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Performance Improvement of Satellite Navigation System Using Inter-satellite Distance Information

Performance Improvement of Satellite Navigation System Using Inter-satellite Distance Information A satellite navigation system calculates the position of a user using measurement values from a satellite, receiver, and broadcast ephemeris, which provides position information about the navigation satellite. However, in scenarios where it is difficult to secure sufficient satellite visibility, such as in a downtown area, the position accuracy of a global navigation satellite system is reduced. This study proposes a navigation algorithm for improving the accuracy of navigation using a measurement value in addition to the existing pseudorange measurement. A user who cannot secure a sufficient navigation visibility uses a standalone scheme that depends exclusively on the pseudorange measurement to estimate the position. The proposed method uses a position estimation algorithm that uses the measured value of the distance between satellites and geometric relation between users to construct a measurement equation, and combines this with the existing pseudorange measurement equation. The results obtained from static and dynamic experiments verify the superior performance of the proposed navigation algorithm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Aeronautical & Space Sciences Springer Journals

Performance Improvement of Satellite Navigation System Using Inter-satellite Distance Information

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References (9)

Publisher
Springer Journals
Copyright
Copyright © 2018 by The Korean Society for Aeronautical & Space Sciences and Springer Nature Singapore Pte Ltd.
Subject
Engineering; Aerospace Technology and Astronautics; Fluid- and Aerodynamics
ISSN
2093-274X
eISSN
2093-2480
DOI
10.1007/s42405-018-0031-5
Publisher site
See Article on Publisher Site

Abstract

A satellite navigation system calculates the position of a user using measurement values from a satellite, receiver, and broadcast ephemeris, which provides position information about the navigation satellite. However, in scenarios where it is difficult to secure sufficient satellite visibility, such as in a downtown area, the position accuracy of a global navigation satellite system is reduced. This study proposes a navigation algorithm for improving the accuracy of navigation using a measurement value in addition to the existing pseudorange measurement. A user who cannot secure a sufficient navigation visibility uses a standalone scheme that depends exclusively on the pseudorange measurement to estimate the position. The proposed method uses a position estimation algorithm that uses the measured value of the distance between satellites and geometric relation between users to construct a measurement equation, and combines this with the existing pseudorange measurement equation. The results obtained from static and dynamic experiments verify the superior performance of the proposed navigation algorithm.

Journal

International Journal of Aeronautical & Space SciencesSpringer Journals

Published: Jun 6, 2018

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