{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T02:10:49Z","timestamp":1783390249988,"version":"3.54.6"},"reference-count":33,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2024,12,21]],"date-time":"2024-12-21T00:00:00Z","timestamp":1734739200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We analyze the communication link of an LEO satellite considering interference sources moving along various parabola-curved paths. In this situation, the location of the ground station, airborne interference source paths, and the satellite\u2019s trajectory were expressed in the East-North-Up (ENU) coordinate system. The airborne interference source path is designed using a parabola equation with a directrix parallel to the satellite\u2019s trajectory to analyze the interference situation for more diverse interference source paths, rather than using a straight path. To investigate critical interference situations where the J\/S ratio is maintained above \u221220 dB with a small deviation during the communication time, we investigate interference situations by changing the parameters of the interference source path. The genetic algorithm (GA) is used to easily find an airborne interference source path that maintains the J\/S ratio above \u221220 dB with a small deviation. A cost function for the GA is then defined as the average difference between the J\/S ratio and the reference value (\u221210 dB and \u221220 dB) during the communication time. The optimum parameters of the interference source path are determined at a minimum cost in the GA. These results demonstrate that more significant interference situations for the communication link can be easily found by using parabola-curved paths and the GA. As a result, previous studies investigated the basic tendency of the J\/S ratio using straight paths. However, this study provides a database for operating an anti-jamming system based on the obtained optimized path.<\/jats:p>","DOI":"10.3390\/s24248185","type":"journal-article","created":{"date-parts":[[2024,12,23]],"date-time":"2024-12-23T10:58:55Z","timestamp":1734951535000},"page":"8185","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Communication Link Analysis of a Low-Earth Orbit Satellites Considering Interference Sources Moving Along Various Parabola-Curved Paths"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-5579-4122","authenticated-orcid":false,"given":"Hyunmu","family":"Kang","sequence":"first","affiliation":[{"name":"Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eunjung","family":"Kang","sequence":"additional","affiliation":[{"name":"Missile Research Institute, Agency for Defense Development, Daejeon 34186, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8409-6964","authenticated-orcid":false,"given":"Hosung","family":"Choo","sequence":"additional","affiliation":[{"name":"Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1109\/JOE.1980.1145459","article-title":"An initial assessment of the performance achieved by the Seasat-1 radar altimeter","volume":"5","author":"Townsend","year":"1980","journal-title":"IEEE J. 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