Paper
8 March 2017 An INS data based approach to star image simulation for ship-borne star sensor
Cong Sun, Hai-bo Liu, Xiao-hu Zhang, Qi-feng Yu
Author Affiliations +
Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 102552J (2017) https://doi.org/10.1117/12.2261818
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China
Abstract
The technique of the star image simulation is widely used to test star identification algorithms and the performance of star sensor on the ground. A novel INS data based approach to ship-borne star map simulation is put forward in this paper. The simulation procedure consists of three steps: Firstly, the exact speed and position of the ship in the Conventional Inertial System(CIS) are calculated via the INS data; and then the ship attitude matrix is obtained. Secondly, considering the azimuth angle and elevation angle of the star sensor, the accurate positions of the selected guide stars on the image plane of the star sensor are derived by constructing a pinhole model. At the third, the gray values of simulating star image pixels are evaluated according to the 2D Gaussian distribution law. In order to simulate the star image precisely and actually, the image smear has been considered. Based on the proposed star image simulation approach, the effects of image smear on star sensor recognition capability have been analyzed in different exposure time.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cong Sun, Hai-bo Liu, Xiao-hu Zhang, and Qi-feng Yu "An INS data based approach to star image simulation for ship-borne star sensor", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102552J (8 March 2017); https://doi.org/10.1117/12.2261818
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Stars

Star sensors

Image sensors

Computer simulations

Image processing

Imaging systems

Point spread functions

Back to Top