Pilot signal assisted GNSS signal bit synchronization method under high dynamic condition

被引：1
|
作者：
Li W. [1 ]
Wang Y. [1 ]
机构：
[1] School of Telecommunications Engineering, Xidian University, Xi'an
来源：
| 2018年 / Chinese Institute of Electronics卷 / 40期
关键词：
Bit synchronization; Doppler frequency shift; Global navigation satellite system; High dynamic; Pilot signal;
D O I：
10.3969/j.issn.1001-506X.2018.02.03
中图分类号：
学科分类号：
摘要：
In order to improve the bit synchronization performance of the global navigation satellite system receiver under high dynamic conditions, a new method of bit synchronization is proposed based on the new civil signals' structure including data signals and pilot signals. Starting from the candidate points of bit transition, the data signal coherent integrations values are multiplied with the conjugation of pilot signal coherent integration values. The outputs are coherent accumulated and noncoherent accumulated, and the real bit transition point is detected by the noncoherent accumulated values starting from different candidate points of bit transition. Theoretical analysis and computer simulation results prove that the proposed method can effectively eliminate the influence of doppler frequency shift under the high dynamic conditions, and its synchronization performance is better than the traditional bit synchronization method. © 2018, Editorial Office of Systems Engineering and Electronics. All right reserved.
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收藏
页码：255 / 260
页数：5
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