Signal Quality Assessment of BDS-3 Preliminary System

Chengeng SU; Shuren GUO; Xunan LIU; Yongnan RAO; Meng WANG

doi:10.11999/JEIT190683

Volume 42 Issue 11

Nov. 2020

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Article Navigation > Journal of Electronics & Information Technology > 2020 > 42(11): 2689-2697

Chengeng SU, Shuren GUO, Xunan LIU, Yongnan RAO, Meng WANG. Signal Quality Assessment of BDS-3 Preliminary System[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683

Citation:

Chengeng SU, Shuren GUO, Xunan LIU, Yongnan RAO, Meng WANG. Signal Quality Assessment of BDS-3 Preliminary System[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2689-2697. doi: 10.11999/JEIT190683

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Signal Quality Assessment of BDS-3 Preliminary System

doi: 10.11999/JEIT190683

1.
Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China
2.
College of Electronic Science, National University of Defense Technology, Changsha 410073, China
3.
National Marine Hazard Mitigation Service, Beijing 100194, China
4.
National Timing Service Center, China Academy of Sciences, Xi’an 710600, China

Received Date: 2019-09-04
Rev Recd Date: 2020-03-31

Available Online: 2020-05-12

Publish Date: 2020-11-16

Abstract

Abstract

The Signal-In-Space (SIS) quality affects directly the user performance of Global Navigation Satellite System (GNSS). Unlike BDS-2, the BDS-3 satellites not only broadcast old signals, but also broadcast new signals such as B1C and B2a at the same time. The signal structure of BDS-3 with multi-frequency, multi-signal and multi-component is more complex than BDS-2, which is a great challenge to signal quality control of BDS-3 satellites. By the end of 2018, 18 BDS-3 satellites were successfully launched and the BDS-3 preliminary system is completed to provide global services. It is necessary to evaluate the signal quality of BDS-3. Traditional signal quality assessment methods focus on the qualitative assessment of a single item, but lacks systematic and quantitative analysis results for the complex signal structure of BDS-3. Based on the Interface Control Document (ICD) of BDS, this paper studies the influence of different parameter configurations on the evaluation results from the aspects of power characteristics, frequency characteristics, time characteristics, correlation characteristics and signal consistency, and forms a set of quantitative evaluation methods for new modulations and multi-frequency, multi-component signals. Based on the signal quality assessment system with 40-meter aperture antenna, 18 MEO satellites of BDS-3 preliminary system were monitored, and the signal quality of BDS-3 satellites were comprehensively and quantitatively evaluated for the first time. The results show that, signal qualities of BDS-3 satellites are good, and the 18 MEOs have a good consistency, which can meet the requirements of ICD and GNSS users. The evaluation methods can be also used to quantitatively evaluate the signal quality of other satellites.
- BDS-3,
- Global Navigation Satellite System (GNSS),
- Signal quality,
- Performance assessment

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References(16)

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