Study on effect of polarization for improving signal noise ratio of stellar objects in daytime

Rui-jin Zhang; Hao Xian; Kai Wei; Chang-hui Rao

doi:10.1117/12.900754

8 September 2011 Study on effect of polarization for improving signal noise ratio of stellar objects in daytime

Rui-jin Zhang, Hao Xian, Kai Wei, Chang-hui Rao

Proceedings Volume 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies; 81911M (2011) https://doi.org/10.1117/12.900754
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

Sky background is one of the main noise sources in astronomy observation. Most of the telescopes work well in nighttime with low sky background, but do not work anymore in daytime with strong sky background. Polarization filtering is a critical method that can be used to suppress the sky background and improve the signal noise ratio (SNR) of object signal. Experimental device with polarization filtering technology was constructed in 1.8m adaptive optics (AO) telescope of Yunnan observatory, to identify the effect of polarization filtering technology. Experimental results indicate that the SNR (ratio of object energy to noise's mean square deviation) of stellar objects could be improved to 1 to 3 times at different observation conditions, which is significative to star detection in daytime. Experimental results also indicate that polarization filtering technology is effective and important in observing different kinds of stellar objects in daytime condition. Furthermore, it also makes it possible to apply our AO system in daytime in future.

Citation Download Citation

Rui-jin Zhang, Hao Xian, Kai Wei, and Chang-hui Rao "Study on effect of polarization for improving signal noise ratio of stellar objects in daytime", Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 81911M (8 September 2011); https://doi.org/10.1117/12.900754

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polarization

Signal to noise ratio

Stars

Adaptive optics

Interference (communication)

Digital filtering

Electronic filtering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years