Accession Number : AD0724656

Title :   A Simulation of the Swell-Induced Magnetic Vector in a Shallow Sea.

Descriptive Note : Research and development rept.,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT LAB PANAMA CITY FLA

Personal Author(s) : Carlton,Patrick N.

Report Date : JAN 1971

Pagination or Media Count : 30

Abstract : A method for the generation of a realistic representation of an ocean parameter is outlined. The particular parameter chosen is the swell-induced magnetic field vector in a shallow sea. The method can be applied to other parameters such as ambient acoustic pressure, and velocity field noises. Starting from a periodic representation of the swell-induced magnetic field, the simulation of the random time behavior of the parameter is obtained by amplitude modulation of a superposition of these periodic functions. This superposition is designed to produce a function with a frequency range comparable to the swell frequency band. The modulation is applied intermittently at random instants of time. This approximation of the three Cartesian components of the swell-induced magnetic field has been calculated for the purpose of providing a background noise signal for a test of a proposed signal analysis scheme. (Author)

Descriptors :   (*OCEAN WAVES, *GEOMAGNETISM), (*MAGNETIC ANOMALY DETECTION, SPECTRUM ANALYZERS), SHALLOW WATER, MATHEMATICAL MODELS, POWER SPECTRA, BACKGROUND, NOISE, SIGNALS, INTERACTIONS, MOTION, STOCHASTIC PROCESSES

Subject Categories : Physical and Dynamic Oceanography
      Geomagnetism
      Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE