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	Research on Fast Hot-Start Algorithm for Combined BDS and GPS Receiver
	Tan, Siyuan ; Meng, Fanchen ; Zhu, Bocheng
	2015
关键词	Hot-Start Least Squares STT fast positioning
英文摘要	The core issue of fast positioning during the hot start process is to obtain the position result before frame synchronization. Due to the lack of incomplete time information needed to compute the pseudorange before frame synchronization, the pseudorange must be calculated by estimating the integer part of bit-scale time plus the precise fraction part within one bit. In this paper, we introduce a new fast hot-start algorithm that is easily implemented within traditional Least Square (LS) method framework. The proposed algorithm makes full use of an underling property which contributes to the establishment of a good linearity between the Satellite Transmitted Time (STT) biases and pseudorange residuals. With this relation, the integer part of bit-scale time can be precisely calculated, thus correct positioning results can be obtained. Simulation results show that the proposed algorithm can provide stable and fairly good positioning results after bit synchronization than that of traditional scheme. Furthermore, we extend the hot-start algorithm to the case of dual-system, and discuss the strategies for combined BDS and GPS receiver.; EI; CPCI-S(ISTP); tsy2013@pku.edu.cn; 658-662
语种	英语
出处	7th International Conference on Computational Intelligence and Communication Networks (CICN)
DOI标识	10.1109/CICN.2015.135
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449391]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Tan, Siyuan,Meng, Fanchen,Zhu, Bocheng. Research on Fast Hot-Start Algorithm for Combined BDS and GPS Receiver. 2015-01-01.

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