The noise reduction algorithm for star detection

Razaman, Anis Hannani and Ahmad, Yasser Asrul and Gunawan, Teddy Surya and Khalifa, Othman Omran and Saidin, Norazlina (2025) The noise reduction algorithm for star detection. PERINTIS eJournal, 15 (2). pp. 37-46. E-ISSN 2232-0725

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Abstract

Accurate star detection plays a critical role in star sensors for spacecraft attitude determination. However, various sources of noise such as cosmic radiation and sensor imperfections can degrade the accuracy of star centroid estimation. This paper presents a noise reduction algorithm that enhances the detection of star blobs in noisy star images. The proposed method integrates feature extraction through differential smoothing with adaptive thresholding techniques to effectively separate true star signals from background noise. To validate the algorithm, synthetic star images with different noise levels were tested. The results show that the proposed algorithm consistently detects all 20 target stars, achieving high detection accuracy even under severe noise conditions, outperforming conventional Laplacian of Gaussian (LoG) and Difference of Gaussian (DoG) approaches. This improvement in denoising leads to more precise centroid extraction, contributing to more reliable star sensor performance for space navigation applications

Item Type:	Article (Journal)
Uncontrolled Keywords:	Star detection; noise reduction; centroiding algorithm; adaptive thresholding; space navigation
Subjects:	Q Science > QB Astronomy T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices > TK7885 Computer engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering Kulliyyah of Engineering
Depositing User:	Dr Ir Yasser Asrul Ahmad
Date Deposited:	03 Feb 2026 09:27
Last Modified:	03 Feb 2026 09:27
Queue Number:	2026-01-Q1931
URI:	http://irep.iium.edu.my/id/eprint/127176

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