The Influence of the Apodization Function on the Optical Needle

Author(s):  
Jian Fu ◽  
Ruimin Cao ◽  
Lihui Wang
Keyword(s):  
2015 ◽  
Vol 11 (A29A) ◽  
pp. 205-207
Author(s):  
Philip C. Gregory

AbstractA new apodized Keplerian model is proposed for the analysis of precision radial velocity (RV) data to model both planetary and stellar activity (SA) induced RV signals. A symmetrical Gaussian apodization function with unknown width and center can distinguish planetary signals from SA signals on the basis of the width of the apodization function. The general model for m apodized Keplerian signals also includes a linear regression term between RV and the stellar activity diagnostic In (R'hk), as well as an extra Gaussian noise term with unknown standard deviation. The model parameters are explored using a Bayesian fusion MCMC code. A differential version of the Generalized Lomb-Scargle periodogram provides an additional way of distinguishing SA signals and helps guide the choice of new periods. Sample results are reported for a recent international RV blind challenge which included multiple state of the art simulated data sets supported by a variety of stellar activity diagnostics.


1992 ◽  
Vol 56 (4) ◽  
pp. 397-401
Author(s):  
D. K. Buslov ◽  
N. A. Nikonenko ◽  
R. G. Zhbankov

2004 ◽  
Author(s):  
Fangcheng Yang ◽  
Kai Zheng ◽  
Zhongwei Tan ◽  
Shuisheng Jian
Keyword(s):  

1985 ◽  
Author(s):  
J. Y. Dong ◽  
Z. Z. Li
Keyword(s):  
Ft Ir ◽  

1987 ◽  
Vol 41 (8) ◽  
pp. 1362-1370 ◽  
Author(s):  
D. I. James ◽  
W. F. Maddams ◽  
P. B. Tooke

Studies with synthetic single-peak systems have provided information on a range of factors capable of limiting the utility of Fourier deconvolution for peak finding in vibrational spectra. The merits of six apodization functions for controlling Gibbs oscillations resulting from truncation and background effects have been determined. The triangularsinc and triangular-squared functions are the most effective, and the Gaussian function is the least satisfactory. The presence of asymmetry and a degree of Gaussian character in the band shape should not prove a serious limitation for most qualitative and quantitative applications. The peak heights following deconvolution are linear functions of the resolution enhancement factor, K, the constant of proportionality being determined by the particular apodization function employed. By contrast, the areas of deconvoluted bands are sensibly independent of the apodization function. This factor opens the way to quantitative studies on deconvoluted band systems.


2020 ◽  
Vol 40 (3) ◽  
pp. 0307001
Author(s):  
邓竞蓝 Deng Jinglan ◽  
童晶晶 Tong Jingjing ◽  
高闽光 Gao Minguang ◽  
李相贤 Li Xiangxian ◽  
李妍 Li Yan ◽  
...  

2012 ◽  
Vol 41 (7) ◽  
pp. 878-882
Author(s):  
张鹏 ZHANG Peng ◽  
张志辉 ZHANG Zhihui
Keyword(s):  

2012 ◽  
Vol 41 (7) ◽  
pp. 878-882
Author(s):  
张鹏 ZHANG Peng ◽  
张志辉 ZHANG Zhihui
Keyword(s):  

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