Noise Reduction in Astronomical Spectra: A New Wavelet-Based Method
Abstract
We present a wavelet technique to de-noise astronomical spectra based on non-orthogonal wavelet packets and compare it to Fourier-smoothing and other wavelet-based de-noising algorithms. It is found to give better results than any other tested de-noising algorithm and is particularly successful in recovering weak signals that are practically drowned by the noise.
- Publication:
-
Cool Stars, Stellar Systems, and the Sun
- Pub Date:
- 1998
- Bibcode:
- 1998ASPC..154..833F
- Keywords:
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- SPECTRA;
- WAVELETS;
- DATA SMOOTHING;
- SIGNAL PROCESSING