Link Budget Analysis for Inter-Satellite FSO Links with Comprehensive Pointing-Error Models 


Vol. 50,  No. 12, pp. 1872-1883, Dec.  2025
10.7840/kics.2025.50.12.1872


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  Abstract

In this paper, we investigate the impact of the jitter due to misalignment between the transmitter and the receiver on the link budget in free-space optical (FSO) inter-satellite link (ISL) in Low-Earth-Orbit (LEO) satellite communication systems. We first classify six different pointing-error radial displacement models based on the diverse characteristics of boresight and jitter. Then using the relationship between pointing-error radial displacement and pointing error, we derive the corresponding probability density functions (PDFs). Next, we determine a realistic ISL distance by applying a specific SpaceX Starlink constellation model. Finally, utilizing these results, we analyze the ISL link budget using closed-form and Monte Carlo simulation methods over varying jitter levels under a given power constraint.

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[IEEE Style]

J. Suh and Y. Ko, "Link Budget Analysis for Inter-Satellite FSO Links with Comprehensive Pointing-Error Models," The Journal of Korean Institute of Communications and Information Sciences, vol. 50, no. 12, pp. 1872-1883, 2025. DOI: 10.7840/kics.2025.50.12.1872.

[ACM Style]

Jung-min Suh and Young-Chai Ko. 2025. Link Budget Analysis for Inter-Satellite FSO Links with Comprehensive Pointing-Error Models. The Journal of Korean Institute of Communications and Information Sciences, 50, 12, (2025), 1872-1883. DOI: 10.7840/kics.2025.50.12.1872.

[KICS Style]

Jung-min Suh and Young-Chai Ko, "Link Budget Analysis for Inter-Satellite FSO Links with Comprehensive Pointing-Error Models," The Journal of Korean Institute of Communications and Information Sciences, vol. 50, no. 12, pp. 1872-1883, 12. 2025. (https://doi.org/10.7840/kics.2025.50.12.1872)
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pISSN : 1226 - 4717
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