Accession Number : AD0726637

Title :   Effect of Filtering on Statistical Properties of Random Functions.

Descriptive Note : Scientific rept.,

Corporate Author : AERONAUTICAL RESEARCH ASSOCIATES OF PRINCETON INC N J

Personal Author(s) : Houbolt,John C. ; Williamson,Guy G. ; Jones,Brian H.

Report Date : NOV 1969

Pagination or Media Count : 42

Abstract : The effect of using a high pass filter in an attempt to remove drift and other low frequency errors from random time histories is examined. Specifically, the problem of deriving vertical gust velocities from aircraft flight measurements is considered, and attention is focused on how the usually arbitrary filtering that is done affects the deduced values of such quantities as power spectrum, scale of turbulence, probability density functions, and peak count values. It is found that the results are strongly dependent on the filtering used. (Author)

Descriptors :   (*STATISTICAL DATA, SPECTRUM ANALYZERS), (*GUSTS, VELOCITY), HIGH PASS FILTERS, PROBABILITY DENSITY FUNCTIONS, TIME SERIES ANALYSIS, INTEGRAL TRANSFORMS, POWER SPECTRA, ERRORS

Subject Categories : Meteorology
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE