Relative pose determination for GEO non-cooperative spacecraft under the ultra-close distance

In this work, the binocular vision determination strategy based on image matching is developed for non-cooperative spacecraft final approach and capture. The measurement target is rectangular solar panel of failure spacecraft. Firstly, a comprehensive feature point matching method is proposed to improve the matching accuracy. Secondly, by use of the feature point extraction method based on geometric index threshold and ROI detection, the feature points of solar panel can be identified, then a target coordinate system is established based on the rectangular configuration; on the basis, the relative pose determination algorithm in ultra-close distance is developed. Finally, the ground-based binocular vision system with high accuracy is established to complete the dynamic relative position and attitude measurement for non-cooperative target. The simulation results demonstrate the relative pose determination method with real-time performance and high accuracy.