Satellite Imagery Geo-Positioning Aided by Aerial Imagery
Date Issued
2011
Date
2011
Author(s)
Chang, Ning-Hsuan
Abstract
The 3-D geo-positioning errors of satellite imagery are mainly affected by the quality of exterior orientation parameters, image point measurements and intersection geometry. Among them, pose-related parameters are vital to the geo-positioning accuracy considering the long distance from a satellite to the ground while taking imagery. In general, high quality exterior orientation parameters can be calculated by utilizing a great amount of as well as well distributed control points, or refined by only a few control points if relatively precise exterior orientation parameters are provided. The goal of this research is to investigate how to acquire or to promote high quality exterior orientation parameters of satellite imagery by employing strongly constrained rays coming from aerial imagery. The author consider three forms of constraints, control points, control rays and a hybrid constraint supported by aerial imagery and use rigorous sensor model and rational function model for analyzing object to image correspondence of the satellite imagery. The proposed working scheme is found to be effective and can be only regarded as an alternative when fusing aerial and satellite imagery is applicable.
Subjects
Satellite imagery
Aerial imagery
Geo-positioning
Type
thesis
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