Abstract
In order to ensure the accuracy of star sensor in high dynamic conditions, the sectional processing scheme is proposed for space-variant motion blurs. The degradation of star image may be characterized by a space-variant point spread function (PSF), and the PSF of blurred star spot was formulated by its nonuniform velocity across the image plane. Then, the image is divided into several rectangular sections and each contains an interesting star spot. The center of section is the location of star predicted by the attitude measurement equation, and its size is determined by the velocity of star spot and exposure time. Further, the PSF in each section can be approximately space-invariant. The scheme is illustrated by performing attitude determination against a restored space-variant blurred star image.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Fang JC (2006) Spacecraft autonomous celestial navigation principle and method. National Defence Industry Press, People’s Republic of China
Pasetti A, Habinc S, Creasey R (1999) Dynamical binning for high angular rate star tracking. In: Proceedings of the fourth ESA international conference on vehicle guidance, navigation and control systems. Netherlands
Liu CS, Hu LH, Liu GB, Yang B, Li AJ (2015) Kinematic model for the space-variant image motion of star sensors under dynamical conditions. Opt Eng 54(6):063104
Samaan MA, Pollock TC, Junkins JL (2002) Predictive centroiding for star trackers with the effect of image smearing. J Astronaut Sci 50:1–14
Wu XJ, Wang XL (2011) Multiple blur of star spot and the restoration under dynamic conditions. Acta Astronautica 68:1903–1913
Sun T, Xing F, You Z, Wei MS (2013) Motion-blurred star acquisition method of the star tracker under high dynamic conditions. Opt Express 21:20096–20110
Yitzhaky Y, Kopeika NS (1997) Identification of blur parameters from motion blurred images. Graph Models Image Process 59(5):310C320
Fasano G, Rufino G, Accardo D, Grassi M (2013) Satellite angular velocity estimation based on star images and optical flow techniques. Sensors 13:12771–12793
Sawchuk A (1974) Space-variant image restoration by coordinate transformation. J OSA 60(2):138C44
Jin Y, Jiang J, Zhang GJ (2013) Highly dynamic star tracking algorithm. Infrared Laser Eng 42(1):212–217
Crassidis JL (2002) Angular velocity determination directly from star tracker measurements. J Guid Control Dyn 25:1165–1168
Liu HB, Yang JC, Yi WJ, Wang JQ, Yang JK, Li XJ, Tan JC (2012) Angular velocity estimation from measurement vectors of star tracker. Appl Opt 51:3590–3598
Trussell HJ, Hunt BR (1978) Image restoration of space-variant blurs by sectional methods. IEEE Trans ASSP 26(10):608C9
Trussell HJ, Fogel S (1992) Motion blurs in sequential images identification and restoration of spatially variant. IEEE Trans Image Process 1(1):123–126
Hunt BR (1973) The application of constrained least squares estimation to image restoration by digital computer. IEEE Trans Comput C–22:805C812
Acknowledgments
This paper is supported by National Natural Fund of China (NSFC) (No. 41471354).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer International Publishing Switzerland
About this paper
Cite this paper
Liu, T., Sun, K., Liu, C. (2017). Sectioned Restoration of Blurred Star Image with Space-Variant Point Spread. In: Balas, V., Jain, L., Zhao, X. (eds) Information Technology and Intelligent Transportation Systems. Advances in Intelligent Systems and Computing, vol 455. Springer, Cham. https://doi.org/10.1007/978-3-319-38771-0_17
Download citation
DOI: https://doi.org/10.1007/978-3-319-38771-0_17
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-38769-7
Online ISBN: 978-3-319-38771-0
eBook Packages: EngineeringEngineering (R0)