Results 31 to 40 of about 3,201,373 (283)
Identification of Lines in the Spectra of B Stars [PDF]
The Astrophysical Journal, 1934 Identifications of lines in the spectra of B stars are given. About fifty lines for which no previous identifications had been made are interpreted.
Swings, Polydore, Nicolet, M.
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Star-Identification System Based on Polygon Recognition
Aerospace, 2023 Accurate attitude determination is crucial for satellites and spacecraft. Among attitude determination devices, star sensors are the most accurate. Solving the lost-in-space problem is the most critical function of the star sensor.
Gustavo E. Ramos-Alcaraz +2 more
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False Star Filtering for Star Sensor Based on Angular Distance Tracking
IEEE Access, 2019 The reliability of star sensor in a harsh environment has recently become a research hotspot. In some harsh environment such as plume interference, a large number of false stars can be observed, leading to failure in star identification.
Gangyi Wang +3 more
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Star Identification Algorithm Based on Image Normalization and Zernike Moments
IEEE Access, 2020 The star identification (star-ID) algorithm can match the stars captured by an optical system with a star catalog according to certain features. Star-ID has been an important research issue in many astronomical studies and a strong robust star-ID ...
Xiaobo Liang +3 more
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A Star-Identification Algorithm Based on Global Multi-Triangle Voting
Applied Sciences, 2022 A star-identification algorithm aimed at identifying imaged stars in a “lost in space” scene, named the global multi-triangle voting algorithm (GMTV), is presented in this paper. There are two core parts included in the proposed algorithm: in the initial
Xiaobin Yuan +3 more
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Multi-Stage Star Image Identification Method of Three Field-of-View Star Sensor
Xibei Gongye Daxue Xuebao, 2019 To improve the low efficiency and low navigation star identification rate of existing star image identification methods for three field-of-view (FOV) star sensor, a multi-stage star image identification method is proposed.
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Fast Access for Star Catalog Based on Locality-Sensitive Hashing [PDF]
Xibei Gongye Daxue Xuebao, 2018 In order to improve the access speed and robustness of star catalog database during star identification, an algorithm based on locality-sensitive hashing is proposed.
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Optimal orderings of k-subsets for star identification [PDF]
2016 IEEE Symposium Series on Computational Intelligence (SSCI), 2016 Finding the optimal ordering of k-subsets with respect to an objective function is known to be an extremely challenging problem. In this paper we introduce a new objective for this task, rooted in the problem of star identification on spacecrafts: subsets of detected spikes are to be generated in an ordering that minimizes time to detection of a valid ...
Joerg H. Mueller +3 more
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A Robust Method for High-Precision Celestial Positioning of Space Targets
AerospaceThe high-precision celestial positioning of space targets is constrained by star point centroid errors, star identification errors, and residual distortions in wide-field imaging.
Shijie Zhai, Wenhua Cheng, Tinghua Zhang
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source