학술논문

Wavelet Analysis of RTS Noise in CMOS Image Sensors Irradiated With High-Energy Photons.
Document Type
Article
Source
IEEE Transactions on Nuclear Science. Jul2020, Vol. 67 Issue 7, p1732-1737. 6p.
Subject
*CMOS image sensors
*WAVELETS (Mathematics)
*PHOTONS
*SIGNAL reconstruction
*NOISE
*OPTICALLY stimulated luminescence
Language
ISSN
0018-9499
Abstract
This article explores the phenomenon of dark current random telegraph signal (DC-RTS) noise in commercial off-the-shelf CMOS image sensors. Five sensors were irradiated with high-energy photons to a variety of doses and analyzed with a wavelet-based signal reconstruction algorithm. The algorithm is explained in detail and the radiation effects on individual pixels are discussed. Finally, the production rate of RTS pixels as a function of dose is explored, providing information on the underlying defect structure responsible for this noise source. [ABSTRACT FROM AUTHOR]