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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국우주과학회 Journal of Astronomy and Space Sciences Journal of Astronomy and Space Sciences 제37권 제4호
- 발행연도
- 2020.1
- 수록면
- 219 - 228 (10page)
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초록· 키워드
오류제보하기
A CubeSat platform has become a popular choice due to inexpensive commercial off-the-shelf (COTS) components and low launch cost. However, it requires more power-efficient and higher-data rate downlink capability for space applications related to remote sensing. In addition, the platform is limited by the size, weight and power (SWaP) constraints as well as the regulatory issue of licensing the radio frequency (RF) spectrum. The requirements and limitations have put optical communications on promising alternatives to RF communications for a CubeSat platform, owing to the power efficiency and high data rate as well as the license free spectrum. In this study, we analyzed the performance of optical downlink communications compatible with CubeSat platforms in terms of data rate, bit error rate (BER) and outage probability. Mathematical models of BER and outage probability were derived based on not only the log-normal model of atmospheric turbulence but also a transmitter with a finite extinction ratio. Given the fixed slot width, the optimal guard time and modulation orders were chosen to achieve the target data rate. And the two performance metrics, BER and outage data rate, were analyzed and discussed with respect to beam divergence angle, scintillation index and zenith angle.
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참고문헌 (21)
참고문헌 신청
Carrasco-Casado A / 2017 / Optical communication on CubeSats: Enabling the next era in space science / Proceeding of 2017 International Conference on Space Optical Systems and Applications
Emily Clements / 2016 / Nanosatellite optical downlink experiment: design, simulation, and prototyping / Optical Engineering 55(11):111610
Franco Davoli / 2018 / Small satellites and CubeSats: Survey of structures, architectures, and protocols / International Journal of Satellite Communications and Networking 37(4):343~359
Degnan JJ / 1993 / Millimeter accuracy satellite laser ranging : a review / Geodynamics 25:133~162
Devaraj K / 2017 / Dove high speed downlink system / Proceedings of the 31th Annual AIAA/USU Conference on Small Satellites
Emily Clements / 2016 / Nanosatellite optical downlink experiment: design, simulation, and prototyping / Optical Engineering 55(11):111610
Franco Davoli / 2018 / Small satellites and CubeSats: Survey of structures, architectures, and protocols / International Journal of Satellite Communications and Networking 37(4):343~359
Degnan JJ / 1993 / Millimeter accuracy satellite laser ranging : a review / Geodynamics 25:133~162
Devaraj K / 2017 / Dove high speed downlink system / Proceedings of the 31th Annual AIAA/USU Conference on Small Satellites
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