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	Energy Frequency Discriminator for GNSS Carrier Tracking
	Zhang, Yanbin ; Yu, Dunshan ; Lu, Weijun
	2015
英文摘要	Carrier tracking is an essential task for the operation of most wired and wireless systems, which allows the receiver to precisely synchronize with the carrier of the incoming signals. With the emergence of new services and applications, the receivers should operate under much more challenging environment, e.g. high dynamics, severe signal attenuation. These critical requirements call for the development of new robust carrier tracking algorithms. In this paper, the conventional phase-based frequency discriminator is briefly reviewed and compared. Another approach of identifying residual frequency exists in the correlation energy losses relating to Doppler offset. On this basis, an energy-based frequency discriminator is proposed. Monte Carlo simulation results and real data implementations demonstrate that the energy frequency discriminator (EFD) can track even weaker signals, compared with the traditional arctangent discriminators. Meanwhile, it is insensitive to sign transition, and has large pull-in range which will shorten the time to first fix (TTFF). Furthermore, the concept of noncoherent accumulation can be adopted in this technique to more robustly track weak signals.; CPCI-S(ISTP); ybzhang.ime@pku.edu.cn; luwj@bupt.edu.cn; 3655-3661
语种	英语
出处	PROCEEDINGS OF THE 28TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2015)
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/446328]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhang, Yanbin,Yu, Dunshan,Lu, Weijun. Energy Frequency Discriminator for GNSS Carrier Tracking. 2015-01-01.

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