Impact of proton radiation and annealing of CMOS image sensors on star sensor performance
Source abstract
Abstract
Star sensors play a crucial role as high-precision optical attitude navigation devices in satellite attitude control systems. The CMOS image sensor is an important component of the imaging system of the star sensor and experiences performance degradation due to the total ionizing dose effect and displacement damage effect in the radiation environment of its long-term operational workspace. As a result, the detection capability and attitude positioning accuracy of the star sensor gradually deteriorate. The performance of CMOS image sensors can be partially restored after annealing but the impact on the performance of star sensors is unclear. This study conducted 100 MeV proton irradiation experiments with different fluences on CMOS image sensors and performed room temperature and high temperature annealing treatments. By testing and analyzing the performance of star sensors equipped with irradiated and different annealing treatments on CMOS image sensors, the impact mechanism of CMOS image sensor radiation damage and annealing recovery on the performance variation of star sensors was obtained. This study provides theoretical support for reliability of long-term in-orbit star sensors.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: CCD and CMOS Imaging Sensors · Astronomical Observations and Instrumentation · Stellar, planetary, and galactic studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Xinjiang Technical Institute of Physics and Chemistry 1 , Urumqi 830011,
State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions, Xinjiang Key Laboratory of Extreme Environment Electronics 2 , Urumqi 830011,
University of Chinese Academy of Sciences 3 , Beijing 100049,
Funding
National Natural Science Foundation of China · West Light Talent Training Plan of the Chinese Academy of Sciences · Youth Science and Technology Talents Project of Xinjiang Uygur Autonomous
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