Efficient and robust multi-structure GNSS receiver based on signal quality monitoring

JIA Qiong-qiong; GUO Qi-qi; LI Wei-peng; CHEN Hong-jin

doi:10.19818/j.cnki.1671-1637.2025.01.009

Volume 25 Issue 1

Feb. 2025

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Article Navigation > Journal of Traffic and Transportation Engineering > 2025 > 25(1): 132-144

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JIA Qiong-qiong, GUO Qi-qi, LI Wei-peng, CHEN Hong-jin. Efficient and robust multi-structure GNSS receiver based on signal quality monitoring[J]. Journal of Traffic and Transportation Engineering, 2025, 25(1): 132-144. doi: 10.19818/j.cnki.1671-1637.2025.01.009

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JIA Qiong-qiong, GUO Qi-qi, LI Wei-peng, CHEN Hong-jin. Efficient and robust multi-structure GNSS receiver based on signal quality monitoring[J]. Journal of Traffic and Transportation Engineering, 2025, 25(1): 132-144. doi: 10.19818/j.cnki.1671-1637.2025.01.009

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Efficient and robust multi-structure GNSS receiver based on signal quality monitoring

doi: 10.19818/j.cnki.1671-1637.2025.01.009

Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China

Funds:

National Natural Science Foundation of China U2133204

Open Fund Project of Key Laboratory of Wide-Area Monitoring and Safety Control Technology of Civil Aviation University of China 202202

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Corresponding author: JIA Qiong-qiong(1986-), female, associate professor, qiongjiawei@163.com
Received Date: 2023-12-08
Publish Date: 2025-02-25

Abstract

Abstract

To ensure the navigation performance of global navigation satellite system (GNSS) in complex environment while maintaining receiver efficiency, a multi-structure GNSS receiver was designed based on signal quality monitoring. The advantages of traditional scalar tracking loop (STL), vector tracking loop (VTL), and direct position estimation (DPE) receivers were fully utilized. The receiver adapted its operating mode in real-time by monitoring satellite signal quality. In addition to the basic STL, VTL, and DPE modes, the multipath channel exclusion and the narrow correlation anti-multipath were further added to both STL and VTL modes, and the exclusion multipath technolygy mode was added to DPE mode. Research results show that for simulation signal, under good satellite signal conditions, the receiver operates in STL mode, the horizontal and vertical positioning errors are 2.20 and 4.65 m, respectively. In the presence of multipath, the receiver switches to STL anti-multipath mode, the horizontal and vertical positioning errors are 3.23 and 18.18 m, respectively, significantly less than those in previous STL mode, which errors are 28.07 and 112.24 m. Under satellite occlusion, the receiver switches to VTL mode, the horizontal and vertical positioning errors are 7.24 and 38.44 m, respectively, better than those in previous STL anti-multipath mode, which errors are 16.59 and 110.10 m. In weak signal environment, the receiver switches to DPE mode, the horizontal and vertical positioning errors are 3.24 and 17.30 m, respectively, further improved from those in the previous mode, which errors are 4.47 and 24.89 m. The simulation results confirm that the multi-structure receiver switches to the optimal operating mode according to real-time signal monitoring. Based on the measured data, the receiver operates in STL mode under good signal condition, with horizontal and vertical positioning errors of 7.74 and 13.19 m. When some satellite are occluded, the receiver switches to VTL mode, with horizontal and vertical positioning errors of 16.07 and 9.31 m. In weak signal environment, the receiver switches to DPE mode, with horizontal and vertical positioning errors of 6.72 and 48.99 m. These errors are better than those in previous VTL mode.
- GNSS,
- multi-structure receiver,
- signal quality monitoring,
- adaptive switching,
- scalar receiver,
- vector receiver,
- direct position estimation receiver,
- complex environment

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References(32)

References

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Efficient and robust multi-structure GNSS receiver based on signal quality monitoring

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