Journal of Astronautics ›› 2020, Vol. 41 ›› Issue (11): 1434-1439.doi: 10.3873/j.issn.1000-1328.2020.11.009

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TDRS SMA for Spacecraft On Orbit Control

CAO Zheng rui, SUN Bao sheng, YAO Yan jun, HE Chao   

  1. 1. Beijing Institute of Tracking and Telecommunication, Beijing 100094, China;2. Beijing Space Information Relay and  Transmission Technology Centre, Beijing 100094, China;3. The Thirty eighth Research Institute of CETC, Hefei 230000, China
  • Received:2019-10-29 Revised:2020-02-18 Online:2020-11-15 Published:2020-11-24


Based on the requirement of spacecraft on orbit control at anytime and anywhere, a control mode using tracking and data relay satellite (TDRS) S band multiple access (SMA) is designed in this paper. And digital beam forming (DBF) technologies, all sighted beam covering and communications protocols are researched. The results show that the all sighted beam system formed by overlapping 1.5 dB is reasonable, communications protocols of short messages and continuous services can meet the demands of data transmission, all the link budget margins exceed 3 dB, and one TDRS can provide short message services for all of 1000 users. It is highly possible in actual to control LEO and MEO spacecraft at anytime and anywhere by TDRS SMA.

Key words: Tracking and data relay satellite (TDRS), S band multiple access (SMA), Spacecraft, On orbit control; All sighted beam

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