Transformer based on regression model for the denoising of X-ray pulsar profiles

doi:10.1016/j.asr.2025.05.008

	Transformer based on regression model for the denoising of X-ray pulsar profiles
	Ng, Zhiwei Hua 1; Zong, Hua 1; Ao, Liming 2; Lu, Kunfeng 1; Ie, Yujia 1; Xu, Qian 1
	2025-07-15
发表期刊	ADVANCES IN SPACE RESEARCH
ISSN	0273-1177
卷号	76 期号:2 页码:1068-1079
摘要	To improve noise suppression and adaptability in pulsar observation profile denoising algorithms, this paper proposes a method utilizing a transformer based on regression model. Initially, pulsar photon time-series data are transformed into pulse profiles, followed by standardization and data augmentation. Subsequently, the Conv1d module extracts features directly from observed pulsar profiles and standard profiles, converting profile contextual information into intermediate semantic features. The Transformer module is then employed for deep feature extraction and regression analysis on profile features, resulting in denoised observed profiles. Crab and PSR B1509-58 data from the NICER telescope are used to validate the proposed method. The simulation experiments demonstrate that under the conditions where the observation duration of the Crab pulsar is less than 15 sand that of PSR B1509-58 is below 2500 s, the proposed method achieves average signal-to-noise ratios of 18.7796 dB and 10.1675 dB, average Pearson correlation coefficients of 0.9921 and 0.9482, and average phase offsets of 0.0417 ms and 0.6639 ms, respectively. These results outperform those obtained using wavelet transform denoising and kernel regression denoising methods. (c) 2025 COSPAR. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
关键词	Pulsar profile denoising Transformer X-ray pulsar-based navigation
DOI	10.1016/j.asr.2025.05.008
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Engineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001523513600022
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/42029
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zong, Hua
作者单位	1.Beijing Aerosp Automat Control Inst, Natl Key Lab Sci & Technol Aerosp Intelligent Cont, Beijing 100854, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ng, Zhiwei Hua,Zong, Hua,Ao, Liming,et al. Transformer based on regression model for the denoising of X-ray pulsar profiles[J]. ADVANCES IN SPACE RESEARCH,2025,76(2):1068-1079.
APA	Ng, Zhiwei Hua,Zong, Hua,Ao, Liming,Lu, Kunfeng,Ie, Yujia,&Xu, Qian.(2025).Transformer based on regression model for the denoising of X-ray pulsar profiles.ADVANCES IN SPACE RESEARCH,76(2),1068-1079.
MLA	Ng, Zhiwei Hua,et al."Transformer based on regression model for the denoising of X-ray pulsar profiles".ADVANCES IN SPACE RESEARCH 76.2(2025):1068-1079.