학술논문
The Blurred Stars Image Preprocessing Technique of Star Sensor
Document Type
Conference
Author
Source
2012 Symposium on Photonics and Optoelectronics Photonics and Optoelectronics (SOPO), 2012 Symposium on. :1-2 May, 2012
Subject
Language
ISSN
2156-8464
2156-8480
2156-8480
Abstract
When the star sensor with high dynamic rotation, blurred image preprocessing technique of the star sensor is need to discuss in detailed. Firstly, the motion-blurred image model in star sensor is given. Then, applying sub-windows technique to improve the dynamics of the star sensor and dynamic compensation for the area starlight reached, which adopt the inverse process of the generation mechanism of motion-blurred star image to compensate in spatial domain. Secondly, the binaization threshold is confirmed under the constant false alarm condition. Finally the centroid method and improved centroid method are applied to calculate the center of the star, and precision of these methods still exceed 1/10 pixel