2019
DOI: 10.1109/taes.2018.2845198
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A Hamming Distance and Spearman Correlation Based Star Identification Algorithm

Abstract: This paper presents a novel star identification algorithm for a "Lost-In-Space" mode star tracker. The spearman correlation approach provides reliable recognition even when the captured images are swayed and biased from the onboard star pattern database. The hamming distance approach provides a shortlisted list of star IDs. Thus, the proposed combination of hamming distance and spearman correlation provides a reliable and fast recognition. The achievable performance is evaluated by testing on simulated and rea… Show more

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Cited by 22 publications
(6 citation statements)
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“…K-L transform is used in [42] for rough matching, and a star walk step is performed to identify stars. [32] combines the hamming distance and Spearman correlation, increasing the identification efficiency. [20] uses image normalization and the Zernike moment to extract more invariant pattern features.…”
Section: Motivation and Related Workmentioning
confidence: 99%
“…K-L transform is used in [42] for rough matching, and a star walk step is performed to identify stars. [32] combines the hamming distance and Spearman correlation, increasing the identification efficiency. [20] uses image normalization and the Zernike moment to extract more invariant pattern features.…”
Section: Motivation and Related Workmentioning
confidence: 99%
“…The distance between two binary strings is the total amount of different bits at the same position [45]. We select Hamming Distance for our system based on its good performance application for recognition as well as for decoding application where similarity is used as the primary measurement for the system or method performance [46], [47], [48], [49].…”
Section: Hamming Distancementioning
confidence: 99%
“…Geometric approaches use geometric features such as triangles of stars to estimate the parameters [1,[10][11][12]. Pattern-based approaches use a pattern code based on the positions of neighboring stars in the image [13][14][15][16][17][18]. However, these methods are not fully blind because they use cameras specifically designed for the spacecraft.…”
Section: Related Workmentioning
confidence: 99%