The Study of Precision Image Matching Algorithm For Scene Matching Aided Navigation System
Xuefei Leng · Journal of Astronautics · 2006
The scene matching aided navigation system needs to get both the aircraft position errors and course deviation relative to the preset flight path simultaneously,which are the rotation transformation parameters between the real-time images and refer images.So,the paper applied the least square algorithm to the scene matching aided navigation system for getting the rotation transformation parameter.Since the least square algorithm is only used in point to point pattern,the paper gave the real time algorithm for the relation determination of point to point pattern in images,based on which the least square algorithm has been introduced.So the precision images matching algorithm for scene matching aided navigation system was put forward.The results of simulation show that for 50 to 50 points matching the algorithm costs 0.1 second,and the transformation parameters calculation is correct.So the algorithm in this paper can meet the needs of accuracy and real-time performance in scene matching aided navigation system.