Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (5): 84-89.doi: 10.13474/j.cnki.11-2246.2023.0141

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Tracking methods of space station based on SGP4 model

WANG Xiao1,2, LI Weichao1,2, YANG Xuhai1,2,3, QIN Weijin1,2, WANG Wei1,2, LI Zhigang1,2   

  1. 1. National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China;
    2. Key Laboratory of Precise Positioning and Timing Technology, National Time Services Center, Chinese Academy of Sciences, Xi'an 710600, China;
    3. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-06-13 Published:2023-05-31

Abstract: The successful launch of the Core Module of China Space Station marks that the on-orbit assembly and construction of the China Space Station has entered the stage of full implementation.When the China Space Station entered the predetermined orbit,it is the premise for obtaining scientific data that realizing the tracking observation of the ground station to the China Space Station.The calculational algorithm that the tracking angle of the China Space Station observed by ground station is studied based on existing SGP4 model according to the two line orbital elements of the China Space Station in this paper.And compute the tracking angle of the Xi'an station to observe the China Space Station,the difference is less than 0.001 degrees compared with the results by STK software,Which proves the correctness of the calculational algorithm.Furthermore,the effective prediction time of two line orbital elements is studied on aforementioned basis.All results above provide the support for the ground station to observe low-orbit targets such as the China Space Station.

Key words: China Space Station, SGP4 model, coordinate system, azimuth

CLC Number: