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Integrated GNSS Attitude and Position Determination based on an Affine Constrained Model

Published online by Cambridge University Press:  01 August 2017

Haiying Liu*
Affiliation:
(College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China) (Nottingham Geospatial Institute and Sino-UK Geospatial Engineering Centre, University of Nottingham, Nottingham, NG7 2TU, UK)
Lei Xu
Affiliation:
(College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China)
Xiaolin Meng
Affiliation:
(Nottingham Geospatial Institute and Sino-UK Geospatial Engineering Centre, University of Nottingham, Nottingham, NG7 2TU, UK)
Xibei Chen
Affiliation:
(College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China)
Junyi Li
Affiliation:
(First Geodetic Team, National Administration of Surveying, Mapping and Geoinformation, Xi'an, China)
*

Abstract

Global Navigation Satellite System (GNSS) attitude determination and positioning play an important role in many navigation applications. However, the two GNSS-based problems are usually treated separately. This ignores the constraint information of the GNSS antenna array and the accuracy is limited. To improve the performance of navigation, an integrated attitude and position determination method based on an affine constraint model is presented. In the first part, the GNSS array model and affine constrained attitude determination method are compared with the unconstrained methods. Then the integrated attitude and position determination method is presented. The performance of the proposed method is tested with a series of static data and dynamic experimental GNSS data. The results show that the proposed method can improve the success rate of ambiguity resolution to further improve the accuracy of attitude determination and relative positioning compared to the unconstrained methods.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 2017 

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