Please submit manuscripts in either of the following two submission systems

    ScholarOne Manuscripts

  • ScholarOne
  • 勤云稿件系统

  • 登录

Search by Issue

  • 2024 Vol.31
  • 2023 Vol.30
  • 2022 Vol.29
  • 2021 Vol.28
  • 2020 Vol.27
  • 2019 Vol.26
  • 2018 Vol.25
  • 2017 Vol.24
  • 2016 vol.23
  • 2015 vol.22
  • 2014 vol.21
  • 2013 vol.20
  • 2012 vol.19
  • 2011 vol.18
  • 2010 vol.17
  • 2009 vol.16
  • No.1
  • No.2

Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

期刊网站二维码
微信公众号二维码
Related citation:ZOU De-yue,MENG Wei-xiao,WANG Wen-jing,HAN Shuai.A new frequency domain search strategy in high sensitivity GPS signal acquisition circuit designing[J].Journal of Harbin Institute Of Technology(New Series),2012,19(5):61-66.DOI:10.11916/j.issn.1005-9113.2012.05.010.
【Print】   【HTML】   【PDF download】   View/Add Comment  Download reader   Close
←Previous|Next→ Back Issue    Advanced Search
This paper has been: browsed 1614times   downloaded 11times 本文二维码信息
码上扫一扫!
Shared by: Wechat More
A new frequency domain search strategy in high sensitivity GPS signal acquisition circuit designing
Author NameAffiliation
ZOU De-yue Dept. of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China 
MENG Wei-xiao Dept. of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China 
WANG Wen-jing Dept. of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China 
HAN Shuai Dept. of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China 
Abstract:
The contradiction between the sensitivity and the frequency domain searching speed of GPS signal acquisition circuit has been discussed for a long time. The signal integration operation which enhances the sensitivity of the system also makes the frequency slots narrower, which affects the speed of the system. In this research a high sensitivity GPS signal acquisition circuit is implemented with a new frequency domain search strategy. The new strategy combines DDS sweep strategy with cyclic shifting sweep strategy which makes the TTFF (time to first fix) reduced evidently. The extra hardware resource cost of the new strategy is acceptable. The speed advantage of the new frequency domain search strategy has been verified by hardware comparison tests.
Key words:  GPS  weak signal  fast acquisition  FPGA
DOI:10.11916/j.issn.1005-9113.2012.05.010
Clc Number:TN87
Fund:

LINKS