Weak Signal Acquisition Algorithm of GPS Software Receiver Aided by INS

Author

Jingwei Ma ; Lingjuan Miao ; Xi Zhang ; Zhifeng Gao

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

Volume

1

fYear

2013

fDate

28-29 Oct. 2013

Firstpage

321

Lastpage

325

Abstract

This paper modifies the traditional half bit acquisition algorithm and proposes a new algorithm for weak signal acquisition. The new algorithm can increase coherent integration time to 15 ms and the sensitivity of acquisition is improved in the new algorithm. The performance of acquisition algorithm aided by INS (Inertial Navigation System) is analyzed. Using the INS information to improve the running speed of the weak signal acquisition algorithm, the GPS software receiver can capture the weak signal quickly. The simulation results indicate that the new algorithm can capture the indoor feeble signals with SNR (signal-to-noise ratio) of -39 dB rapidly.

Keywords

Global Positioning System; inertial navigation; signal detection; software radio; telecommunication computing; GPS software receiver; INS; acquisition algorithm; coherent integration time; half bit acquisition algorithm; indoor feeble signals SNR; inertial navigation system; signal-to-noise ratio; weak signal acquisition; weak signal acquisition algorithm; Global Positioning System; Receivers; Satellites; Signal to noise ratio; Software; Software algorithms; Doppler shift; INS; SNR; software receiver; weak signal;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence and Design (ISCID), 2013 Sixth International Symposium on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ISCID.2013.87

Filename

6805000