Relative Positioning Method of Using Single-frequency Model for Formation Flying Missions

DOI

10.2991/iiicec-15.2015.125How to use a DOI?

Keywords

Satellites in formation flying; Ionosphere-free model; Relative positioning; EKF

Abstract

Use of Global Positioning System (GPS) for space applications, especially in low-earth orbit (LEOs) formation flying missions, has recently attracted more and more attentions. This paper proposes an Extended Kalman Filter (EKF) to increase the accuracy of relative position of LEO formation flying missions. The EKF uses satellite orbital dynamic model, with combination of GPS and carrier phase measurements upon the ionosphere-free model. The carrier phase fuzziness and the position of spacecraft form the state vector, which are predicted in the EKF. Meanwhile, influence of uncertainty of systematic errors is taken into account. The optimal estimation and its modified covariance matrix are derived upon the principle of minimum error covariance. The proposed EKF method is compared with the traditional double difference method in the simulated experiments. The results demonstrate the validity and improvement of the proposed method especially in the long baseline scenarios.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hanyi Shi
AU  - Qizi Huangpeng
AU  - Yuanyuan Qiao
AU  - Yong Li
AU  - Wenwei Huang
PY  - 2015/03
DA  - 2015/03
TI  - Relative Positioning Method of Using Single-frequency Model for Formation Flying Missions
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 546
EP  - 550
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.125
DO  - 10.2991/iiicec-15.2015.125
ID  - Shi2015/03
ER  -