中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

Chinese Journal of Space Science ›› 2015, Vol. 35 ›› Issue (4): 502-510.doi: 10.11728/cjss2014.04.502

Previous Articles     Next Articles

Orbit Design for Twin-spacecraft Space VLBI

ZHANG Cheng1, WU Xia2, ZHENG Jianhua2, WU Ji1   

  1. 1. Key Laboratory of Microwave Remote Sensing, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190;
    2. Key Laboratory of Electronics and Information Technology for Space Systems, Center for Space Science andApplied Research, Chinese Academy of Sciences, Beijing 100190
  • Received:2014-06-02 Revised:2015-02-03 Online:2015-06-15 Published:2015-06-30
  • Supported by:

    Supported by the Natural Science Foundation of China (40701100, 40801136) and the Strategic Priority Program on Space Science of the Chinese Academy of Sciences (XDA04060803)

Abstract:

Space Very Long Baseline Interferometry (S-VLBI) is an aperture synthesis technique utilizing an array of radio telescopes including ground telescopes and space orbiting telescopes. It can achieve much higher spatial resolution than that from the ground-only VLBI. In this paper, a new concept of twin spacecraft S-VLBI has been proposed, which utilizes the space-space baselines formed by two satellites to obtain larger and uniform uv coverage without atmospheric influence and hence achieve high quality images with higher angular resolution. The orbit selections of the two satellites are investigated. The imaging performance and actual launch conditions are all taken into account in orbit designing of the twin spacecraft S-VLBI. Three schemes of orbit design using traditional elliptical orbits and circular orbits are presented. These design results can be used for different scientific goals. Furthermore, these designing ideas can provide useful references for the future Chinese millimeter-wave S-VLBI mission.

Key words: VLBI, Twin spacecraft, Orbit design

CLC Number: