN A SEA MEDIUM.

Descriptive Note : Final engineering rept.,

Corporate Author : ITT FEDERAL LABS NUTLEY N J

Personal Author(s) : Perez,Joseph P.

Report Date : 09 FEB 1966

Pagination or Media Count : 109

Abstract : This document presents the results of theoretical and experimental researches into the detection problem of submerged metallic objects by means of ULF electromagnetic, E/M, energy. Analyses of a conductive medium's E/M transmission characteristics, and propagation mechanism are developed. Elements of system design considerations including an examination of reflector qualities and submerged coaxial antenna properties are presented. Field experiments demonstrating a near-surface and near-bottom detection techniques are described and their results discussed. Finally a plan of approach is presented showing a course for the contained study of electromagnetic methods in the detection of submerged metallic objects. (Author)

Descriptors :   (*UNDERWATER OBJECT LOCATORS, VERY LOW FREQUENCY), SNELLS LAW, REFRACTIVE INDEX, UNDERWATER, UNDERWATER OBJECTS, DETECTION (U) ELECTROMAGNETIC FIELDS, ELECTROMAGNETIC RADIATION, ANTENNAS, METALS

Subject Categories : Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE