Two-way ranging and communication between satellites by inter-satellite link (ISL) is an important innovative design of BDS-3, which can make up for the disadvantage of regionally distributed network and realize the tracking and measurement for the whole arc of navigation satellites. By introducing ISL measurements into orbit determination processing, the orbit accuracy can be effectively improved. The influence of ISL measurement geometry on satellite orbit determination accuracy is evaluated. Taking the post-processed satellite orbit solutions provided by IGS as references, the orbit accuracy of BeiDou satellites under different conditions is evaluated. The results show that in the case no ISL measurements, the user ranging error (URE) of satellite orbit is about 0.3 m. With all ISLs used, the orbital URE is below 0.08 m. Then, the influence of the number of the ISLs on orbit determination accuracy is further investigated. The results show that when the number of ISLs between satellites is reduced by 17%, 24% and 40%, respectively, the accuracy loss of orbit in radial component is only at millimeter level, and the loss in tangential and normal component is at centimeter level, thus the accuracy loss can be neglected. Even if a satellite has only two ISLs, the orbital URE is only increased to 12 cm, which indicates that the satellite orbit can still maintain relatively high accuracy in the case of only a few links. This provides a reference for the operator to formulate the plan of ISL.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Influence of Inter-satellite Link Geometry on Orbit Determination Accuracy for BDS-3


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Yang, Changfeng (editor) / Xie, Jun (editor) / Su, Chengeng (author) / Zhang, Gong (author) / Lu, Jun (author)


    Publication date :

    2022-05-05


    Size :

    11 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





    The Accuracy Analysis of Autonomous Orbit Determination Based on Onboard Observation Data of Inter-Satellite Link

    Chang, Jiachao / Shang, Lin / Li, Guotong | British Library Conference Proceedings | 2016



    Research on Autonomous Orbit Determination Test Based on BDS Inter-Satellite-Link on-Orbit Data

    Wang, Haiong / Chen, Qiuli / Jia, Weisong et al. | British Library Conference Proceedings | 2017


    THE ACCURACY OF SATELLITE ORBIT DETERMINATION

    MAXWELL, JAMES / DORFMAN, MERLIN | AIAA | 1963