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Ellipticity pivot star method for autonomous star identification
Optik, 2017Abstract A new fast algorithm for autonomous star identification in the general lost-in-space case is developed based on optimized catalog. The proposed method takes advantage of singular value decomposition method and the accuracy angular separation information.
Zhipan Sun +3 more
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Research on parallel processing for star acquirement and star identification
SPIE Proceedings, 2009Star acquirement and star identification are the key technologies of star sensor, and decide the performance of star sensor. Current research usually neglects the inner relationship between star acquirement and star identification, so the research on the parallel processing of both sides is not enough deep for star sensor development, and this ...
Guohui Zhou, Linyang Sheng
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Research on Star Identification Algorithm
2020 IEEE 9th Joint International Information Technology and Artificial Intelligence Conference (ITAIC), 2020In view of the traditional star identification method requires large storage space, real-time recognition algorithm is bad, and the problem of common recognition rate is not high, this paper adopts spherical triangle geometry application, basic angular distance processing methods, such as spherical triangle model was established, the star sensor ...
Yutong Jia +3 more
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Optical Correlator for Star Identification and Tracking
2009Star tracker is one of the most important spacecraft attitude sensors which can achieve accuracies within several arc-seconds utilizing star identification and star tracking. The refresh rate and accuracy of star tracker are constrained as there are so many stars in the sky. A novel star identification and tracking method for star tracker using optical
Hui Jia +6 more
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The Pyramid Star Identification Technique
Navigation, 2004: A new highly robust algorithm, called Pyramid, is presented to identify the stars observed by star trackers in the general lost-in-space case, where no a priori estimate of pointing is available. At the heart of the method is the k-vector approach for accessing the star catalog, which provides a searchless means to obtain all cataloged stars from the
DANIELE MORTARI +3 more
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A Star Identification Algorithm Based on Geometric Verification
Proceedings of the 2020 2nd International Conference on Robotics, Intelligent Control and Artificial Intelligence, 2020A novel star identification algorithm based on geometric verification is presented in this paper to solve Lost-In-Space problem. Supposing the query star map matches with one in star pattern database and then verify its similarity is the main idea. The similarity is described by the proportion of correctly matched stars, which largely eliminates the ...
Yujie Fang, Jie Jiang 0017, Yin Zou
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An artificial intelligence enhanced star identification algorithm
Frontiers of Information Technology & Electronic Engineering, 2020An artificial intelligence enhanced star identification algorithm is proposed for star trackers in lost-in-space mode. A convolutional neural network model based on Vgg16 is used in the artificial intelligence algorithm to classify star images. The training dataset is constructed to achieve the networks’ optimal performance.
Hao Wang 0084 +5 more
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Star Identification Utilizing Star Patterns
2016Traditionally, most star identification algorithms are based on the characteristics of angular distance, such as polygon match algorithms, triangle algorithms and group match algorithms. Though they are easy to use, these algorithms require a relatively large storage capacity because their matching features are line segments (angular distances) or ...
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An onboard star identification algorithm
Guidance, Navigation and Control Conference, 1993The paper presents the autonomous Initial Stellar Acquisition (ISA) algorithm developed for the X-Ray Timing Explorer for prividing the attitude quaternion within the desired accuracy, based on the one-axis attitude knowledge (through the use of the Digital Sun Sensor, CCD Star Trackers, and the onboard star catalog, OSC).
KONG HA, MICHAEL FEMIANO
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A star identification algorithm based on simplest general subgraph
Acta Astronautica, 2021Jian Li, Xinguo Wei, Gangyi Wang
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