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A monolithic adjusting mechanism for optical element based on modified 6-PSS parallel mechanism
Guo, K.; M. Y. Ni; H. A. Chen and Y. X. Sui
2016
发表期刊Sensors and Actuators a-Physical
卷号251
摘要Ship attitude measurement accuracy based on star sensors is relative to the calibration accuracy of the installation angle between star sensor and ship desk. This paper introduces the coordinate system of the shipboard star sensor and the definition of installation angle. Then, it establishes a model to correct the atmospheric refraction of the sensor and proposes a calibration method for installation angle of the high accuracy shipboard star sensor. When the space TTCship docks in shipyard, shipboard theodolite determines the course of the ship by shooting the azimuth mark, and star sensor obtains the ascension and declination of the stars in the field of view by star recognition to construct the star reference vectors with respect to inertial space. After correction of precession, nutation, pole shift and ship position, the star reference vectors with respect to Inertial Navigation System (INS) horizontal coordinate system are obtained. According to the atmospheric refraction correction model, each star in the field of view corrects its pitch angle and reconstructs its star reference vector with respect to INS horizontal coordinate system. Finally, star sensor installation matrix is calculated based on the principle of attitude determination algorithm, and then three installation angles are solved. Experiment results show that the calibration accuracy of azimuth and pitch using proposed method reach less than 10". The proposed method is based on the higher pointing accuracy of the star sensor and improves automatic programming and measuring accuracy of ship attitudes. 2016, Chinese Academy of Sciences. All right reserved.
文章类型期刊
收录类别SCI ; EI
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/56942
专题中科院长春光机所知识产出
推荐引用方式
GB/T 7714
Guo, K.,M. Y. Ni,H. A. Chen and Y. X. Sui. A monolithic adjusting mechanism for optical element based on modified 6-PSS parallel mechanism[J]. Sensors and Actuators a-Physical,2016,251.
APA Guo, K.,M. Y. Ni,&H. A. Chen and Y. X. Sui.(2016).A monolithic adjusting mechanism for optical element based on modified 6-PSS parallel mechanism.Sensors and Actuators a-Physical,251.
MLA Guo, K.,et al."A monolithic adjusting mechanism for optical element based on modified 6-PSS parallel mechanism".Sensors and Actuators a-Physical 251(2016).
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