A new method for determination of satellite orbits by transfer |
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Authors: | ZhiGang Li XuHai Yang GuoXiang Ai HuLi Si RongChuan Qiao and ChuGang Feng |
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Institution: | (1) National Time Service Center, Chinese Academy of Sciences, Xi’an, 710600, China;(2) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China;(3) Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030, China |
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Abstract: | The original idea of a new method for determination of satellite orbits by transfer is from Two-Way Satellite Time and Frequency
Transfer (TWSTFT). The original method is called “determination of satellite orbit by transfer”. The method is not only for
determination of satellite orbit but also for the time transfer with high accuracy and precision. The advantage is that the
accuracy and the precision for determination of satellite orbit are very high and the new method is favorable for various
applications. The combination of various signals disseminated and received forms various modes of satellite orbit determinations.
If receivers at stations receive the own station-disseminated signals via a satellite transponder, it forms an orbit determination
mode called “receiving the own station-disseminated signals mode”. If receivers at all stations receive the signals disseminated
from the master station via satellite transponders, it forms an orbit determination mode called “receiving the master station-disseminated
signals mode”. If all of receivers at stations receive all stations-disseminated signals via satellite transponders, it forms
an orbit determination mode called “receiving all stations-disseminated signals mode”. Also there are other combinations of
signals for satellite orbit determination. For different orbit determination modes with different signal combinations, their
rigorous formulae of processing are hereby presented in this paper. The accurate and the precise satellite orbit determination
for both of the modes, “receiving the own station-disseminated signals mode” and “receiving the master station-disseminated
signals mode” is attempted. It shows that the accuracy and precision for both of modes are nearly the same, the ranging accuracy
is better than 1 cm, and the observation residuals of satellite orbit determination are better than 9 cm in the observation
duration of 1 day.
Supported by the National Basic Research and Development Program of China (Grant No. 2007CB815503100453001) |
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Keywords: | TWSTFT transfer satellite orbit determination |
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