卫星导航信号码片形状监测算法研究

李瑞丹; 唐小妹; 欧钢

doi:10.13442/j.gnss.1008-9268.2017.04.001

卫星导航信号码片形状监测算法研究

doi: 10.13442/j.gnss.1008-9268.2017.04.001

国防科技大学电子科学与工程学院卫星导航定位技术工程研发中心,湖南长沙 410073

详细信息

作者简介:
李瑞丹(1993-),女,硕士研究生,主要从事卫星导航信号处理。

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出版历程
- 刊出日期: 2017-09-06

Satellite Navigation Signal Monitoring Algorithm Based on Chip Shape

Satellite Navigation R&D Center, School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073,China

摘要

摘要: 信号质量监测技术是保障卫星导航系统高服务性能的重要手段之一。多相关器法是一种传统的信号质量监测算法,但它也存在一些局限性,如不能直观地反映异常信号波形特征、检测量效果随着信号调制方式的不同而不同、随着相关器的增多计算复杂度增大。针对以上问题,同时为了提高监测性能,本文采用了一种能获取码片过渡段的算法,并对检测量构成形式进行扩充,提出了一种高效检测量的筛选算法。最后本文对码片监测算法和多相关器算法进行了仿真与实测数据分析,验证了检测量选择算法能一定程度提高监测性能;码片监测算法相对多相关器法提高了监测敏感度,且有在实际实现时有更小的计算量及对其他体制信号更强的适用性。
- 卫星导航 /
- 信号质量监测 /
- 信号畸变 /
- 检测量选择
Abstract: Signal quality monitoring technology is one of the significant means to guarantee the high performance of satellite navigation system. Multicorrelator algorithm and chip shape monitor algorithm. The result proves that selected metrics is more effective than raw metrics. The result also shows that chip shape monitor algorithm is more sensitive for distorted waveform, has stronger applicability to other modulation and has smaller calculation complexity.
- Satellite navigation /
- SQM /
- signal distortion /
- metric select

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参考文献(9)

[1]	CHRISTIE J R I. GPS signal quality monitoring system［C］／／Proceedings of International Technical Meeting of the Satellite Division of the Institute of Navigation, 2004:2239-2245.
[2]	PHELRTS R E. Multi-correlator techniques for robust mitigation of threats to GPS signal quality ［D］. Standford University, Palo Alto, Calif, USA, 2001.
[3]	GAN X. Multi-correlators techniques for GPS signal quality monitoring［J］. Chinese Space Science ＆ Technology, 2011, 31(4):30-37.
[4]	PHELRTS R E, WONG G, WALTER T, et al. Signal deformation monitoring for dual
[5]	ALI K, MANFREDINI, DOVIS E G. Vestigial signal defense through signal quality monitoring techniques based on joint use of two metrics［C］／／In Proceedings of the 2014 IEEE／ION PLANS 2014:1240
[6]	SHLOSS P. A simple method of signal quality monitoring for WAAS LNAV／VNAV［C］／／Proceedings of International Technical Meeting of the Satellite Division of the Institute of Navigation, 2002:800-808.
[7]	PHELRTS R E, WALTER T, ENGE P. Toward real-time SQM for WAAS: Improved detection techniques［C］／／Proceedings of the 16th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GPS 2003:2739-2751.
[8]	THEVENON P, JULIEN O, TESSIER Q, et al. Detection performances of evil waveform monitors for the GPS L5 signal［C］／／Ion Gnss+International Technical Meeting of the Satellite Division of the Institute of Navigation, 2014:3312-3322.
[9]	FENTON P C, JONES J. The theory and performance of NovAtel Inc.'s vision correlator［C］／／Proceedings of the 19 th International Technical Meeting of the Satellite Division of the Institute of Navigation, 2006:2178-2186.