[vsnet-chat 7877] Program WWZ: Wavelet Analysis of Astronomical Signals With Irregularly Spaced Arguments

[Ivan Andronov]

Program WWZ: Wavelet Analysis of Astronomical Signals With Irregularly Spaced Arguments 

Ivan L. Andronov, Alevtina V.Naumova 

Department "High and Applied Mathematics", Odessa National Maritime University,
Mechnikova, 34, Odessa 650129 Ukraine

"Odessa Astronomical Publications", v. 26, No.1 (in press) 
http://arxiv.org/abs/1310.5031

A program WWZ is introduced, which realizes the wavelet analysis using an 
improved modification of the algorithm of the Morlet wavelet for a general case 
of irregularly spaced data, which is typical for the databases available in 
virtual observatories. Contrary to the well-known analogs, working with 
regularly spaced (equidistant in time) arguments, we have implemented an 
improved algorithm presented by Andronov, (1998KFNT...14..490A, 
1999sss..conf...57A), which significantly increases the signal-to-noise ratio. 
The program has been used to study semi-regular pulsating variable stars (U Del 
et al.), but can be used for the analysis of signals of any nature.