Improvement of time difference of arrival measurements resolution by using fractional delay filters in a direct sequence-code division multiple access radionavigation system - Publication - Bridge of Knowledge

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Improvement of time difference of arrival measurements resolution by using fractional delay filters in a direct sequence-code division multiple access radionavigation system

Abstract

This study presents a method of improving time measurements resolution in a direct sequence-code division multiple access receiver by using a fine code tracking loop based on fractional delay filtering of a despreading sequence. It briefly describes the structure of a generic digital code tracking loop and the proposed modification which allows to measure time difference of arrival values with the subsample resolution, together with suggestions to reduce computational complexity by storing the set of samples of fractionally-delayed signals in memory. The proposed solution was tested in a laboratory and in real environment in a radionavigation system built in Gdansk University of Technology.

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Keywords

Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
IET Radar Sonar and Navigation no. 9, edition 5, pages 559 - 567,
ISSN: 1751-8784
Language:
English
Publication year:
2015
Bibliographic description:
Sadowski J.: Improvement of time difference of arrival measurements resolution by using fractional delay filters in a direct sequence-code division multiple access radionavigation system// IET Radar Sonar and Navigation. -Vol. 9, iss. 5 (2015), s.559-567
DOI:
Digital Object Identifier (open in new tab) 10.1049/iet-rsn.2014.0041
Verified by:
Gdańsk University of Technology

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