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GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint

For Global Navigation Satellite System (GNSS) single frequency, single epoch attitude determination, this paper proposes a new reliable method with baseline vector constraint. First, prior knowledge of baseline length, heading, and pitch obtained from other navigation equipment or sensors are used t...

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Detalles Bibliográficos
Autores principales: Gong, Ang, Zhao, Xiubin, Pang, Chunlei, Duan, Rong, Wang, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721695/
https://www.ncbi.nlm.nih.gov/pubmed/26633413
http://dx.doi.org/10.3390/s151229774
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author Gong, Ang
Zhao, Xiubin
Pang, Chunlei
Duan, Rong
Wang, Yong
author_facet Gong, Ang
Zhao, Xiubin
Pang, Chunlei
Duan, Rong
Wang, Yong
author_sort Gong, Ang
collection PubMed
description For Global Navigation Satellite System (GNSS) single frequency, single epoch attitude determination, this paper proposes a new reliable method with baseline vector constraint. First, prior knowledge of baseline length, heading, and pitch obtained from other navigation equipment or sensors are used to reconstruct objective function rigorously. Then, searching strategy is improved. It substitutes gradually Enlarged ellipsoidal search space for non-ellipsoidal search space to ensure correct ambiguity candidates are within it and make the searching process directly be carried out by least squares ambiguity decorrelation algorithm (LAMBDA) method. For all vector candidates, some ones are further eliminated by derived approximate inequality, which accelerates the searching process. Experimental results show that compared to traditional method with only baseline length constraint, this new method can utilize a priori baseline three-dimensional knowledge to fix ambiguity reliably and achieve a high success rate. Experimental tests also verify it is not very sensitive to baseline vector error and can perform robustly when angular error is not great.
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spelling pubmed-47216952016-01-26 GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint Gong, Ang Zhao, Xiubin Pang, Chunlei Duan, Rong Wang, Yong Sensors (Basel) Article For Global Navigation Satellite System (GNSS) single frequency, single epoch attitude determination, this paper proposes a new reliable method with baseline vector constraint. First, prior knowledge of baseline length, heading, and pitch obtained from other navigation equipment or sensors are used to reconstruct objective function rigorously. Then, searching strategy is improved. It substitutes gradually Enlarged ellipsoidal search space for non-ellipsoidal search space to ensure correct ambiguity candidates are within it and make the searching process directly be carried out by least squares ambiguity decorrelation algorithm (LAMBDA) method. For all vector candidates, some ones are further eliminated by derived approximate inequality, which accelerates the searching process. Experimental results show that compared to traditional method with only baseline length constraint, this new method can utilize a priori baseline three-dimensional knowledge to fix ambiguity reliably and achieve a high success rate. Experimental tests also verify it is not very sensitive to baseline vector error and can perform robustly when angular error is not great. MDPI 2015-12-02 /pmc/articles/PMC4721695/ /pubmed/26633413 http://dx.doi.org/10.3390/s151229774 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gong, Ang
Zhao, Xiubin
Pang, Chunlei
Duan, Rong
Wang, Yong
GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title_full GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title_fullStr GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title_full_unstemmed GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title_short GNSS Single Frequency, Single Epoch Reliable Attitude Determination Method with Baseline Vector Constraint
title_sort gnss single frequency, single epoch reliable attitude determination method with baseline vector constraint
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721695/
https://www.ncbi.nlm.nih.gov/pubmed/26633413
http://dx.doi.org/10.3390/s151229774
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