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Multipath Mitigation Techniques for Satellite- Based Positioning Applications

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review


Original languageEnglish
Title of host publicationGlobal Navigation Satellite Systems - Signal, Theory and Applications
EditorsShuanggen Jin
Place of PublicationRijeka, Croatia
ISBN (Print)978-953-307-843-4
Publication statusPublished - 2012
Publication typeA3 Part of a book or another research book


This chapter addressed the challenges encountered by a GNSS signal due to multipath propagation. A wide range of correlation-based multipath mitigation techniques were discussed and the performance of some of these techniques were evaluated in terms of running average error and root-mean-square error. Among the analyzed multipath mitigation techniques, RSSML, in general, achieved the best multipath mitigation performance in moderate-to-high C/N0 scenarios (for example, 30 dB-Hz and onwards). The other techniques, such as PT(Diff2) and HRC showed good multipath mitigation performance only in high C/N0 scenarios (for example, 40 dB-Hz and onwards). The other new technique SBME offered slightly better multipath mitigation performance to the well-known nEML DLL at the cost of an additional correlator. However, as the GNSS research area is fast evolving with many potential applications, it remains a challenging topic for future research to investigate the feasibility of these multipath mitigation techniques with the multitude of signal modulations, spreading codes, and spectrum placements that are (or are to be) proposed.

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