Global navigation satellite system signal acquisition using multi-bit codes and a multi-layer search strategy

Jyh-Chin Juang, Y. H. Chen

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The acquisition of spreading sequences is a crucial task in spread-spectrum communication and ranging receivers. An acquisition method by utilising a multi-bit local code to acquire spread-spectrum signals is presented. The local code design problem towards multiple-support, bounded sidelobe, bounded cross-correlation, balance and bounded variance is formulated and solved through a quadratic programming. Based on the local codes, a multi-layer acquisition approach is devised to yield an overall improvement in acquisition speed. The performance tradeoffs in the code design stage and code acquisition stage are described. Applications of the proposed method to acquire global positioning system and Galileo codes are provided. It is shown that the proposed scheme can effectively reduce the mean acquisition time in comparison with the traditional search approach.

Original languageEnglish
Article numberIRSNBX000004000005000673000001
Pages (from-to)673-684
Number of pages12
JournalIET Radar, Sonar and Navigation
Volume4
Issue number5
DOIs
Publication statusPublished - 2010 Oct 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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