http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Michael H. Sanders (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Jin S. Kang,Jeffery T. King,Christopher R. Anderson,Michael H. Sanders 한국항공우주학회 2022 International Journal of Aeronautical and Space Sc Vol.23 No.4
As CubeSats have become hugely popular in the recent years, the demand on their capability has also increased. As the missions and functionalities become more complex, coupled with the popular VHF and UHF bands becoming less accessible, CubeSats have been getting pushed into using higher frequency bands. For more capable CubeSats such as NASA and military satellites, utilization of S- and X-band communication have become a common place. While S- and X-band communication provide much higher data rate for the mission, the power and attitude control demand has also increased. Meeting this increased cost and demand on resources may not be feasible for university-level projects as attitude control systems can often cost more than the rest of the CubeSat. This research revisits passive magnetic pointing as an option for providing antenna pointing capability for CubeSats, enabling S- and X-band communication without requiring an active attitude control system. CubeSats can make contact with ground stations located at higher latitude to establish data link with directional antennas. The analyses shows that a higher data throughput can be achieved using S- and X-band communication over the traditional 9600 bps link with the proposed setup, without requiring active attitude control or deployable solar panels. The study characterizes the expected communication link performance for a typical 3U CubeSat when implementing the proposed communication architecture using a S- or X-band patch antenna taking into consideration the expected pointing performance and power generation capability of a 3U CubeSat.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
