Research on inter-satellite measurement technique in high dynamic environment |
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Authors: | WANG Yong-qing SUN Li-d YANG Li-yun JIANG Hong-wei and WU Si-liang |
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Affiliation: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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Abstract: | An improved measurement algorithm, based upon the theory of two-way time transfer (TWTT), is proposed to measure satellites with high speeds. The algorithm makes theoretical analyses and corresponding deductions on a relative motion model of two satellites, and eliminates the measurement error caused by the equipment delay when a satellite moves at a high speed. Theoretical analysis and simulation results demonstrate that in comparison with the conventional TWTT algorithm, the proposed algorithm can significantly enhance the measurement accuracy of the inter-satellite ranging and time synchronization, and the algorithm is more effective with the relative velocity between the satellites and transmitting delay becoming larger. |
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Keywords: | two-way time transfer ranging time synchronization measurement accuracy |
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