A New Direct Decimation Algorithm for Digital Down-Conversion of GPS Satellite Signal

Author

Li Hui ; Hao Jianjun ; He Qiusheng ; Cheng Yaqi

Author_Institution

China Univ. of Min. & Technol., Beijing

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

1232

Lastpage

1235

Abstract

In order to simplify satellite navigation receiver architecture, a down conversion method based on digital signal decimation is proposed. By using separating and accumulating method, direct down-conversion of a digitized carrier signal with relative high frequency is realized. This method has virtues of simpler structure, high speed and less calculation. Also it can well preserve navigation message and Doppler information, whereas it may degrade the S/N of signal and sensitivity of receiver. Analysis and simulation results show that it has no effect on positioning precision of receiver.

Keywords

Global Positioning System; Doppler information; GPS satellite signal; digital down-conversion; digital signal decimation; direct decimation algorithm; receiver positioning precision; receiver sensitivity; satellite navigation receiver architecture; separating-accumulating method; Binary phase shift keying; Energy consumption; Filters; Frequency conversion; Global Positioning System; Helium; Microelectronics; Receivers; Satellite broadcasting; Satellite navigation systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.314

Filename

4340089