Mr. Zhengyu Zou Profile

Zhengyu Zou

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Proceedings Article | 2 December 2020 Paper

Research on the single event effect of CCD analog front-end for satellite-borne directional polarization camera

Pingping Yao, Zhengyu Zou, Zhilong Xu, Donggen Luo, Jin Hong

Proceedings Volume 11717, 117171J (2020) https://doi.org/10.1117/12.2586826

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The directional polarimetric camera (DPC) is a satellite sensor with the aim to observe the polarization and directionality of the earth’s reflectance, developed by Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences. The analog front-end signal processor is the key to realize the conversion from the analog input signal of the front-end CCD image to the digital processing signal of the back-end. Its performance directly determines the image quality of the instrument. In this paper, the single particle locking effect of the CCD analog front-end signal processor of the Directional Polarization camera after being irradiated by high-energy particles is studied, the test scheme and the test system composition of the single particle locking effect are introduced, and the dynamic working current of the device and the change rule of the dynamic output digital code signal and other parameters are analyzed. The experimental results show that when the LET threshold of high-energy particles is greater than 13.4 MeV•cm²•mg-1, the dynamic working current of the analog front-end signal processor increases significantly, the dynamic output digital code cannot change with the change of the input signal, and single particle locking occurs in the chip. These research results provide significant reference data for in-depth study of single particle locking protection of analog front-end signal processor in space application environment.

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