Application of bicoherence analysis in study of wave interactions in space plasma

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA094iA01p00435· OSTI ID:5994701

Lagoutte, D; Lefeuvre, F ^[1]; Hanasz, J ^[2]

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1. CNRS, Orleans (France)
2. Copernicus Astronomical Center, Torun (Poland)

A spectral analysis at the second order (power spectrum) loses the phase information among the different Fourier components. To retain this information, the bispectrum (third order) and/or the bicoherence (normalized bispectrum) are calculated. Application to simulated data, shows the dependence of the bispectrum to amplitudes of involved waves and of the bicoherence to signal-to-noise ratio. Bicoherence technique is applied in the analysis of harmonics produced by an electronic receiver, as well as in the investigation of phase coherence between a ground-transmitter signal, a natural ELF emission near the proton gyrofrequency, and the sidebands around the carrier. Strong arguments are provided that the sidebands are generated by a parametric interaction between the transmitter signal and the ELF emission.

• OSTI ID: 5994701
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:A1; ISSN JGREA; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
DATA ANALYSIS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
ELECTROMAGNETIC RADIATION
FOURIER ANALYSIS
INTERACTIONS
IONOSPHERE
NOISE
PLANETARY IONOSPHERES
PLASMA WAVES
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
SIGNAL-TO-NOISE RATIO
WHISTLERS