A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System

Abstract Integrating the advantages of INS (inertial navigation system) and the star sensor, the stellar-inertial navigation system has been used for a wide variety of applications. The star sensor is a high-precision attitude measurement instrument; therefore, determining how to validate its accura...

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Autores principales:	Jiazhen Lu, Chaohua Lei, Yanqiang Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a4ab656066be4893840d01c09f75436a
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spelling	oai:doaj.org-article:a4ab656066be4893840d01c09f75436a2021-12-02T11:52:44ZA Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System10.1038/s41598-017-04061-52045-2322https://doaj.org/article/a4ab656066be4893840d01c09f75436a2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04061-5https://doaj.org/toc/2045-2322Abstract Integrating the advantages of INS (inertial navigation system) and the star sensor, the stellar-inertial navigation system has been used for a wide variety of applications. The star sensor is a high-precision attitude measurement instrument; therefore, determining how to validate its accuracy is critical in guaranteeing its practical precision. The dynamic precision evaluation of the star sensor is more difficult than a static precision evaluation because of dynamic reference values and other impacts. This paper proposes a dynamic precision verification method of star sensor with the aid of inertial navigation device to realize real-time attitude accuracy measurement. Based on the gold-standard reference generated by the star simulator, the altitude and azimuth angle errors of the star sensor are calculated for evaluation criteria. With the goal of diminishing the impacts of factors such as the sensors’ drift and devices, the innovative aspect of this method is to employ static accuracy for comparison. If the dynamic results are as good as the static results, which have accuracy comparable to the single star sensor’s precision, the practical precision of the star sensor is sufficiently high to meet the requirements of the system specification. The experiments demonstrate the feasibility and effectiveness of the proposed method.Jiazhen LuChaohua LeiYanqiang YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiazhen Lu Chaohua Lei Yanqiang Yang A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
description	Abstract Integrating the advantages of INS (inertial navigation system) and the star sensor, the stellar-inertial navigation system has been used for a wide variety of applications. The star sensor is a high-precision attitude measurement instrument; therefore, determining how to validate its accuracy is critical in guaranteeing its practical precision. The dynamic precision evaluation of the star sensor is more difficult than a static precision evaluation because of dynamic reference values and other impacts. This paper proposes a dynamic precision verification method of star sensor with the aid of inertial navigation device to realize real-time attitude accuracy measurement. Based on the gold-standard reference generated by the star simulator, the altitude and azimuth angle errors of the star sensor are calculated for evaluation criteria. With the goal of diminishing the impacts of factors such as the sensors’ drift and devices, the innovative aspect of this method is to employ static accuracy for comparison. If the dynamic results are as good as the static results, which have accuracy comparable to the single star sensor’s precision, the practical precision of the star sensor is sufficiently high to meet the requirements of the system specification. The experiments demonstrate the feasibility and effectiveness of the proposed method.
format	article
author	Jiazhen Lu Chaohua Lei Yanqiang Yang
author_facet	Jiazhen Lu Chaohua Lei Yanqiang Yang
author_sort	Jiazhen Lu
title	A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
title_short	A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
title_full	A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
title_fullStr	A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
title_full_unstemmed	A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System
title_sort	dynamic precision evaluation method for the star sensor in the stellar-inertial navigation system
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a4ab656066be4893840d01c09f75436a
work_keys_str_mv	AT jiazhenlu adynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem AT chaohualei adynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem AT yanqiangyang adynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem AT jiazhenlu dynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem AT chaohualei dynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem AT yanqiangyang dynamicprecisionevaluationmethodforthestarsensorinthestellarinertialnavigationsystem
_version_	1718394943424167936

A Dynamic Precision Evaluation Method for the Star Sensor in the Stellar-Inertial Navigation System

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