The weak GPS signal parallel processing algorithm in dual-core based GPS software receiver

Yongrong Sun, Jianfeng Miao, Wu Chen, Jianye Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The basic GPS signal acquisition and several weak signal processing algorithms based on FFT is presented in this paper. Considering the sensitivity and the time consuming issues, a weak GPS signal parallel processing algorithm based on Duo-Core is proposed in the framework of a software GPS receiver. This method was developed for the acquisition of weak signals without a priori information. Based on Duo-Core processor, a parallel processing improvement is designed and implemented. This algorithm average assigns signals over the two cores, and parallel processes them simultaneously. After that, a threshold determination is given. At last a set of IF real data is collected in a dense urban area of Hong Kong. The method has been examined by two tests using the real sampled data. The results demonstrate that the available signals have been successfully enhanced from 4 satellites to 8 satellites; the sensitivity and processing speed of the GPS receiver has been improved and the scheme in this software receiver can be used to acquire the GPS signal under weak signal situations.
Original languageEnglish
Title of host publication2008 2nd International Symposium on Systems and Control in Aerospace and Astronautics, ISSCAA 2008
DOIs
Publication statusPublished - 1 Dec 2008
Event2008 2nd International Symposium on Systems and Control in Aerospace and Astronautics, ISSCAA 2008 - Shenzhen, China
Duration: 10 Dec 200812 Dec 2008

Conference

Conference2008 2nd International Symposium on Systems and Control in Aerospace and Astronautics, ISSCAA 2008
Country/TerritoryChina
CityShenzhen
Period10/12/0812/12/08

Keywords

  • Dual-core
  • GPS
  • Signal processing
  • Software receiver
  • Weak signal acquisition

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering

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