Research on GNSS adjacent frequency interference test of mobile terminal

Xun Dai; Huanhuan Jing; Qinjuan Zhang; Xinyue Chen

doi:10.1117/12.3029217

6 May 2024 Research on GNSS adjacent frequency interference test of mobile terminal

Xun Dai, Huanhuan Jing, Qinjuan Zhang, Xinyue Chen

Proceedings Volume 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024); 131072N (2024) https://doi.org/10.1117/12.3029217
Event: Fourth International Conference on Sensors and Information Technology (ICSI 2024), 2024, Xiamen, China

Abstract

At present, the increasingly complex electromagnetic environment, the coexistence of multiple constellations and the complexity of interference signals such as adjacent frequency signals faced by mobile terminals pose a serious challenge to their navigation application experience. In this paper, the influence of adjacent frequency interference signal on GNSS positioning performance was deeply studied, and a GNSS adjacent frequency interference conducted test system was developed based on the adjacent frequency sensitivity test method. According to the system, the interference signal generator is used for simulating noise signals of adjacent frequency of GNSS satellite signals, and the carrier-to-noise ratio degradation of a tested device before and after scrambling is tested, so that the quantitative evaluation and analysis of the anti-interference performance of all GNSS modes and frequency bands supported by a mobile terminal are realized. The test results showed that the measurement accuracy of the proposed test system is better than 0.1 dB.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xun Dai, Huanhuan Jing, Qinjuan Zhang, and Xinyue Chen "Research on GNSS adjacent frequency interference test of mobile terminal", Proc. SPIE 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024), 131072N (6 May 2024); https://doi.org/10.1117/12.3029217

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KEYWORDS

Satellite navigation systems

Signal generators

Global Positioning System

Navigation systems

Signal detection

Signal to noise ratio

Interference (communication)

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