Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-23T21:28:45.019Z Has data issue: false hasContentIssue false
  • English
  • Français

Phase-aligned Dual-frequency Constant Envelope Multiplexing Technique for GNSS Signals

Published online by Cambridge University Press:  18 January 2018

Zhihui Zhou ,
Zuping Tang ,
Jiaolong Wei ,
Xuan Xia  and
Tao Yan Open the ORCID record for Tao Yan [Opens in a new window]
Zhihui Zhou
Affiliation:
(School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China)
Zuping Tang*
Affiliation:
(School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China)
Jiaolong Wei
Affiliation:
(School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China)
Xuan Xia
Affiliation:
(School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China)
Tao Yan
Affiliation:
(School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan 430074, China)
*
(E-mail: [email protected])
Get access Rights & Permissions [Opens in a new window]

Abstract

In the new generation of Global Navigation Satellite Systems (GNSS), dual-frequency constant envelope multiplexing is widely desired and is becoming an important subject in signal design. Considerable work has been devoted to multiplexing for the Alternative Binary Offset Carrier (AltBOC)-like signal model, for which each sideband consists of two or fewer signal components. In this paper, a phase-aligned dual-frequency constant envelope multiplexing technique is proposed for a general dual-frequency signal model. This multiplexing technique can be used to combine two constant-envelope-modulated signals in two sidebands into a composite signal with a constant envelope, where the constant-envelope-modulated signal in each sideband consists of an arbitrary number of signal components with an arbitrary power ratio and phase relationship among the signal components. A Lookup Table (LUT)-based signal generation method is also proposed, for which the required driving clock rate of the signal generator can be flexibly adjusted to meet the requirements of the satellite payload. Applications for the AltBOC-like signal model and a general dual-frequency signal model in the Beidou B1 band validate the flexibility and high multiplexing efficiency of our method. Specifically, AltBOC is a special case of the proposed method.

Keywords

Constant envelopeDual-frequencyPhase-alignedGlobal navigation satellite system (GNSS)
Type
Research Article
Information
The Journal of Navigation , Volume 71 , Issue 4 , July 2018 , pp. 899 - 918
Copyright
Copyright © The Royal Institute of Navigation 2018 

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

REFERENCES

Dafesh, P.A. and Cahn, C.R. (2009). Phase-optimized constant-envelope transmission (POCET) modulation method for GNSS signals. Proceedings of the 22nd International Technical Meeting of The Satellite Division of the Institute of Navigation, Savannah, GA, 2860–2866.Google Scholar
Dafesh, P.A. and Cahn, C.R. (2011). Application of POCET method to combine GNSS signals at different carrier frequencies. Proceedings of the 24th international technical meeting of the satellite division of the institute of navigation (ION GNSS 2011), San Diego, CA, 1201–1206.Google Scholar
Dafesh, P.A., Nguyen, T.M. and Lazar, S. (1999). Coherent adaptive subcarrier modulation (CASM) for GPS modernization. Proceedings of the 1999 National Technical Meeting of The Institute of Navigation, San Diego, CA, 649–660.Google Scholar
Guo, F., Yao, Z. and Lu, M. (2016). BS-ACEBOC: a generalized low-complexity dual-frequency constant-envelope multiplexing modulation for GNSS. GPS Solutions, 21(2) 1–15.Google Scholar
Huang, X., Zhu, X., Tang, X., Gong, H. and Ou, G. (2015). GCE-BOC Modulation: A Generalized Multiplexing Technology for Modern GNSS Dual-Frequency Signals. Proceedings of CSNC 2015, Volume II Lecture Notes in Electrical Engineering, 341, 47–55.Google Scholar
Lestarquit, L., Artaud, G. and Issler, J.L. (2008). AltBOC for dummies or everything you always wanted to know about AltBOC. Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation, Savannah, GA, 961–970.Google Scholar
OS SIS ICD. (2010). European GNSS (Galileo) Open Service Signal In Space Interface Control Document, Issue 1.1, 4–7.Google Scholar
Shivaramaiah, N.C., Dempster, A.G. and Rizos, C. (2013). Time-Multiplexed Offset-Carrier QPSK for GNSS. IEEE Transactions on Aerospace and Electronic Systems, 49, 1119–1138.CrossRefGoogle Scholar
Tang, Z., Zhou, H., Wei, J., Yan, T., Liu, Y., Ran, Y. and Zhou, Y. (2011). TD-AltBOC: A new COMPASS B2 modulation. Science China-Physics Mechanics & Astronomy, 54(6), 1014–1021.CrossRefGoogle Scholar
United Nations. (2010). Current and planned global and regional navigation satellite systems and satellite-based augmentations systems. Proceedings of ICG 2010, Turin, Italy, October, 15–40.Google Scholar
Yan, T., Wei, J., Tang, Z., Zhou, Z. and Xia, X. (2016). General AltBOC Modulation with Adjustable Power Allocation Ratio for GNSS. Journal of Navigation, 69(3), 531–560.Google Scholar
Yao, Z. and Lu, M. (2013). Constant Envelope Combination for Components on Different Carrier Frequencies with Unequal Power Allocation. Proceedings of ION ITM 2013, Institute of Navigation, San Diego, California, 629–637.Google Scholar
Yao, Z., Zhang, J. and Lu, M. (2016). ACE-BOC: dual-frequency constant envelope multiplexing for satellite navigation. IEEE Transactions on Aerospace and Electronic Systems, 52(1), 466–485.CrossRefGoogle Scholar
Yao, Z. and Lu, M. (2012). Dual-frequency constant envelope multiplex with non-equal power allocation for GNSS. Electronics Letters, 48(25), 1624–1625.Google Scholar
Zhang, K. (2013). Generalised constant-envelope DualQPSK and AltBOC modulations for modern GNSS signals. Electronics Letters, 49(21), 1335–1337.Google Scholar