Receiver Time Misalignment Correction for GPS-based Attitude Determination release_exi5t6ksajgshd3o5ep2gw6yja

by Xiaohong Zhang, Mingkui Wu, Wanke Liu

Published in Journal of navigation by Cambridge University Press (CUP).

2015   Volume 68, Issue 04, p646-664

Abstract

A prerequisite for a Global Positioning System (GPS) attitude determination is to calculate baselines between antennae with accuracy at the millimetre level simultaneously. However, in order to have a low cost attitude determination system, a set of Commercial-Off-The-Shelf (COTS) receivers with separate clocks are used. In this case, if the receiver clocks are not precisely synchronized, the baseline vector between antennae will be calculated from the GPS signals received at different times. This can be a significant error source for high-kinematic applications. In this paper, two equivalent and effective approaches are developed to compensate this significant bias for baseline estimation and attitude determination. Test results using real airborne GPS data demonstrate that the receiver time misalignment between the two receivers can result in a 5 cm baseline offset for an aircraft with a 50 m/s velocity; the corresponding attitude errors can reach about 0·50° in yaw and 0·10° in pitch respectively for the attitude determination system with a baseline length of 3·79 m. With the proposed methods, these errors can be effectively eliminated.
In application/xml+jats format

Archived Files and Locations

application/pdf  844.0 kB
file_jx53zdo5areztnylevydqowkky
www.cambridge.org (web)
web.archive.org (webarchive)
Read Archived PDF
Preserved and Accessible
Type  article-journal
Stage   published
Date   2015-02-05
Language   en ?
Journal Metadata
Not in DOAJ
In Keepers Registry
ISSN-L:  0373-4633
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: a30447b5-68b5-4aab-9334-a8af8cc73d16
API URL: JSON