Fast algorithm with improved circular correlation method for GPS signal acquisition

被引：0

作者：

Li, Yanmin ^{[1
]}

Yi, Qingming ^{[1
]}

Shi, Min ^{[1
]}

机构：

[1] Jinan Univ, Dept Elect Engn, Guangzhou 510632, Guangdong, Peoples R China

来源：

MECHATRONICS AND INTELLIGENT MATERIALS III, PTS 1-3 | 2013年 / 706-708卷

关键词：

Weak GPS signal; fast acquisition; serial sliding; circular correlation;

D O I：

10.4028/www.scientific.net/AMR.706-708.794

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to improve acquisition speed and carrier frequency accuracy, a fast algorithm to acquire GPS signal is proposed. Signal-to-Noise Ratio is improved by coherent integration and non-coherent integration. The advantages of serial sliding algorithm and circular correlation algorithm are combined to achieve high carrier frequency accuracy. Removing the information of C/A code makes serial search from two-dimensional to one-dimensional to achieve less computation. Simulation shows weak signal of -30dB S/N is successfully acquired. The error of carrier frequency is controlled within 50Hz. So the data processing efficiency for the tracking loop is greatly increased.

引用

页码：794 / 797

页数：4

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