Hostname: page-component-848d4c4894-nr4z6 Total loading time: 0 Render date: 2024-06-04T09:05:25.123Z Has data issue: false hasContentIssue false
  • English
  • Français

Signal design and performance analysis for LEO high dynamic navigation application

Published online by Cambridge University Press:  13 May 2024

Lei Wang ,
Jibin Che  and
Haoyan Chen
Lei Wang
Affiliation:
Institute of System Engineering, AMS, Beijing, China
Jibin Che*
Affiliation:
Xidian University, Xi'an, China
Haoyan Chen
Affiliation:
Institute of System Engineering, AMS, Beijing, China
*
*Corresponding author: Jibin Che; Email: grantche@163.com
Get access Rights & Permissions [Opens in a new window]

Abstract

With the development of GNSS (Global Navigation Satellite System), LEO (Low Earth Orbit) systems are adopted to enhance the system performance of GNSS. The signal Doppler of the LEO satellite is seven to nine times that of GNSS signals, which benefits positioning performance but leads to high acquisition complexity. This paper proposes the combination of a CSS (Chirp Spread Spectrum) marker and the main body of traditional modulation methods for high dynamic application. The acquisition calculation complexity and mean acquisition time of the proposed signal are analysed and compared with the traditional signal. The result shows that the acquisition calculation complexity is just 26 % of the traditional signal under the parameters considered and the mean acquisition time of the proposed signal is also lower than the traditional signal. Hence, the proposed signal is able to decrease the mean acquisition time of the receiver under the constraint of calculation complexity and should be adopted for LEO high dynamic application.

Keywords

LEOsignal designhigh dynamicCSSmean acquisition time
Type
Research Article
Information
The Journal of Navigation , First View , pp. 1 - 10
Check for updates
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of The Royal Institute of Navigation

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

China Satellite Navigation Office. (2023). BeiDou Navigation Satellite System Open Service Performance Standard. Available at https://www.beidou.gov.cn (accessed January 2023).Google Scholar
Enge, P., Bart, F., Jeff, B., David, W., Greg, G. and David, L. (2012). Orbital Diversity for Satellite Navigation. Proceedings of the 25th International Technical Meeting of the Satellite Division of the Institute of Navigation, Nashville, TN, 3834–3846.Google Scholar
Iannucci, P. A. and Humphreys, T. E. (2020). Economical Fused LEO GNSS. 2020 IEEE/ION Position, Location and Navigation Symposium (PLANS), 426–443.CrossRefGoogle Scholar
IS-GPS-200. (2023). NAVSTAR GPS Space Segment/Navigation User Segment Interfaces. Available at https://www.gps.gov (accessed January 2023).Google Scholar
IS-GPS-705 (2023). Navstar GPS Space Segment/ User Segment L5 Interfaces. Available at https://www.gps.gov (accessed January 2023).Google Scholar
IS-GPS-800 (2023). NAVSTAR GPS Space Segment/ User Segment L1C Interfaces. Available at https://www.gps.gov (accessed January 2023).Google Scholar
Jiang, M. Y., Qin, H. L., Zhao, C. and Sun, G. Y. (2022). LEO Doppler-aided GNSS position estimation. GPS Solutions, 26, 31–48.CrossRefGoogle Scholar
Joerger, M. (2009). Carrier Phase GPS Augmentation using Laser Scanners and using Low Earth Orbiting Satellites. Dissertations, Illinois Institute of Technology. Chicago.Google Scholar
Kadlimatti, R. and Fam, A. T. (2016). Doppler Detection for Linear FM Waveform Using Extended Matched Filter. IEEE Radar Conference, Philadelphia, PA.CrossRefGoogle Scholar
Li, H., Li, Y., Peng, W. and Wen, B. (2012). A Novel algorithm for the weak GPS signals acquisition. The 2nd International Conference on Computer Application and System Modeling, 738–741.CrossRefGoogle Scholar
Li, M., Xu, T., Guan, M., Gao, F. and Jiang, N. (2022). Leo-constellation-augmented multi-GNSS real-time PPP for rapid re-convergence in harsh environments. GPS Solutions, 26(1), 1–12.CrossRefGoogle Scholar
Liu, Q., Kou, Y., Huang, Z., Wang, J. and Yao, Y. (2019). Mean acquisition time analysis for GNSS parallel and hybrid search strategies. GPS Solutions, 23(94), 94–107.CrossRefGoogle Scholar
Meng, Y., Bian, L., Han, L., Lei, W. Y., Yan, T., He, M. and Li, X. X. (2018). A Global Navigation Augmentation System Based on LEO Communication Constellation. 2018 European Navigation Conference, Gothenburg.CrossRefGoogle Scholar
Park, S. H., Choi, I. H., Lee, S. J. and Kim, Y. B. (2002). A Novel GPS Initial Synchronization Scheme Using Decomposed Differential Matched Filter. Proceedings of the 2002 National Technical Meeting of The Institute of Navigation. San Diego, CA: ION, 246–253.Google Scholar
Qian, Y., Ma, L. and Liang, X. (2019). The acquisition method of symmetry chirp signal used in LEO satellite internet of things. IEEE Communications Letters, 23(9), 1572–1575.CrossRefGoogle Scholar
Vangelista, L. (2017). Frequency shift chirp modulation: The lora modulation. IEEE Signal Processing Letters, 24(12), 1818–1821.CrossRefGoogle Scholar
Wang, L., Chen, R., Li, D., Zhang, G., Shen, X., Yu, B. G., Wu, C. L., Xie, S., Zhang, P., Li, M. and Pan, Y. J. (2018). Initial assessment of the LEO based navigation signal augmentation system from luojia-1A satellite. Sensors, 18, 3919–3938.CrossRefGoogle ScholarPubMed
Xie, G. (2017). Principles of GPS and Receiver Design. Beijing, China: Publishing House of Electronics Industry.Google Scholar
Zhu, C. and Fan, X. (2015). A novel method to extend coherent integration for weak GPS signal acquisition. IEEE Communications Letters, 19(8), 1343–1346.CrossRefGoogle Scholar