Ultratight GPS/Reduced-IMU Integration for Land Vehicle Navigation

A reduced inertial measurement unit (RIMU) is ultratightly (UT) integrated with a vector-based Global Positioning System (GPS) receiver using two approaches; vector delay and frequency lock loops (VDLL/VFLL), and a VDLL with a cascaded phase lock loop (CaP). A CaP plus a frequency discriminator (CaP...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2013-07, Vol.49 (3), p.1781-1791
Main Authors: Debo Sun, Petovello, M. G., Cannon, M. E.
Format: Article
Language:English
Subjects:
Doppler effect
Doppler measurement
Frequency measurement
Global Positioning System
Phase locked loops
Tracking loops
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Summary:A reduced inertial measurement unit (RIMU) is ultratightly (UT) integrated with a vector-based Global Positioning System (GPS) receiver using two approaches; vector delay and frequency lock loops (VDLL/VFLL), and a VDLL with a cascaded phase lock loop (CaP). A CaP plus a frequency discriminator (CaPF) composite loop is developed to provide reliable Doppler measurements and improves navigation performance by up to 20% compared with other methods using real world data.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2013.6558019