GNSS signal acquisition in weak signal condition

Author

Can Zhu ; Xiangning Fan

Author_Institution

Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing, China

fYear

2014

fDate

23-25 July 2014

Firstpage

1128

Lastpage

1132

Abstract

In this paper, a new method for Global Navigation Satellite System (GNSS) signal acquisition in weak signal condition is considered, mainly on bit transition and accumulation over multiple code periods. The impact of bit transition on the acquisition block is analyzed and an algorithm based on the Discrete Fourier Transform (DFT) operation is proposed to solve the bit transition problem, after which the accumulation scheme is presented based on the proposed algorithm. The simulation results and receiver operative characteristic (ROC) curves are given to verify the bit transition and accumulation methods.

Keywords

discrete Fourier transforms; satellite navigation; sensitivity analysis; signal detection; DFT operation; GNSS signal acquisition; ROC curves; bit transition; discrete Fourier transform operation; global navigation satellite system; multiple code periods; receiver operative characteristic curves; weak signal condition; Correlation; Delays; Discrete Fourier transforms; Doppler shift; Global Positioning System; Receivers; Satellites; Discrete Fourier Transform; bit transition; multiple code periods; receiver operative characteristic curve; weak signal condition;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2014 9th International Symposium on

Conference_Location

Manchester

Type

conf

DOI

10.1109/CSNDSP.2014.6923999

Filename

6923999