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Title:
Exponential Polynomial Fitting for Fibre Spectrum CCD Profiles
Authors:
Zhu, Zhangqin; Zhu, Jia; Qin, Hanqin; Wang, Chong; Ye, Zhongfu
Affiliation:
AA(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China), AB(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China), AC(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China), AD(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China), AE(Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China )
Publication:
Publications of the Astronomical Society of Australia, Volume 27, Issue 3, pp. 290-295. (PASA Homepage)
Publication Date:
06/2010
Origin:
PASA
Astronomy Keywords:
line: profiles, methods: data analysis, techniques: spectroscopic
Abstract Copyright:
(c) 2010 Astronomical Society of Australia
DOI:
10.1071/AS09075
Bibliographic Code:
2010PASA...27..290Z

Abstract

A fibre spectrum profile fitting method based on the least-squares method is presented in this article. For each spectrum of one fibre in spatial orientation, two exponential functions are employed to approximate the profile. Experiments are performed with both simulated profiles and observed profiles to demonstrate the effectiveness of the algorithm. Specially, the proposed method has a better performance for profiles that are asymmetric or composed of multi-Gaussian functions.
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