Estimation of the RMS Value of Summed Sinusoids and the Application to Acoustic Noise Measurement in Shallow Water.

Abstract

The spatial variation of many measurable quantities such as pressure or velocity may generally be synthesised by the sum of a given number of sinusoids. The power average of a small number of random samples is presented as a suitable estimate of the mean power contained in such a sum of sinusoids of random argument and equal amplitude. The confidence levels which apply to these estimates are presented, and the technique is illustrated by its application to the measurement of acoustic radiated noise in shallow water by the appropriate use of vertical transducer arrays. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA068788

Entities

People

  • A. W. Walker

Tags

DTIC Thesaurus Topics

  • Data Analysis
  • Frequency
  • Frequency Bands
  • Human Factors Engineering
  • Measurement
  • Power Spectra
  • Probability
  • Probability Density Functions
  • Radiated Noise
  • Radiation
  • Random Variables
  • Shallow Water
  • Simulations
  • Sine Waves
  • Spectra
  • Statistical Samples
  • Transfer Functions

Readers

  • Acoustics.
  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Phased Array Antenna Design.