Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog
A star tracker is widely used as a high-precision attitude measurement device for spacecraft. It calculates attitude by extracting the magnitude and the position of presumed detected stars by a CCD/CMOS sensor and matching them with stars in the star catalog. The traditional star identification meth...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/9/1553 |
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| author | Siyao Wu Ting Sun Fei Xing Haonan Liu Jiahui Song Shijie Yu |
| author_facet | Siyao Wu Ting Sun Fei Xing Haonan Liu Jiahui Song Shijie Yu |
| author_sort | Siyao Wu |
| collection | DOAJ |
| description | A star tracker is widely used as a high-precision attitude measurement device for spacecraft. It calculates attitude by extracting the magnitude and the position of presumed detected stars by a CCD/CMOS sensor and matching them with stars in the star catalog. The traditional star identification methods typically require the selection of specific anchor stars, which may cause insufficient identification accuracy as the number of stars used in the rough search is limited. In this paper, we propose a star identification method based on spatial projection, which starts with preprocessing. Then, a method for online expansion and reconstruction of the star catalog is proposed, which provides more stored star data. After the rough recognition and coordinate system transformation, the final identification is realized in the polar coordinate system. All the star points in the star image are identified, and the attitude information is obtained at the same time. The performance of the identification method is verified by real night sky experiments. Stray light experiments are also carried out to prove good noise immunity capabilities. Compared with the traditional subgraph isomorphism method, the proposed method makes it easier to adjust the number of recognizable stars in the field of view and better recognition of specific areas. The method is of great significance for future tasks such as attitude measurement, celestial navigation, remote sensing measurement, and space target observation and tracking. |
| format | Article |
| id | doaj-art-b41044571dea4ca2a8af7a3a7d687d3f |
| institution | DOAJ |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-b41044571dea4ca2a8af7a3a7d687d3f2025-08-20T02:59:12ZengMDPI AGRemote Sensing2072-42922025-04-01179155310.3390/rs17091553Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation CatalogSiyao Wu0Ting Sun1Fei Xing2Haonan Liu3Jiahui Song4Shijie Yu5School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, ChinaDepartment of Precision Instrument, Tsinghua University, Beijing 100084, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, ChinaSchool of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, ChinaA star tracker is widely used as a high-precision attitude measurement device for spacecraft. It calculates attitude by extracting the magnitude and the position of presumed detected stars by a CCD/CMOS sensor and matching them with stars in the star catalog. The traditional star identification methods typically require the selection of specific anchor stars, which may cause insufficient identification accuracy as the number of stars used in the rough search is limited. In this paper, we propose a star identification method based on spatial projection, which starts with preprocessing. Then, a method for online expansion and reconstruction of the star catalog is proposed, which provides more stored star data. After the rough recognition and coordinate system transformation, the final identification is realized in the polar coordinate system. All the star points in the star image are identified, and the attitude information is obtained at the same time. The performance of the identification method is verified by real night sky experiments. Stray light experiments are also carried out to prove good noise immunity capabilities. Compared with the traditional subgraph isomorphism method, the proposed method makes it easier to adjust the number of recognizable stars in the field of view and better recognition of specific areas. The method is of great significance for future tasks such as attitude measurement, celestial navigation, remote sensing measurement, and space target observation and tracking.https://www.mdpi.com/2072-4292/17/9/1553star identificationstar image processingspatial projectionreconfigurable navigation catalogcelestial navigation |
| spellingShingle | Siyao Wu Ting Sun Fei Xing Haonan Liu Jiahui Song Shijie Yu Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog Remote Sensing star identification star image processing spatial projection reconfigurable navigation catalog celestial navigation |
| title | Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog |
| title_full | Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog |
| title_fullStr | Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog |
| title_full_unstemmed | Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog |
| title_short | Research on Full-Sky Star Identification Based on Spatial Projection and Reconfigurable Navigation Catalog |
| title_sort | research on full sky star identification based on spatial projection and reconfigurable navigation catalog |
| topic | star identification star image processing spatial projection reconfigurable navigation catalog celestial navigation |
| url | https://www.mdpi.com/2072-4292/17/9/1553 |
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