Abstract
BD-3 navigation satellite system uses the Ka Inter-satellite Link (ISL) technology. The accuracy of the distances between satellites is one of important parameters for autonomous navigation, which depends on the accuracy of the time delay of devices at both ends of ISL. However, because of the dispersion effect of RF channel and antenna, it is difficult to accurately give the time delay by traditional group delay measurement. In this paper, the Phase Spectrum Integration (PSI) method for pseudorange delay testing adapted for dispersive network is given. Then, taking the Ka reflector ISL antenna as an example, the pseudorange delay of this antenna is obtained by the PSI and other methods. The result shows the PSI method improves the accuracy of pseudorange delay measurement and meets the requirements of the in orbit application directly for ISL ranging.
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Zhuang, J., Zhang, J., Kang, C., Li, Z., Liu, Z. (2021). The Dispersion Effect of Pseudo-noise Ranging and Time Delay Measurement for Ka Inter-satellite Link. In: Yang, C., Xie, J. (eds) China Satellite Navigation Conference (CSNC 2021) Proceedings. Lecture Notes in Electrical Engineering, vol 773. Springer, Singapore. https://doi.org/10.1007/978-981-16-3142-9_32
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DOI: https://doi.org/10.1007/978-981-16-3142-9_32
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