On-orbit calibration of stellar camera considering distribution of star image points
Xie Junfeng1, Jiang Wanshou2, Gong Jianya2*
1. The Satellite Mapping Application Center, State Bureau of Surveying and Mapping, Beijing 100830, China;
2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
Although the parameters of the stellar camera are accurate by the ground calibration in advance, they will change due to the intense vibration in the process of the satellite launch or the change of space environmental factors such as the temperature, the atmospheric pressure, etc. The on-orbit calibration method based on the spatial resection with multi-images was applied to the stellar camera. The percentage of the convex hull area out of the star image was employed to choose the stellar image with good distribution since the calibration accuracy is related to the distribution of the star image points. The experiment result indicates that the calibration accuracy based on the selected images is better than that based on all the stellar images.
Xie Junfeng, Jiang Wanshou, Gong Jianya.On-orbit calibration of stellar camera considering distribution of star image points[J] JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(10): 1271-1276