A Fast Algorithm for Long Code Direct Acquisition

被引：0

作者：

Liang, Haoxiang ^{[1
]}

Zhang, Jichao ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Res Inst Elect Sci & Technol, Chengdu 611731, Sichuan, Peoples R China

来源：

2013 INTERNATIONAL WORKSHOP ON MICROWAVE AND MILLIMETER WAVE CIRCUITS AND SYSTEM TECHNOLOGY (MMWCST) | 2013年

关键词：

GPS; P-code; long code direct acquisition; XFAST; FFT;

D O I：

暂无

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 GPS (Global Position System), direct acquisition of the GPS P(Y)-code is a two-dimension lengthy searching process in time and frequency dimension. CCPAZP-FFT (Circular Correlation by Partition And Zero Padding) uses FFT to achieve parallel correlation and frequency searching. In this way acquisition can be achieved very fast as it transfers two-dimensional search into parallel one-dimensional search. However, correlation points are still too much and Computation is heavy. This paper proposes an improvement algorithm of combination of CCPAZP-FFT and XFAST. This way Compares to CCPAZP-FFT is reduced by two thirds of the computation in order to achieve rapid long code acquisition.

引用

页码：419 / 422

页数：4