A Solution to Refining Precision of Pseudo-range for Real-Time Software-Defined GPS Receiver

Author

Jian, Liu ; Ke, Wang ; Wei, Chen ; Tao, Xie ; Xiaole, Zhang

Author_Institution

Sch. of Inf. Eng., Wuhan Univ. of Technol., Wuhan

Volume

1

fYear

2009

fDate

6-8 Jan. 2009

Firstpage

88

Lastpage

91

Abstract

In this paper, a novel design of refining precision of pseudo-range is presented and ameliorates the pseudo-range degradation in a scheme of reducing local code replicas´ adjustment for real time software GPS receiver. The code phase error corresponding to pseudo-range degradation is estimated and compensated by linear interpolation and curve fitting, according to the discriminator output in delay locked loop (DLL). The final pseudo-range precision is validated by simulating and is improved to 2.827 meters with a position error about 8 meters.

Keywords

Global Positioning System; curve fitting; interpolation; radio receivers; real-time systems; software radio; code phase error; curve fitting; delay locked loop; discriminator output; distance 8 m; linear interpolation; local code replicas´ adjustment; pseudo-range degradation; real-time software-defined GPS receiver; Curve fitting; Degradation; Delay effects; Delay estimation; Global Positioning System; Interpolation; Low pass filters; Phase estimation; Sampling methods; Tracking loops; delay locked loop; interpolations and curve fitting; pseudo-range precision; real time software GPS receiver;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on

Conference_Location

Yunnan

Print_ISBN

978-0-7695-3501-2

Type

conf

DOI

10.1109/CMC.2009.201

Filename

4796962