High-resolution wave number spectrum using multi-point measurements in space – the Multi-point Signal Resonator (MSR) technique
Narita, Y. and Glassmeier, Karl-Heinz and Motschmann, Uwe (2011) High-resolution wave number spectrum using multi-point measurements in space – the Multi-point Signal Resonator (MSR) technique. Annales Geophysicae (29), pp. 351-360. Copernicus. DOI: 10.5194/angeo-29-351-2011.
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Abstract. A new analysis method is presented that provides a high-resolution power spectrum in a broad wave number domain based on multi-point measurements. The analysis technique is referred to as the Multi-point Signal Resonator (MSR) and it benefits from Capon’s minimum variance method for obtaining the proper power spectral density of the signal as well as the MUSIC algorithm (Multiple Signal Classification) for considerably reducing the noise part in the spectrum. The mathematical foundation of the analysis method is presented and it is applied to synthetic data as well as Cluster observations of the interplanetary magnetic field. Using the MSR technique for Cluster data we find a wave in the solar wind propagating parallel to the mean magnetic field with relatively small amplitude, which is not identified by the Capon spectrum. The Cluster data analysis shows the potential of the MSR technique for studying waves and turbulence using multi-point measurements.
|Title:||High-resolution wave number spectrum using multi-point measurements in space – the Multi-point Signal Resonator (MSR) technique|
|Journal or Publication Title:||Annales Geophysicae|
|In Open Access:||Yes|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 351-360|
|Keywords:||Space plasma physics (Experimental and mathematical techniques; Turbulence; Waves and instabilities)|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Planetenforschung (old)|
|Institutes and Institutions:||Institute of Planetary Research > Asteroids and Comets|
|Deposited By:||Laura-Maria Brumm|
|Deposited On:||20 Jun 2011 15:06|
|Last Modified:||26 Mar 2013 13:26|
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