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| 題 名 | 衛星軌道對通訊的影響=The Impact of Satellite Orbits on Communications |
|---|---|
| 作 者 | 蔡一飛; 徐美樺; 馮佳音; 吳仁銘; | 書刊名 | 前瞻科技與管理 |
| 卷 期 | 13:2 2025.05[民114.05] |
| 頁 次 | 頁18-38 |
| 分類號 | 448.79 |
| 關鍵詞 | 低軌衛星; 非地面網路; 軌道六元素; 衛星星系; 6G; LEO satellite; Non-terrestrial network; NTN; Six orbital elements; Satellite constellation; |
| 語 文 | 中文(Chinese) |
| DOI | 10.6193/JATM.202505_13(2).0002 |
| 中文摘要 | 隨著可回收火箭技術的發展,人造衛星成為全球標準通訊系統的重要載具。低軌衛星作為6G非地面網路的關鍵組成,對縮小數位落差、提供偏遠地區及發展中國家網路服務具重要意義。本文探討不同的軌道參數如何影響衛星通訊的訊號延遲、覆蓋範圍與服務品質。首先介紹軌道六元素,闡述這些參數如何影響衛星的軌道特性與通訊系統的設計考量,並指出低軌衛星須面對的技術挑戰,例如都卜勒效應導致的動態頻率偏移控制,以及衛星接力換手機制的複雜性。本文除分析現有衛星通訊服務商如OneWeb及Starlink不同星系軌道設計外,亦探討國際標準組織3GPP(3rd Generation Partnership Project)對衛星通訊的相關技術規範。此外透過電腦模擬分析,顯示軌道傾角與通訊仰角對低軌衛星星系的部署策略影響顯著。 |
| 英文摘要 | With the advancement of reusable rocket technology, artificial satellites are becoming crucial vehicles for global standard communication systems. Low Earth Orbit (LEO) communication satellites, as a key component of 6G Non-Terrestrial Networks (NTN), play a significant role in bridging the digital divide and providing network services to remote areas and developing countries. This paper explores the impact of satellite orbits on communication performance, analyzing how different orbital parameters affect signal latency, coverage area, and service quality. First, the paper introduces the six orbital elements and explains how these parameters influence satellite orbital characteristics and communication system design considerations. It also highlights the technical challenges faced by LEO satellite communications, such as dynamic control of frequency offset caused by the Doppler effect and the complexity of satellite handover mechanisms. In addition to analyzing the orbital designs of existing satellite communication service providers such as OneWeb and Starlink, this paper examines the technical standards related to satellite communications established by international standardization organizations like 3GPP. Furthermore, computer simulations demonstrate that orbital inclination and communication elevation angles have a significant impact on LEO satellite constellation deployment strategies. |
本系統中英文摘要資訊取自各篇刊載內容。