Wavelet analysis of solar diameter measurements performed at Calern Observatory astrolabe

Authors
Moussaoui, R Irbah, A
Citation
R. Moussaoui et A. Irbah, Wavelet analysis of solar diameter measurements performed at Calern Observatory astrolabe, ASTRO SP SC, 273(1-4), 2000, pp. 25-33
Citations number
13
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICS AND SPACE SCIENCE
ISSN journal
0004640X → ACNP
Volume
273
Issue
1-4
Year of publication
2000
Pages
25 - 33
Database
ISI
SICI code
0004-640X(200009)273:1-4<25:WAOSDM>2.0.ZU;2-2
Abstract
Since 1975, a visual program of solar diameter measurement is pursued at Ca lern Observatory (France). These observations allowed to put in evidence va riations in solar data. Several studies were developed in order to analyze the data using appropriate methods (deconvolution of the observation window function and least square fits) (Moussaoui et al., 1999). We present in th is work a time-frequency study of the found harmonic terms. It is developed using the wavelet transform. The obtained results are presented and discus sed.