Open AccessInfluence of digital averaging on the signal-to-noise improvement ratio of temperature control system used in single-photon detector at infrared wavelength
Author(s) -
Jin Wang,
Zhengjun Wei,
Geng Wang,
Guo Li,
Jindong Wang,
Zhiming Zhang,
Jianping Guo,
Banghong Guo,
Songhao Liu
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.014203
Subject(s) - detector , sampling (signal processing) , optics , bandwidth (computing) , wavelength , signal (programming language) , noise (video) , physics , materials science , computer science , telecommunications , artificial intelligence , image (mathematics) , programming language
According to performance requirement of high precision temperature control system used in single-photon detector, the signal-to-noise improvement ratio (SNIR) achieved by digital averaging used in it is analyzed, and the functional relation between SNIR and average times, sampling period, length of sampling time and bandwidth of band limited white noise is given. Aiming at practical application, on condition that the total sampling time is limited, the influences of average time and sampling period on the SNIR of the system are calculated respectively, the expression of SNIR is given and the optimal sampling time is defined.