[A novel method for continuum normalization of astronomical spectrum signals].
A combined method of wavelet transform and spline fitting is presented for continuum fitting with the strong spectral lines taken out beforehand. Some comparisons between normal methods and the method presented are made by the experiments on actual spectra And the experimental results show that our method is superior to others. Besides, an effective continuum revision formula is derived to avoid the appearance of negative continua obtained by some methods such as polynomial fitting and so on.
Zhao
Rui-zhen
RZ
School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China.
Luo
A-li
AL