Ho, Steven (2018) Wavelet transform of mid-IR spectra of protoplanetary disks and water slab models. Bachelor's Thesis, Astronomy.
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Abstract
Aims: We aim to use wavelet transform to de-noise a spectral emission, thus disentangling spectral features from the noise, and automatically determine the continuum location. Methods: The multi-scale ´a’trous algorithm using a B3 cubic spline was used to wavelet transform the signal. De-noising was performed with hard threshold filtering which eliminates any wavelet coefficients below a certain noise threshold. Conclusions: The wavelet transform works well within limitations, both de-noising spectra and recovering the continuum location. However, it should first be compared to other methods to evaluate its effectiveness and efficiency.
| Item Type: | Thesis (Bachelor's Thesis) |
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| Supervisor name: | Kamp, I.E.E. |
| Degree programme: | Astronomy |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 16 Jul 2018 |
| Last Modified: | 07 Aug 2018 10:56 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/17891 |
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