Radiation noise suppression and dose information extraction method based on FPGA

doi:10.16265/j.cnki.issn1003-3033.2025.03.1820

Abstract

Abstract:

In order to improve and advance the nuclear radiation detection and monitoring integrated technology based on pixel sensors, a radiation noise suppression and nuclear detection method leveraging the parallel advantages of FPGA was proposed, with corresponding programs developed. By analyzing the characteristics of radiation noise signals, radiation noise suppression and two-dimensional wavelet transform programs based on FPGA were developed to output clear radiation field images. The images were decomposed into horizontal, vertical, and diagonal components, and the results of linear fitting statistics for each component were investigated to identify the component with the best linear fit. The research results demonstrate that the FPGA program modules effectively execute radiation noise suppression and nuclear detection functions in images. After noise reduction, the peak signal-to-noise ratio(PSNR) of the images is improved by approximately 11 dB. The diagonal component is shown to best characterize the radiation response information of the images, achieving a linearity of 0.99624 in linear fitting for different dose rates.

Key words: field programmable gate array (FPGA), radiated noise, noise suppression, dose information extraction, complementary metal oxide semiconductor (CMOS), two-dimensional wavelet transform

CLC Number:

X945

XU Shoulong, HOU Zhixiong, WEI Cuiyue, ZOU Shuliang. Radiation noise suppression and dose information extraction method based on FPGA[J]. China Safety Science Journal, 2025, 35(3): 85-91.

Figures/Tables 9

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分量	截距		斜率		R²
分量	值	标准误差	值	标准误差	R²
水平	6 510.093 68	312.472 68	27.725 5	1.798 39	0.983 38
垂直	6 745.975 18	933.113 11	23.010 09	5.370 4	0.812 72
对角	293.553 17	112.116 11	21.030 61	0.645 27	0.996 24